150 DOLABELLINZ. 
brown. These, like those described by Prof. Ray Lankester in 
Aplysia, are, no doubt, for crushing the food. Posteriorly to the 
gizzard the gut is gray and rather broad, winding around the large 
brown liver. The genitalia are somewhat ordinary, but rather curi- 
ous for their bright color, which suggests the specific name I have 
adopted. The albuminiparous gland and hermaphrodite duct are 
pale ochreous yellow, as is usual, but the gland has on one surface 
a large elongated patch of bright red, which does not remain well 
in alcohol. The ovotestis is large and irregularly globular, yellow- 
green in color, with two blackish broad sulci. <A strong ligament 
has its origin on the ovotestis, close to the beginning of the her- 
maphrodite duct. 
Subfamily DoLaBEeLLInz Pilsbry. 
Aplysiids in which the pleuropodial lobes are scarcely mobile, or 
separable, united behind enclosing a large gill chamber ; their for- 
ward insertions contiguous, parted by the genital groove only; the 
dorsal slit short. Genital orifice under the posterior part of gill. 
Radula with the rhachidian tooth reduced to a narrow, cuspless 
vestige, side teeth excessively numerous, narrow, with long simple 
cusps. 
Shell well-developed, calcareous, and posterior area of body de- 
fined by a groove and ridge in Dolabella, the only genus known. 
This subfamily stands conspicuously apart from other Aplysiide 
in the posterior position of the genital foramen, and the peculiar 
dentition. 
A group of teeth from the median part of the radula of D. cali- 
fornica Stearns is drawn in fig. 17 of pl}. 67, showing two rhachidian 
with several adjacent lateral teeth. The cusps of the laterals be- 
come longer further from the middle of the radula, as in fig. 18, 
profile view of a lateral from middle of one side. On the outer 
edges of the membrane the teeth are smaller, but of the same form. 
The place-relations of pleuropodial lobes, gill, genital pore, ete., 
are shown in the diagram, pl. 66, fig. 14 (D. californica). 
Genus VII. DOLABELLA Lamarck, 1801. 
Dolabella Lam., Syst. Anim. sans Vert., p. 62 (1801) type D. 
callosa Lam.=scapula Mart.—Aplysia Rana, et al. 
General form conic, wide behind, narrower in front. Integument 
more or less warty. Head bearing in front a pair of subcylindric 
