MUSEUM OF COMPARATIVE ZOOLOGY. 



109 



Depth. Station. 



0-300 fathoms. 1 Hyd. 2619. 



Off Galera Point. 



3414. 

 350 miles S. E. of Acapulco. 



3416. 

 25 miles S. E. of Acapulco. 



0-100 fathoms. 2 3388. 



Gulf of Panama, 25 miles from 

 land. 



0-500 fathoms. Off Guaymas, from open part 

 of net. 



0-700 fathoms. 50 miles S. of Guaymas, from 



open part of net. 

 0-1,000 fathoms. Hyd. 2619. 



Off Galera Point, from open 



part of net. 



0-1,770 fathoms. Hyd. 2627. 



Between Cape San Francisco 

 and the Galapagos (nothing 

 in closed part of net). 



Euphausia mucronata. 



Euphausia pellucida. 



Nematoscelis microps. 

 Stylocheiron abbreviatum. 

 Stylocheiron suhmi. 

 Euchastomera typica. 

 Nyctiphanes australis. 

 Euphausia mucronata. 

 Euphausia pellucida. 

 Stylocheiron suhmi. 

 Euphausia mucronata. 

 Euphausia pellucida. 

 Nematoscelis microps. 

 Euphausia pellucida, 

 Nematoscelis microps. 

 Nyctiphanes australis. 

 Euphausia mucronata. 

 Nematoscelis microps. 



Euphausia gibboidos, 

 Nematoscelis microps. 

 Stylocheiron flexipes. 3 



This series shows that the catches in the open part of the Tanner net to 

 depths of more than 300 fathoms do not contain more species than those 

 between and 300 fathoms. It is also to be noted, that the hauls to 500 

 and more fathoms 4 contain a remarkably small number of species. All the 

 species obtained by the hauls extending from the surface to greater depths than 

 300 fathoms certainly occur, as is shoiun by other catches, in depths less than 300 

 fathoms, and it is very probable, that they occurred also in the same lesser depth 

 here ; especially Euphausia mucronata, pellucida, and gracilis, Nematoscelis mi- 

 crops, and others. 



From 200 fathoms were obtained in the closed part of the Tanner tow-net, 

 in the Gulf of Panama, about 60 miles from the 100 fathom line (Station 

 3382), Thysanopoda agassizi, 1 specimen, Euphausia mucronata, 6 specimens, 

 Nematoscelis microps, many specimens, Stylocheiron flexipes, 3 specimens. 



1 It should be borne in mind that at no station at sea did the closed part of the 

 Tanner net bring up anything from a depth of 300 fathoms. — A. Agassiz. 



2 Nothing in the closed part of the Tanner net when towed at 400 fathoms. 

 8 Is also found at Station 3382, in 200 fathoms, in the Gulf of Panama. 



4 All of which come from the open part of the Tanner net, the closed part of the 

 net having at no station at sea brought up anything. — A. Agassiz. 



