140 DR. GWYN JEFFREYS ON THE MOLLUSCA OF THE [Feb. 19, 



P. 930. Lyonsia formosa. Off West coast of Africa (' Talisman ' 



Exp.); 452-731 fins. 

 P. 932. Pecchiolia svbqtiadrata. Off Sahara (' Talisman ' Exp.) ; 

 C81-1261 fms. I overlooked other 'Porcupine' 

 Stations for this species, viz. 1869: St. 16, 17. 

 Tliese specimens are larger than the size given in the 

 description. 

 „ Pecchiolia inscutjita. Off West coast of Africa and 

 Azores ('Talisman' Exp.); 478-681 fms. Very 

 large and fine specimens. 

 P. 933. Pecchiolia unyulatu. Off Marocco and Sahara (' Talis- 

 man ' Exp.) ; 617-/81 fms. An extraordinarily 

 large valve from the latter station. 

 „ Pecchiolia aculicostata. Off Marorco (' Talisman ' 

 Exp.); 650 fms. A large valve. 

 P. 937. Necera subtorta. Fossil. Post-tertiary : Garvel Park, 



Greenock {Scott and Steel). 

 P. 938. Necera cuspidata. Off Marocco (' Talisman ' Exp.) ; 

 9,i-13S fms. 

 „ Ne<Era gracilis. Off Marocco ('Talisman' Exp.); 



599-1300 fms. 

 „ Necera rostrata. Off Marocco and Azores ('Talisman ' 

 Exp); 470-1 137 fms. 

 P. 940. Necera depressa. Off Sahara and the West coast of 

 Africa ('Talisman' Exp.): 452-1261 fms. 

 „ NecEra lamellosa. Off Sahara (' Talisman ' Exp.) ; 

 1261 fms. 

 P. 941. Necera contracta. Off Marocco and Azores ('Talisman' 

 Exp.); 1192-1622 fms. Mr, Dall now refers this 

 species to his N. limatula, described in the Bulletin of 

 the Museum of Comparative Zoology, vol. ix. No. 2, 

 p. 112. His report is dated December 5, 1881. 

 But in that description he says that his species is 

 clearly not one ot mine. He has since had an 

 opportunity of compai'ing the types of both species. 

 „ Necera semis f riff osa. Referred by Mr. Dall to his N. 

 lamellifera in the same publication. My publication 

 is dated Nov. 29, 1881. 

 P. 942. Necera circinata. Off Marocco (' Talisman ' Exp.) ; 

 1 138-1 190 fms. Very fine specimens. 

 „ Necera rtiginosa. Off West coast of Africa ('Talisman ' 

 Exp.); 452-1254 fms. 

 P. 943. Necera cvrta. Behring Sea (' Vega ' Exp.) ; 65 fms., 

 as iV. behringensis of Dr. Leche. The sculpture of 

 all the ribbed species of this genus is variable. 

 P. 944. Necera striata. Off Marocco (' Talisman ' Exp.) ; 452- 



861 fms. 

 P. 945. Mya truncuta. Off C. St. Vincent ('Talisman ' Exp.); 

 56 fms. A fresh-looking valve of a young speci- 

 meu. 



