Subfamily 1. Lamprospyrida, Haeckel.
Definition.—Androspyrida with three free basal feet (an odd posterior caudal foot and two paired anterior pectoral feet).
Genus 479. Androspyris,[[97]] n. gen.
Definition.—Androspyrida with three free basal feet and a simple apical horn; lattice-work of the three-jointed shell simple, not spongy.
The genus Androspyris is probably the most original form of the Androspyrida, and represents, together with the following Lamprospyris, the subfamily of Lamprospyrida, which always possess three free basal feet, an odd posterior or caudal foot, and two paired anterior or pectoral feet. It may be derived either from Acrospyris by development of a cupola, or from Tholospyris by development of a thorax; the common ancestral form of these three typical genera is, no doubt, Tripospyris. Some species of Androspyris reach a considerable size and are distinguished by a peculiar external form resembling somewhat a human figure.
1. Androspyris homunculus, n. sp.
Shell thorny, with two deep transverse constrictions and irregular polygonal pores. Galea subspherical, with a strong pyramidal oblique horn, about two-thirds as large as the cephalis, which has the form of a human thorax, includes a strong ovate sagittal ring, and bears on each side a stronger lateral spine. Thorax short and broad, prolonged into three latticed divergent feet; the two lateral (pectoral) feet are like the legs of a human body, and are twice as long as the cephalis and as the tail-like caudal feet. (The whole shell exhibits a curious similarity to a human figure, more than in the following nearly allied species.)
Dimensions.—Length of the shell (including horn and feet) 0.4, breadth 0.1 to 0.15.
Habitat.—Central Pacific, Station 273, depth 2350 fathoms.
2. Androspyris anthropiscus, n. sp. (Pl. [83], fig. 8).