THE BARNACLES -TN THE U. S, NATIONAL MUSEUM. 

 Localities in the western Atlantic. 



27 



Locality. 



North lat- We.st lon- 

 itude. gitude. 



43 34 00 



42 55 30 



42 48 00 



42 44 00 



42 40 00 



49 00 00 



50 51 

 63 07 

 65 54 



63 06 CX) 

 Le Have Bank. 



65 67 30 



68 50 00 



68 54 00 



70 40 30 



71 18 45 



73 09 00 



73 50 30 



73 58 00 



74 30 00 

 74 30 (10 

 76 40 30 



Depth. 



Collector, etc. 



Fathoms. 



471 



35 

 350-400 



160 



Capt. F. F. Hodgdon. 



Albatross. Oflf Newfoundland. 



Capt. Jos. \V. Collins, 187S. 



Unknown. 



Capt. Jerome McDonald. 



Capt. Daniel McKinnon. 



677 j Albatross. 



3.51 ' V. S. F. C. 

 640 ! Do. 



445 I Albatross. 



1,073 



965 

 865 

 811 

 781 

 727 

 731 



Albatross. 



Albatross. 

 Albatross, 

 Albatross. 

 Albatross. 



Do. 



Do. 



Bottom temperature, 38.7°. 

 Off Marthas Vineyard. 



Bottom temperature, 39.6°. 



Bottom temperature, 38.1°. 



Bottom temperature. 36.8°. 

 Bottom temperature, 38°, 

 Bottom temperature, 38.2°. 



This magnificent species may be recognized by the characteristic 

 shape of the carina, wiiich has a flat roof with bordering- flanges and a 

 squarely truncate base, not triangularly entering between the carina! 

 latera, as in the allied large species. The roof is much wider basally 

 than in other related species, its wndth there varying from one-fourth 

 to over a third of the whole length of the carina. 



The largest individual before me measui'es: Length of capitulum 

 56, breadth 38 mm.; length of peduncle 36 mm., carina .50 mm. long, 

 with a basal diameter of 18 mm. It is from the Great Banks of New- 

 foundland. 



The group figured is part of No. 12480, U.S.N.M., taken on the 

 fishing ))anks in 35 fathoms. 



S. velutimim has a wide range on both sides of the Atlantic. It 

 was taken bj'^ the CJiallenger at two stations near Tristan da Ciinha, 

 but all other records are from north of the equator. It seems to 

 extend farther north on the American than on the European side. In 

 our waters it has been found from about the latitude of Charleston, 

 South Carolina, to above that of Boston, 32° 40' to 43° 34' north lati- 

 tude, in depths of from 35 to over 1,0()0 fathoms, the bottom temper- 

 ature ranging from 36.8° to 39.6°. It is common on the fishing banks, 

 and is frequently brought up on the lines of the Gloucester fishermen. 



S. velutinuin has been reported by Dr. Annandale from the Gulf of 

 Oman, in 430 fathoms. ScalpeUuiih fornix Alessandri, of the Italian 

 miocene, is closely related to S>. velutinum. 



