160 



SoLARiELLA OBSCURA, Vrar. BELLA, Verkruzen. 



Margarita hella, Verkruzen (1875) ; no description. 

 Mnchceroplux hella, Friele (1876) ; and G. O. Sars (1878). 

 Machoeroplax ohscura, var. hella, Verrill (1882). 

 Solariella ohscura, var. hella, Pilsbry (1889). 



Annapolis Basin (Verkruzen) ; off Cape Sable, Nova Scotia, in 90 fathoms, 

 U. S. Fish Commission, 1877 (Verrill). The "variety bella is the predo- 

 minant form at H^astport, Maine, and in the Bay of Fundy, where I dredged 

 it in 1864, 1865, 1868, 1870, in 10 to 40 fathoms." "It diflers from the 

 typical form chiefly in having the base covered with distinct, incised, spiral 

 lines " * (Verrill). The types of M. bella are from Magero, an island in the 

 Arctic Ocean, to the e.xtreme north of Norway. 



Solariella varicosa (Mighels and Adams). 



Margai'ita varicosa, Mighels and Adams (1842) ; et auct. 

 Machceroplax varicosa, G. O. Sars (1878). 

 Solariella varicosa, Pilsbry (1S89). 



Apparently more local than the two preceding species, but generally abun- 

 dant where found. According to Willis, this shell has been taken on the fishing 

 banks off Halifax ; and in 1872 Messrs. Smitt and Harger dredged it " off 

 Chebucto Head, Halifax, in 20 fathoms soft mud and fine sand with decaying 

 seaweed." The writer dredged it abundantly (in 1867 and 1869) off Grande 

 Greve, Gaspe Bay, in 30-50 fathoms mud ; also (in 1871) on the north shore 

 of the Gulf of St. Lawrence, off Sawhill Point, in 30 fathoms sand, — and off 

 St. John River (near the West Point of Anticosti), in 60 fathoms sand. In 

 the Strait of Belle Isle and on the Labrador coast it has been collected at 

 several localities, in from 1-50 fathom-^, by Packard in 1864 and by the 

 Stearns expedition in 1882. G. O. Sars' figures of the shell of this species 

 give a much better idea of its minute characters, than the corresponding 

 woodcut on page 285 of the second edition of Gould's " Invertebrata of Mas- 

 sachusetts." 



Calliostoma occidentale (Mighels and Adams). 



Trochus occidcntalis, Mighels and Adams (1841). 

 Margarita alahastrum, Beck (1846). 

 Calliostoma occidcntalis, Pilsbry (1889). 



Grand Manan, in 25 to 40 fathoms in the Hake Bay. "The specimens 

 were very large and beautiful, especially when alive." The animal has four 

 lateral cirrhi, thus differing from other Trochi, which have three ; and from 

 Margarita, which has five " (Stimpson). 



* 1882. Transactions of the Connecticut Academy of Arts and Sciences, vol. v., p. 531. 



