On a new Genus of the Chimaeroid 

 Group Eariotta. 



K. Milsukuri. 



Eeadcrs' attention is called to Plate XVI giving the figures of two 

 individuals of the Chimaeroid Group. The lower figure is copied somewhat 

 reduced from the April Number of the American Naturalist aind represents 

 the. new Chimaeroid Hariotta ralcir/hana which Messrs. Goode and Bean 

 discovered among the collection made by the Albateoss. Its habitat is said 

 to be the coasts of Virginia, Maryland and Delaw'are, 707-1,080 fathoms. 



The upper figure represents a Chimaeroid which has for some years been 

 in the possession of the Zoological Museum of the Science College, in the 

 Imperial University of Tokyo. The specimen (male) was bought in the 

 Tokyo market and is marked as from Kuriliama, Province of Sagami ; there 

 can be no doubt that fishermen of that village caught it in the deep waters 

 (200 fathoms or more) contiguous to Misaki. Its unique characters had long 

 been noted by us. 



Unfortunately, I am not yet in possession of the original description of 

 Hariotta raleighana by Messrs. Goodb and Bean. But the short description 

 " the extremely elongate muzzle and the feeble claspers " as well as the 

 comparison of the two figures leave no doubt in my own mind that the two 

 individuals figured belong to the same genus. 



There can also be very little question that they belong to different 

 species. (1) The general shape of the body, (2) the shape and size of the 

 pectoral and ventral fins, (3) the point to which these fins reach when laid 

 back, (4) the shape and disposition of the dorsal fins, (5) distribution of the 

 lateral-line sense-system all seem to point to the specific distinction of the 

 Atlantic and Pacific specimens. The name of Hariotta pacifica will be most 

 appropriate to the Japanese species. 



