4 AART. 3.— BASHFORD DEAN. 



than any chimaeroid which I have examined. (C. colliei, monströs«, 

 (ijlnüs, mitsvkurii) in fresh condition ; and the general curvature of the 

 head and body is roundly continuous to a degree which suggests a 

 swift-swimming teleost. Living specimens are of exceptionally 

 brilliant color and iridescence, altogether the most beautiful chimae- 

 roids I have seen. The general color is silvery, and there is a series 

 of jet black bands which pass down the side of the body from head to 

 tail, fading away in the latter region. The bands are more numerous 

 anteriorly where they frequently break into a scries of mottlings, the 

 lowermost following 1 the lateral line. Between the anterior dorsal 

 tin spine and the lateral line as many as four of these bands can be 

 counted. 'The dark coloration continues along the roof of the head, 

 and extends as far as the snout tip. The opercular fold shows also a 

 degree of mottling as indicated in the accompanying figure. (PI. F. 

 Fig. r>.) The dorsal tin throughout its length is black at its base, but 

 becomes unpigmented from this line outward as far as near the 

 margin. Here there appears a continuous black band, narrow but 

 distinct. The paired fins are pigmented notably on the anterior and 

 posterior margins : their pigmentation ceases at the lobate bases of the 

 pectoral fin (ventral side), but is continued irregularly on the ventral 

 fins. I note also irregular pigmentation in the region of the ventro- 

 median line posterior to the ventral fins and anterior to the rudiment 

 of the anal. 



The disposition of the mucous canal system of the head shows 

 no noteworthy differences from other chimaeroida. The dental plates 

 are stout and present well marked tritoral areas. In the ' : pre- 

 maxillary " plates about eight 'tritoral lines are present, of which the 

 median pair are mosl conspicuous. Each palatine plate is margined 

 (laterad) bv about a dozen grinding points and possesses two large 

 tritors in the median region. The conspicuous tritor in the anterior 



