214 A. E. Yorrm—Mollusca of the New England Coast. 



37° 12' 20", W. long. 69° 89', one living specimen (No. 38,233) ; sta- 

 tion 2100, N. lat. 39° 22', W. long. 68° 34' 30", eleven living speci- 

 mens (No. 38,243). 



Styliola virgula, var. corniformis (D'Orb.) 



Hyalcea cormformis WOrh., Voy., vol. v, p. 120, pi. 8, figs. 20-23, (t. Souleyet). 

 Cleodora virgula, var.. Rang aud Souleyet, Hist. Nat. Moll. Pteropotles, p. 57, pi. 1.3, 



fig. 22. 

 Cleodora virgula, var., Souleyet, Voy. de la Bouite, atlas, pi. 8, fig. 24, 1852. 



This shell is very similar to the preceding, except that the posterior 

 part is strongly curved to one side. 



Living specimens occurred at stations 2039 and 2100, with tlie 

 normal form, as given above. 



Triptera columnella (Rang.) 



Cuvieria cobimnella Rang, Ann. des sc. nat., vol. xii, p. 323, pi. 45, figs. 1-8. 

 Rang and Souleyet, Hist. Nat. des Moll. Pteropodes, p. 59, pi. 4, figs. 1-11, and 

 plate 14, figs. 1-6, 1852. 



Station 947, off Martha's Vineyard 89 miles, one dead specimen 

 (No. 38,196), 1880; station 1095, N. lat. 39° 55' 28", W. long. 69° 47', 

 one dead specimen (No. 38,163), 1882. Dead specimens were also 

 dredged at stations 2041, 2043, 2084, 2096, 2109, 2110 and 2115. At 

 the last named locality, off Cape Hatteras, twenty specimens occurred 

 (No. 35,614). The most northern station was 2084, N. lat. 40° 16' 

 50", W. long. 67° 05' 15', where four specimens were taken. It is 

 common in the tropical parts of the Atlantic. 



Spirialis trochiformis Souleyet. 



Atlanta trochiformis D'Orb., Voy., p. 177, pi. 12, figs. 21)-31, (t. Souleyet). 

 Sinrialis trochiformis Souleyet, Rev. Zool., p. 2.39 ; Toy. de la Boiiite, vol. ii, p. 223, 

 atlas, pi. 13, figs. 27-34, 1852. 

 Rang and Souleyet, Hist. Nat. Moll. Pteropodes, p. G4, pi. 14, fig.'j. 27-31. 



Station 2100, N. lat. 39° 22', W. long. 08° 34' 30", at the surface, 

 numerous living specimens, (No. 35,222). 



This species is common throughout the warmer parts of the Atlantic. 

 It is particularly abundant in the Gulf Stream, off the coast of 

 Florida. 



