134 



BULLETIN 2 01, UNITED STATES NATIONAL MUSEUM 



Iceland. It does not appear to extend as far southward as does 

 P. affine. 



PSEUDOMMA TRUNCATUM S. I. Smith 



Figure 47 



P8eudomma, new species Whiteaves, 1874a, p. 5 ; 1874b, p. 191. 



Pseudonwna truncatum S. I. Smith, 1879, p. 99, pi. 12, figs. 3, 4. — Richters, 1884, 



p. 406.— Kindle and Whittaker, 1918, p. 253.— Tattersall, 1933, p. 6 ; 1939b, 



p. 283. 



Occurrence. — East coast of United States : Albatross station 2046, 

 3 young specimens. West coast of United States : Explorations in 

 Alaska, 1884, Lieut. G. M. Stoney, U. S. N., tag 27, latitude 62° 15' 



B 



Figure 47. — Pseudomma truncatum S. I. Smith: a, Ocular plate; b, antennal scale; c, telson. 



(After G. 0. Sars.) 



K, longitude 167 °48' W., 20y 2 fathoms, June 13, 1884, 4 females, 

 13-15 mm.; tag 28, latitude 62°54' N., longitude 166°38' W., 22 fath- 

 oms, June 14, 1884, 4 females; Albatross station 2861, 1 immature 

 male, 10 mm. 



Distribution. — This species was described by Smith from specimens 

 collected by Whiteaves in the Gulf of St. Lawrence. In 1884 Richters 

 recorded it from the Bering Sea. In 1933 I recorded it from British 

 Columbia, and in 1939 I added several new records from Canada. 

 As a matter of fact the specimens from Albatross station 2046 are 

 actually the first record from the coasts of the United States and the 

 most southerly record in the Atlantic Ocean. The species is a cir- 

 cumpolar boreal species extending southward in appropriate depths 

 on both sides of the American continent and the west coasts of Europe. 



