352 



PROCEEDINGS OF THE NATIONAL MUSEUM. 



VOL. 42. 



that so far as the cyclogasterids are concerned, a sharp line separates 

 the fauna of Bering Sea from that of the Okhotsk and the seas to the 

 south. 



Within the Japanese area, while data are still incomplete, a faunal 

 line of some value appears to separate the inclosed Sea of Japan 

 (including the Gulf of Tartary) from the Okhotsk Sea and the eastern 

 shores generally. As is shown in the following table of distribution, 

 12 species are recorded from the Sea of Japan and 24 species from 

 the Okhotsk and the eastern shores of Hokkaido and Hondo; and 

 but five of these are known to occur in both districts. Further 

 exploration will increase the distribution of many of these species, 

 but can hardly obliterate the faunal distinction which here seems 

 apparent. 



The types of the new species here described are all deposited in 

 the United States National Museum. 



The drawings are by Mr. W. S. Atkinson. 



Table of distribution of Japanese Cyclogasterids. 

 [Names in brackets are of species previously known.] 



Name. 



Sea of 

 Japan. 



Okhotsk 



and 

 ea8t«rn 

 coast. 



Bering 

 Sea. 



Depth. 



Cyclogaster curilensis 



Cyclogaster simushirx 



Cyclogaster tessellatus 



Cyclogaster Uigassizii] 



Cyclogaster frenatus 



Cyclogaster tanakx 



Cyclogaster [owstoni] 



Cyclogaster [ochotensisl 



Cyclogaster mgens 



Careproctus [cypselurus] 



Careproctus rastrinus 



Careproctus acanthodcs 



Careproctus trachysoma 



Careproctus rhodomelas 



Careproctus pellucidus 



Careproctus segaliensis 



Careproctus bathycoetus 



Careproctus roseofuscus 



Careproctus [collctti] 



Careproctus sinensis 



Careproctus pycnosoma 



Careproctus curilanus 



Careproctus homopterus 



Careproctus entomelas 



Careproctus entargyreus 



Crystallias [matsushimse] 



Paraliparis atramentatus 



Paraliparis melanobranchus . 



Paraliparis entochloris 



Rhinoliparis [barbulifer] 



Nectoliparis [pelagicus] 



Shore. 



Shore. 



61 to 150 fathoms. 



Shore to 47 fathoms. 



207 fathoms. 



Unknown. 



Unknown. 



21 to 75 fathoms. 



250 fathoms. 



510 fathoms. 



73 to 119 fathoms. 



318 fathoms. 



243 to 429 fathoms. 



405 to 507 fathoms. 



129 to 182 fathoms. 



119 fathoms. 



1,800 fathoms. 



100 to 119 fathoms. 



390 to 440 fathoms. 



200 fathoms. 



229 fathoms. 



229 fathoms. 



440 fathoms. 



428 fathoms. 



35 to 66 fathoms. 



52 to 200 fathoms. 



649 fathoms. 



440 fathoms. 



100 fathoms. 



192 to 359 fathoms. 



269 to 533 fathoms. 



KEY TO JAPANESE SPECIES OF CYCLOGASTER. 



c^ Anterior portion of dorsal separated from remainder of fin by a deep notch. 



b^. Gill slit extending downward to opposite base of upper pectoral ray only; pyloric 

 cseca about 70; diameter of disk half length of head; dorsal 34; anal 26; pec- 

 toral 29 curilensis, 1 . 



62. Gill slit extending downward to opposite base of fourth pectoral ray; diameter 

 of disk much less than half length of head; dorsal 44; anal 34; pectoral 40, 

 simushirse, 2. 



