NECTOPYRAMIS DIOMEDEAE. 191 



Atlantic and from the Indo-Pacific region. Enough captures of C. intreus 

 have been recorded to show that it is widely distributed over the tropical Atlantic, 

 the Indian Ocean (Huxley), the Malaysian region (Lens and Van Rienisdijk), 

 and that it occurs rather commonly in the Eastern Tropical Pacific. 



Nectopyramidinae, nom. nov. 



NECTOPYRAMIS Biqelow. 



Nectopyramidinae with rounded nectophore; somatocyst represented by a 

 series of diverging canals. 



Nectopyramis was founded (Bigelow, :11b) for a Monophj'id distinguished 

 from all other members of the family by the above characters. To the type 

 species A'', thetis, the present collection has added a second, of which the Eudoxid 

 as well as the polygastric state is represented. As stated in the original descrip- 

 tion, this has no special nectophore, thus resembling the Eudoxids of the 

 Sphaeronectinae. 



The new species, N. diomedeae, is distinguished from the type species not 

 only by a very differently shaped nectophore and hydroecium, but by an even 

 more complex system of somatic canals. 



It was particularly fortunate that in one of the specimens there was a group 

 of appendages old enough to show their identity with a very large Eudoxid, 

 differing in many important features from any previously described. It is 

 possible that the problematical Clausophyes galatea of Lens and Van Riemsdijk 

 may belong in this subfamily. If it is a Monophyid as Lens and Van Riemsdijk 

 suggest, the large size of the nectophore points to this location, but the single 

 specimen was so fragmentary that it is impossible to get a correct idea of its 

 structure. 



Nectopyramis diomedeae, sp. nov. 

 Plate 1, figs. 1-6. 



Station 4652 400 fathoms to surface 2 excellent examples of the poly- 

 gastric state. Types. 

 " 4661 300 " " " 2 Eudoxids. 

 " 4669 " " " " 1 Eudoxid. 



" 4711 " " " " 1 Eudoxid. 



" 4732 2012 " " " 1 Eudoxid. 

 All the specimens, with the exception of one Eudoxid, were in excellent 

 condition. 



