512 A, E, Verrill— Catalogue of Marine Mollusca. 
Fusus ( Tritonofusus) syrtensis (Packard), p. 511. 
Fusus (Tritonofusus) Kréyert (M61), p. 510. 
Fusus (Chrysodomus) Ossiani (Friele), p. 509. 
Fusus (Neptunea) despectus (Linné), p. 499. 
Variety, tornatus (Gould), p. 499. 
Fusus (Neptunea) decemcostatus (Say), p. 499. 
Fusus ( Volutopsis) Norvegicus (Chemn.), p. 511. 
The genus Fulgur (including Sycolypus Gill, non Gray)-is closely allied to the pre- 
ceding forms. It includes two common New Hngland species: # caricus and F. 
canaliculatus. 
-Nassa nigrolabra Verrill. 
Nassa nigro-labra Verrill, Proce. U. S. Nat. Mus., iii, p. 871, 1880. 
PuatTe LVITI, Figure 12! 
OM Martha’s Vineyard, station 870, in 155 fathoms ; one specimen, 
This species was referred to Vassu, only provisionally. The animal 
is not known. } 
A single fresh, but dead, specimen of a eancellated Massa, resem- 
bling V. tnerassata, of Europe, was dredged by us, off Halifax, in 
1877. It may have been a ballast-specimen. 
Trophon clathratus, var. Gunneri (Lovén). 
Tritonium Gunneri Loven, Index Moll. Lit. Scand. occid. hab., Ofversigt Kongl. vet. 
Akad. Férh, [p. 12], 1846, 
Murex (Trophon) Gunneri Morch, Faunula Ins. Feroénsium, Vid. Med. Nat. For., 
1867, p. 84. 
Trophon Gunnerit H. and A. Adams, Genera, i, p. 
Verrill, Amer. Journ, Sci., v, p. 6, 1873. 
Trophon clathratus, var. Gunneri G. O. Sars, Fauna Reg. Arct. Norvegiz, p. 247, pl. 
15, figs, 11, a, 6. x 
PLATE XLII, FI@uReE 8. 
Le Have Bank, 45 and 60 fathoms, Smith and Harger, on the 
* Bache,” 1872. Off Cape Sable, N.8., 59 fathoms ; mouth of Hali- 
fax harbor, 16 and 18 fathoms, 1877,—U.S8. Fish Com, steamer 
“Speedwell.” Gaspé Bay! (coll. Whiteaves). Metis! both forms, 
(coll. Dawson). 
This is an arctic species, probably cireumpolar, found at Greenland, 
Iceland, Nova Zembla, and the extreme northern parts of Europe. 
Finmark,—Loyeén, Sars; Bergen,—Norman; Kariska Sea, 10 to 20 
fathoms,—Leche. 
By Jeffreys, G. O. Sars, Leche, and others this shell has been 
regarded as a mere variety of 7. clathratus (Linné)= 7! scalariforme 
Gould. Among a considerable number of specimens that I have ex- 
amined from American waters IT have seen few intermediate speci- 

