46 CLASSIFICATION. 



into a pair of horn-like pouches. One pair seminal receptacles. No copulatory 

 spines. Gills absent. Type of genus 

 D. pacifica, sp. nov. 



With characters of the genus. Japan, (p. 93.) 



Dorymenia, gen. nov. 



Vermiform, body terminating posteriorly in a finger-shaped elongation. 

 Radula polystichous, with 48-51 longitudinal rows of 22 teeth each. One pair 

 of seminal receptacles. A pair of long copulation spicules closely associated 

 with a pair of globular coeca likewise opening separately' into the cloaca. Type 

 of genus 

 D. acuta, sp. nov. 



With the characters of the genus. California, (p. 95.) 



Strophomenia Pruvot, 1899. 



Body elongated, cylindrical, the thick cuticle penetrated by acicular spicules 

 and closely crowded vesicular papillae; radula and salivary ducts, caudal sense 

 organ sometimes absent (?) ; two distinct genital openings into the cloaca. 

 Type of genus, S. lacazei. 

 S. farcimen, sp. nov. 



Length 18 by 2 mm. Papillae smal , closelj' crowded. Radula with 15 

 transverse rows of 24-28 teeth. 19 seminal receptacles. Japan, (p. 119.) 

 S. ophidiana, sp. nov. 



Length 43 by 2.5 mm. Papillae fairly numerous. No radula. 23 small 

 seminal receptacles. Japan, (p. 112.) 

 S. regularis, sp. nov. 



Anterior end missing. Papillae small, closely crowded. 12 seminal recep- 

 tacles. Japan, (p. 116.) 

 S. scandens, sp. nov. 



Length 32-39 by 1.6-2.1 mm. diamter. Papillae crowded. No radula. 

 15-18 seminal receptacles. Hawaii, (p. 106.) 

 S. spinosa, sp. nov. 



Length 28 by 1 mm. Papillae few. Radula small, monoserial or biserial 

 with 8 transverse rows. 12-31 seminal receptacles. Japan, (p. 122.) 

 S. iriangularis, sp. nov. 



Length 12 mm. by 1.6 mm. diameter. Triangular in cross section. Radula 



