OPISTHOBRANCHIATE MOLLUSCA FROM MONTEREY BAY. 113 



Order OPISTHOBRA^rCHIATA— Continued. 

 Suborder NlIDIBRA^-CHIATA — Continued. 

 Section Doridoidea — Continued. 

 Family B. Doriopsidid.e. 



10. Doriopsis fulva MacFarland. 

 Family C. Phyllidiid.e. 



Family D. Polycerid.e. ■ 



Subfamily XI. Polycerin;e. 



11. Aegires albopunctatus MacFarland. 



12. Laila cockerelli MacFarland. 



13. Triopha carpenteri (Stearns). 



14. Triopha maculata MacFarland. 



15. Triopha grandis MacFarland. 



16. Polycera atra MacFarland. 

 Subfamily XII. (^oniodoridin;*'. 



17. Acanthodoris hudsoni MacFarland. 

 IS. Acaiithodciris brunnea MacFarland. 



19. Ancula ]xacifica MacFarland. 



20. Hopkinsia rosacea MacFarland. 

 Family E. Corambid.e. 



Family F. Doridoxid.i!. 



0PI8TH0BRANCHIATA. 

 NUDIBRANCHIATA. 



DORIDOIDEA. 



Genital conduit triaulic, liver completely inclosed in the visceral mass, female duct bifurcated. 

 Anal aperture postero-median, upon the dorsum, surrounded by the branchial rosette, or rarely 

 between the peri-notwum and the foot. 



Family A. DORIDID.B. 



Branchial plumes in an arc or circle usually joined together at their bases, usually retractile into 

 a common cavity. Rhinophores always with perfoliate clavus. Pharyngeal bulb never suctorial. 



Subfamily I. BATHYDORIDINH. 



Body (large) almost semiglobular, soft, pallial margin scarcely any; tentacles rather large, some- 

 what flattened, acuminate; branchial plumes many (6), entirely separate, nonretractile; the foot 

 wide. Pharyngeal bulb very large, similar to that of the Tritoniadie; labial armature none; mandibles 

 large, flattened, masticatory margin smooth. Median tooth of radula somewhat compressed; lateral 

 teeth numerous, hooked, edentulate. Hermaphrodite gland sejiarate from the liver; j)enis unarme<l. 



Subfamily II. HEXABRANOHINII. 



Body (large) soft, f.attened, elongate oval; dorsum smooth; pallial margin wide, undulating, its 

 margin thin, undulating; tentacles large, foliaceous, their margins fluted; branchiae of many (6-8) 

 separate arborescent plumes, retractile into separate cavities; the foot wide. Labial armature very 

 strong, on each side a thick lamella made up of very minute hooks. Rhachis of radula naked; lateral 

 teeth numerous, hooked, edentulate. Penis very long, unarmed. 



Subfamily III. AEOHIDORIDINll. 



Body not hard, somewhat depressed, the dorsum tuben-uUite or granulate, j)allial margin not 

 narrow; tentacles small; branchial plumes almost always tripinnate or quadripinnate; the foot wide. 

 Laliial armature none. Rhachis of radula naked; pleurie multidentate, teeth hooked. Penis usually 

 unarmed. 



B. B. F. 1305—8 



