1(32 



Rudolph Bergh. 



Corpus lim aci forme, fere laeve, limbo frontali angusto, laevi vel 

 tuberculato; rhinophoria vaginis obliquis fortiter prominentibus retrac- 

 tilia, clavo perföliato; branchia paucifoiiata, foliolis tripinnatis, in quoque 

 latere dorsi appendix lobiformis extrabranchialis singula vel appen- 

 dices complures, tuber culiformes; tentacula vix ulla. Margo anterior podarii 

 angulis productis. 



Lamellae rnandibulares fere ut in Polyceris (propriis). Radula 

 non lata; rhachis nuda; pleuris non multidentatis, dentibus lateralibus majo- 

 ribas duobus inaequalibus et dentibus externis compluribus. 



Glans penis? 



1. T7i. pemiigera (Mtg.). 



Hab. M. atlant. 



2. — virescens Aid. et Hanc. 



Hab. M. atlant. 



3. — capitata Aid. et Hanc. 



Hab. M. atlant. 



4. — sp. (Darwin). 1 ) 



Hab. M. pacific. (Chomos-Archipel). 



9. JPoly Cerella Verrill. 



Vgl. A. E. Verrill, Notice of recent addit. to the marine invertebr. of the 

 northeastern coast of America, part II. Proc. of Un. St. Nat. Mus. III, 

 1881, p. 386—388. 

 — Catal. of marine Moll. Transact. of the Connecticut. Ac. V, 2, 1882, 

 p. 548. 



Forma corporis fere ut in Polyceris, sed dorsum papillig er um; 

 rhinophoria non retractilia, clavo simplici; branchia paucifoiiata, 

 foliolis simpliciter pinnatis; tentacula vix ulla; margo anterior podarii an- 

 gulis productis. 



Lamellae mandibulares fere ut in Polyceris. Radula angusta; rhachis 

 nuda; pleurae tridentatae, dente laterali majori et dentibus externis (duofais) 

 simplicibus, hamatis. 



Glans penis armata. 



/'. Emertoni Verrill. 



Hab. M. atlant. (occid.). 



10. ratio Gray. 



Vgl. Ii. Bergb, Beitr. zur Kenutn. d. Polyceraden I, 1. c. p. 601. 

 Corpus limaciforme, fere laeve; limbo frontali tuberculato; rhinophoria 

 vix omnino retractilia, clavo perföliato; branchia paucifoiiata, foliolis 



') V«l. AI der und Hancock, 1. C. part VI, IHM, Farn. l,(ien. b. — Ferner aind noch zwei 

 von M o<| u i n - Taiidon (A. Prtdol, Lo mond« de la moi, 1K<J4, pl. XII, Fig. 8-4) dargestellte 

 „PoljCttrtD* wahrst heinlirli Tliccaceren. 



