1. Humeral (Humeralis). Basal angle next the head. Plate [XIV]. Fig. 1. d.

2. Scutellar (Scutellaris). Basal angle next the scutellum or its region. Plate [XIV]. Fig. 1. e.

3. Posterior (Posterior). Outer apical angle. Plate [XIV]. Fig. 1. f.

4. Anal (Analis). Inner apical angle. Plate [XIV]. Fig. 1. g.

H. Nervures.

1. Nervulet (Nervulus). A little nervure diverging obliquely from the costal into the disk of the wing towards the apex.

a. Simple (Simplex). When the nervulet does not terminate in a round punctum.—Ex. Eulophus.

b. Coronate (Coronatum). When it terminates in a round punctum.—Ex. Ichneumon penetrans[1108].

2. Neurose (Neurosæ). Wings that have nervures besides the marginal ones.

3. Aneurose (Aneurosæ). Wings that have no nervures besides the marginal ones.—Ex. Psilus.

4. Circumsepted (Circumseptæ). Wings whose margin is every where strengthened by a nervure.—Ex. Tabanus.

5. Varicose (Varicosæ). When the nervures are disproportionably swelled in any part.—Ex. Forficula auricularia. Plate [X]. Fig. 5.

6. Serpentine (Serpentinæ). Nervures that run in a serpentine direction.—Ex. Strategus Aloeus K. M.S[1109]. Plate [X]. Fig. 4.

7. Insulate (Insulatæ). Discoidal nervures that are entirely unconnected with any others, or with the base of the wing.—Ex. Strategus Aloeus. Plate [X]. Fig. 4. a, b.

8. Uncinate (Unicinatæ). Nervures, that after running from the base towards the apex, turn back, and running a little towards the base, form a hook.—Ex. Strategus Aloeus. Plate [X]. Fig. 4. i..

9. Recurrent (Recurrentes). When a nervure, or a branch of it, after running towards the apex of the wing, turns back and runs towards the base.—Ex. Strategus Aloeus, &c. Plate [X]. Fig 4. l..

10. Connecting (Connectentes). Nervures that running transversely or obliquely connect the longitudinal ones, and so form the areolets.

I. Areolets.

1. Radiated (Radiatæ). When the areolets are chiefly formed by radiating longitudinal nervures.—Ex. Forficula, Psychoda. Plate [X]. Fig. 5, 13.

2. Areate (Areatæ). Radiated with a large basal area.—Ex. Papilio and many other Lepidoptera[1110]. Plate [X]. Fig. 6.

3. Areolate (Areolatæ). When the surface of the wing is divided into various areolets.—Ex. Diptera, Hymenoptera, and most Neuroptera. Plate [X]. Fig. 7-14.

4. Reticulate (Reticulatæ). When the areolets are extremely small and infinitely numerous.—Ex. Libellulina. Plate [III]. Fig. 5.

5. Open (Apertæ). Areolets that terminate in the margin of the wing, or that are not surrounded on all sides by nervures.

a. Marginal (Marginales). Open areolets that terminate in the margin.—Ex. Tenthredo. Plate [X]. Fig. 8.

b. Incomplete (Incompletæ). Open areolets that terminate short of the margin.—Ex. Apis.

6. Radiant (Radiantes). When a small roundish areolet is a centre from which several long ones diverge.—Ex. Stratyomis. Plate [X]. Fig. 15.

7. Petiolate (Petiolatæ). When an areolet is connected with another by a stem like a footstalk[1111]. Plate [X]. Fig. 8.

8. Ramulose (Ramulosæ). When an areolet sends forth a little unconnected branch.—Ex. Pompilus, Sphex, &c.[1112]

9. Angular (Angulatæ). When an areolet juts out on one side into an angle from which no nervure proceeds, to form another areolet.—Ex. Eristalis, Cerceris.[1113] Plate [X]. Fig. 14.

10. Didymous (Didymæ). When areolets are nearly divided into two by a nervure.—Ex. Gyrostoma.

11. Sesquialterous (Sesquialteræ). When a minute areolet is appended to a large one.—Ex. Postcostal areolet of Hylotoma[1114].

* Areolets of the Costal Area.

1. Costal (Costales). Areolets, one or more, below the stigma. Plate [X]. Fig. 14. 15. a, b.

2. Postcostal (Postcostales). Areolets, one or more, above the stigma. Plate [X]. Fig. 8, 9. a, b.

* * Areolets of the Intermediate Area.

1. Protomesal (Protomesæ). First series of the middle areolets (Areolæ mediæ), often consisting of three, and then divided into upper, middle, and lower, areolets. Plate [X]. Fig. 8, 9. a.

2. Deuteromesal (Deuteromesæ). Second series of the same, often consisting of two, and then divided into upper and lower. Ibid. b.

3. Tritomesal (Tritomesæ). Third series of the same. Ibid. c.