368 BULLETIN OF THE MUSEUM OF COMPARATIVE ZOOLOGY. 
New Hebrides, etc. 
For figure of animal, shell-plate, jaw, and lingual dentition, see Fischer, 
Journ. de Conch., 1868, XVI. 230, Pl. XI. 
The animal has peculiar dorsal grooves. 
DOUBTFUL GENERA. 
Parmella, H. & A. ApAws. (Proc. Zoól. Soc., 1867, 308, Pl. XIX. Fig. 20.) 
Fejee Islands. No information whatever given of the animal. Shell sigareti- 
form, as in G«otis, Peltella, and Mariella. 
Othelosoma, Gray. (Ann. Mag. Nat. Hist, New Series, III. 241.) 
Gaboon. No exact description given. 
Damayantia, IsseL. (Ann. Mus. Genov., VI., 1874, Pl. IV. Fig. 4-6 and 
woodcut.) No shell; mantle anterior ; caudal pore. Borneo. I have not 
8een this description. 
Aspidiporus, Fitz. (1833, Verz, 90.) Vienna. Like Limax, with per- 
forated mantle. 
Laconia, Gray. (Brit. Mus. Cat, 63.) Sublimaciform. Founded on 
Férussac’s Fig. 10, 11, of Pl. VIII. F. Shell of Vitrina, with large caudal pore. 
Shell concealed by mantle : rather heliciform. 
Oris, Risso. Syn. of Onchidium ? 
Limacellus, Buainv. See Fér. Hist, p. 52, Pl. VII. Fig. 1, for full de- 
scription and figure. 
Parmula and Scutelligera are larve of insects, See Gray, Br. Mus. Cat., 
101۰ 
Eumelus, Deroceras, Zilotea, Urcinella, Testacina, Limacias, Rart- 
NESQUE, (See Terr. Moll., V., and Binney and Tryon’s edition of Rafinesque.) 
Plectrophorus, Bosc, See Férussac, Hist., p. 84, Pl. VI. Fig. 5-7. 
Phosphorax, WEBB & BERTH. Animal limaciform, swollen at middle: 
tentacles simple; mantle large, anterior, with 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: distinet 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 Férussac, Hist., Pl. IT. 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 Zoül. 
Rec., 1877, p. 74, founded on Parmarion Kersteni, 
