368 BULLETIN OF THE MUSEUM OF COMPARATI^'^: ZOOLOGY, 



New Hebrides, etc. 



For figure of animal, shell-plate, jaw, and lingiial dentition, see Fischer, 

 Journ. de Conch., 186S, XVI. 230, PI. XI. 

 The animal has peculiar dorsal grooves. 



DOUBTFUL GENERA. 



Parmella, H. & A. Adams. (Proc. Zool. Soc, 1867, 308, PI. XIX. Fig. 20.) 

 Fejee Islands. No information whatever given of the animal. Shell sigareti- 

 form, as in Gceotis, Pehella, and Mariella. 



Othelosoma, Gray. (Ann. Mag. Nat. Hist., New Series, III. 241.) 

 Gaboon. No exact description given. 



Damayantia, IssEL. (Ann. Mus. Genov., VL, 1874, PI. IV.' Fig. 4-6 and 

 woodcut.) No shell ; mantle anterior ; caudal pore. Borneo. I have not 

 seen this description. 



Aspidiporus, FiTZ. (1833, Verz., 90.) Vienna. Like Limax, with per- 

 forated mantle. 



Laconia, Gray. (Brit. Mus. Cat., 63.) Sublimaciform. Founded on 

 Ferussac's Fig. 10, 11, of PI. VIII. F. Shell of Vitrina, with large caudal pore. 

 Shell concealed by mantle : rather heliciform. 



Oris, Risso. Syn. of Oncliid'mm ? 



Limacellus, Blainv. See Fer. Hist., p. 52, PI. VII. Fig. 1, for full de- 

 scription and figure. 



Parmula and Scutelligera are larvae of insects. See Gray, Br. Mus. Cat., 

 161. 

 Eumelus, Deroceras, Zilotea, Urcinella, Testacina, Limacias, Rafi- 



NESQUE. (See Terr. Moll., V., and Binney and Tryon's edition of Eufinesque.) 



Plectrophorus, Bosc. See Ferussac, Hist, p. 84, PL VI. Fig. 5-7. 



Phosphorax. Webb & Berth. Animal limaciform, swollen at middle : 

 tentacles simple : mantle large, anterior, witli a posterior, small, phosphorescent 

 disk, and concealing a shell-plate : no longitudinal furrows above the margin 

 of the foot, and no caudal mucus pore shown in plate: distinct locomotive disk ? 

 external anal and respiratory orifices on right anterior margin of mantle: gener- 

 ative orifice ? Internal shell-plate thick, oval, testaceous. Jaw ? Lingual 

 membrane ? Teneriffe. For figure of animal, see Ferussac, Hist., PI. II. Fig. 8. 

 A doubtful genus, so little do we know of it. It is impossible to ascertain its 

 systematic position. 



A new genus of elasmognathous slug is indicated, but not named, in Zodl. 

 Rec, 1877, p. 74, founded on Parmarion Kersteni. 



