98 Zoological Society : — 



red ; foot, when contracted, folded together transversely behind and 

 longitudinally in front ; tentacles small, compressed, subulate, united 

 together at the base, forming a small veil ; eyes on the outer side, 

 rather above the base, with a conical tentacle only slightly produced 

 above the eyes ; proboscis very long, slender, entirely retractile ; lingual 

 membrane very long, slender, with three longitudinal series of teeth in 

 cross lines, 1 * 1 * 1, the central teeth narrow, square, with three small, 

 subequal, acute denticulations, the central one rather the longest ; 

 the lateral teeth very broad, slightly arched, and more arched at the 

 outer end, with a series of twenty-five or thirty equal, regular, 

 elongate, subulate teeth, somewhat like the teeth of a coarse hair- 

 comb ; the central teeth are opposite the space between the lateral 

 teeth, that is, alternating with them. Male organ elongate, subcylin- 

 drical, compressed, of the same diameter the whole length, rounded 

 at the end with a slight groove on its outer edges, which is not con- 

 tinued up the body as in Malea, 



Leucozonia angulata. 



Animal red ; the foot, when contracted, folded up across behind, 

 and longitudinally in front, leaving a j^-shaped groove ; tentacles 

 close together at their base, diverging, flat, with the eyes on the 

 outer side rather below the tip, which is narrower and acute ; pro- 

 boscis completely retractile, clavate ; lingual membrane elongate, 

 rather narrow ; teeth in three longitudinal series, the central series 

 rather narrower than the lateral ones, square, with a rather arched 

 anterior edge, with elongate, conical, acute denticulations, the central 

 denticulation being the largest and longest; the lateral teeth bandlike, 

 rather oblique, front edge with several distinct, conical, acute den- 

 ticulations, the one at the edge of the inner margins near the central 

 tooth being much the largest and longest ; operculum ovate, acute, 

 thick J nucleus apical. 



C. Tjenioglossa. 



Fam. DoLiiDiE. 



The proboscis of this family is very long, large, and more or less 

 dilated, with an open rather trumpet-like mouth at the end. 



Malea ringens. 



Animal like Bolium. Lingual membrane narrow, elongate, wider 

 in front ; teeth in seven longitudinal series, dark red, in each cross 

 series, 3 • 1 * 3 ; the central teeth broad, lunate, thin, with a central 

 recurved apex, and sometimes a small denticle for each side, halfway 

 between the tooth and the end ; the lateral teeth subulate, curved, 

 acute at the top ; cervical collar of two ovate, horny plates, covered 

 with crowded converging subulate teeth; foot short, truncated in 

 front, rounded behind ; proboscis cylindrical, large, retractile into a 

 sheath under the tentacular veil ; mouth open at the end ; tentacles 

 subulate ; eyes on short tubercles at the outer hinder side. Male 

 organ very large, compressed, with marginal groove on the outer side, 

 continued up the right side of the body by the side of the rectum. 



