226 A. E. Verrill — Mollusca of the Neio England Coast. 



Cryptodon tortUOSUS (Jeffreys.) 



Axinm iortuusus JeOreys, Proc. Zool. Soc. London, for 1881, p. "702, pi. 61, fig. 6. 



Station 2078, in 499 fathoms, two specimens; station 2084, in 1290 

 fathoms, four living specimens (No. 38,175) ; and station 2115, oft' 

 Cape Hatteras, in 843 fathoms, two living S])ecimens (No. 35,611). 



Off the European coast, it was taken by the Porcupine Expedi- 

 tion, in 1870, and by the Travailleur Expedition, in the Bay of 

 Biscay. It occurred in 645 to 1012 fathoms. 



Malletia obtusa (M. Sars) Morch. 



Toldia obtusaG. 0. Sars, Remarkable Forms of Animal Life, p. 23, pi. 3, figs. 1(5-20, 



1872. 

 Malletia obtusa G. 0. Sars, Moll. Reg. Arct. Norvegise, p. 41, pi. 19, figs. 3, a-b. 

 Jeflfreys, Proc. Zool. Soc. London, for 1879, p. 586. 



This species occurred at stations 2018, 2041, 2042, 2043, 2076, 

 2077, 2084, 2095, 2096, 2102, 2105, 2106, 2110, 2115, in 516 to 1608 

 fathoms. It was most common at station 2043, N. lat. 39° 49', W. 

 long. 68° 28' 30", in 1467 fathoms, fifteen specimens (No. 38,180); 

 and at station 2090, N. lat. 39° 22' 20", W. long. 70° 52' 20", in 1451 

 fathoms, forty-five dead specimens (No. 34,782). 



Yoldia hyperborea Toreil. 



Torell, Spitzbergens MoUuskfauua, p. 149, pi. 2, figs. 6, a-b, 1859. 

 Yoldia limatula G. 0. Sars, Moll. Reg. Arct. Norvegiiu, p. 40, pi. 4, figs. 12, a-b, 

 1878 {7wn Say). 



This species is closely allied to Yoldia limatxda and Yoldia viyalis, 

 but is evidently distinct from both. Hitherto it has not been recog- 

 nized as an inhabitant of the American coast, but it is not uncommon 

 off" the coast of Nova Scotia. 



It was dredged by the U. S. Fish Commission at station 55, in 33 

 fathoms; stations 61-63 and 63-67, in 20-41 fathoms, 1877. 



Yoldia sericea Jeffreys, var. striolata J. 



Jeffreys, Mollusca Valorous Ex[)d., Ann. Mag. Nat. Hist, 1876, p. 432; Proc. 

 Zool. Soc. London, for 1879, p. 579, pi. 4(;, fig. 1. 



This species occurred at stations 2035, 2037, 2041, 2042, 2043, 

 2052, 2076, 2084, 2096, 2103, 2100, 2110, 2111, 2115, in 516 to 1731 

 fathoms. It occurred in greatest abundance at station 2076, N, lat. 

 41° 13', W. long. 00° 00' 5o", in 006 fathoms, one hundred and sixty 



