150 DOLABELLIN^E. 



brown. These, like those described by Prof. Ray Lankester m 

 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 DOLABELLIN.E Pilsbry. 



Aplysiidse 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 Aplysiidce 

 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 pi. 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, etc.,, 

 are shown in the diagram, pi. 66, fig. 14 (D. calif ornica) . 



Genus VII. DOLABELLA Lamarck, 1801. 



Dolabella LAM., Syst. Anim. sans Vert., p. 62 (1801) type D. 

 callosa L,8im.=scapula Mart. Aplysia RANG, et al. 



General form conic, wide behind, narrower in front. Integument 

 more or less warty. Head bearing in front a pair of subcylindric 



