150 DOLABELLIN^E. 



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

 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 DOL A BELLING 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. 

 Kadula 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 (Z>. calif ornica). 



Genus VII. DOLABELLA Lamarck, 1801. 



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

 callosa Ija,m.=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 subcylindrie 



