[8.] Male of [Ibla Cumingii], Maxillæ, with the apodeme.

[9.] Complemental Male of [Scalpellum vulgare], attached over the fold in the occludent margin of the scutum of the hermaphrodite.

(a.) Orifice of the sack of the male.

(b.) Spinose projections above the rudimental valves; at the bottom of the figure are represented, as seen through the whole thickness of the animal, the prehensile larval antennæ.

(d.) The depression for the attachment of the adductor scutorum muscle of the hermaphrodite; see fig. 15 a´.

(e, e.) A transparent layer of chitine, which forms a border to the occludent margin of the scutum of the hermaphrodite. This border supports long spines, which are connected with the underlying corium by sinuous tubuli.

[10.] The basal (normally anterior) portion of the above complemental Male, greatly magnified, viewed dorsally from above, exhibiting the larval prehensile antennæ, attached to the antero-sternal surface of the animal.

[11.] One of the antennæ of ditto, viewed laterally and on the outside.

[12.] Ditto, ultimate segment of.

[13.] Body of the above complemental male, consisting of the thorax supporting the four pairs of limbs, and of the terminal abdominal lobe.