Definition.—Galear bows simple, thoracal bows forked.
5. Toxarium cordatum, n. sp. (Pl. [93], fig. 19).
Galear bows simple, thoracal bows forked, both somewhat smaller than frontal bows; all bows armed with scattered simple conical spines, mostly developed at the thoracal bows. Both galear bows are united in a central vertical columella, which arises from the apex of the sagittal ring, and is prolonged into an apical horn. Therefore the sagittal constriction exists only in the basal half of the inversely cordate shell.
Dimensions.—Length of the shell 0.18, breadth 0.16.
Habitat.—South Atlantic, Station 348, depth 2450 fathoms.
6. Toxarium furcatum, n. sp.
Galear bows simple, thoracal bows forked, both somewhat broader than the frontal bows. Shell therefore slightly constricted in the equatorial plane. Sagittal constriction rather deep, equal in the apical and basal parts. All bows armed with scattered spines, which are partly simple, partly forked.
Dimensions.—Length of the shell 0.14, breadth 0.16.
Habitat.—Central Pacific, Station 270, depth 2925 fathoms.
7. Toxarium pedatum, n. sp.