no. 2075. FISHES FROM SOUTHERN CALIFORNIA— GILBERT. 



321 



(3) The lower supra ventral, which, in regale is near lateral line and 

 much above the level of the first supraanal. 



(4) The posterior position of the upper and middle supraanals, the 

 upper in regale being in advance of first anal ray. 



(5) The lower last anteroanal, this in regale half way between the 

 preceding anal and the posterolateral. 



(6) The lighter fins, the fin membranes being all black in regale. 



(7) The much smaller adipose fin. 



(8) The more anterior insertion of ventrals. 



(9) The shorter head. 



Paratypes were secured from the following stations : 



4400 

 4403 

 4539 



Off San Clemente Island 



.....do 



Monterey Bay 



Fathoms. 

 500-507 

 599-505 

 551-350 



A single very young specimen was also secured by Doctor Kitter, 

 off La Jolla, near San Diego, at a depth of about 400 fathoms. 



CHAULIODUS MACOUNI Bean. 



List of stations. 



4393 

 4405 

 4515 

 4544 



Off Santa Catalina Island 

 Off San Clemente Island. 



Monterey Bay 



do 



Fathoms. 



2,113-2,259 



645-704 



718-756 



724-1,000 



The above depths have no significance, as the species may well 

 have been captured as the open-mouthed trawl was being hauled to 

 the surface. It has frequently been taken in nets sent down to only 

 300 fathoms, and is undoubtedly to be reckoned among the deep 

 pelagic forms. In one specimen the stomach contents consisted of 

 Sagitta and other pelagic organisms. 



G. macouni is evidently distinct from C. sloani, C. barbatus, and 

 C. pammelas, having a larger number of ventral photophores than 

 either of these species. According to Brauer 1 C. sloani has 23 to 26 

 ventral organs, usually 23 or 24, while C. barbatus has 22 or 23 and 

 C. pammelas 20 or 21. In O. macouni there are 26 to 29 photo- 

 phores between the front base of ventrals and the front of anal fin, 

 usually 27 or 28. This number agrees with that given by Garman 

 for C. dentatus (29). But the latter species has a wider pectoral 

 (14 rays), a longer anal (13), and a larger number of photophores from 

 front of anal to caudal (14) than we have found in any specimen of 

 C. macouni. On the other hand, the California species seems to 

 agree in every respect, both as regards proportions of parts and the 



i Die Tiefsee Fische, 1906, p. 41. 

 r,97r>S°— Proc.N.M.vol.48— 14 21 



