<s ART. 3.— HASHFORD DEAN. 



unpaired uns ave almost black in color, the tone softening somewhat 

 near the body-wall. I note also that there is à distinct bluish tint on 

 the anterior rim of the ventrale (which, by the way. are much larger 

 than in phantasma) and along the somewhat adipose anal. 



The mixipterygium is bifid, as in Gill's " Hydrolagus" although 

 in other regards, e. </. long opisthure, the specimen is a, typical Chi- 

 maera. The tip of the mixipterygium is covered with the usual fine 

 shagreen, which in the present instance passes up around the crotch of 

 the " clasper." The anterior ventral clasping organ is armed with 

 five denticles. In visceral matters : there is an intestinal valve of 

 3 l L turns : the lining membrane of the body cavity is unpigmented, 

 while the wall of the gut is dark colored. The dody wall is remark- 

 ably thin. Regarding dentition. " Premaxillary " plate is of large 

 size, with fewer tritors, about eight, than in C. phantasma. " Maxillary' 

 with three well marked tritors on its inner face, of these the most 

 lateral the narrowest. " Mandibular " with a single tritor projecting 

 sharply from its inner surface, much narrower than in the common 

 species. 



As nearly as I could ascertain, the present species was taken in 

 deeper water off Misaki, more concretely, in water of about 300 

 fathoms. It belongs evidently to a somewhat deeper zone than the 

 commoner species, which is taken oftenest in water of from 100 to 

 200 fathoms. That the new species is a deep water form is evident 

 from the greater size of the eye.— which measures do less than '/,., the 

 distance from snout tip to the basé of the dorsal spine, — from its dusky 

 color, as well perhaps as from its greatly extended opisthure. I may 

 note that it can be distinguished at a glance from the commoner 

 species by the lack of the conspicuous longitudinal bands along its 

 trunk region, by the large size of the ventral lins, and by a less 

 distinct anal. The new species has been named in honor of Professor 



