ACADEMY OF NATURAL SCIENCES. 107 



Color purplish-brown, passing into bluish grey beneath, and obsoletely lineated 

 longitudinally with darker. A large oblong pale diffuse spot beneath the poste- 

 rior end of the dorsal fin, which is directed obliquely downward and forward. 

 Irides silvery, tinged with yellow. The dorsal fin is pale greyish, marked ante- 

 riorly with a large diffuse blue-black spot, its soft portion being tinged with 

 reddish and margined above with yellow. The anal, ventrals and caudal are 

 bluish-grey, the former posteriorly tinged with faded red and edged with yellow. 

 Pectorals nearly colorless. 



Length, 18 inches. 



Habitat, Sandwich Islands. 



Remarks. — We have obtained only two individuals of this large species, both 

 of which were exposed for sale in the Honolulu fish-market. The colors, which 

 are no doubt considerably changed, were taken from the dead fish. 



Chironectes Cuv. 1817. 



C. niger, Garrett. 



D. 3-12 ; A. 6 ; V. 5 ; P. 10 ; C. 1, 7. 1. 



The head constitutes about one-third of the total length, caudal excluded. 

 The eyes are elliptically-oval, and inserted just once their greatest diameter dis- 

 tant from the margin of the upper jaw. The skin is covered with fine closely 

 set prickly asperities, which gives it a velvety appearance. The general outline 

 is ovate, and the greatest thickness equals one-sixth of the entire length. A 

 range of conspicuous pores commences on the upper part of the gill covers, 

 curving downward and upward to the symphysis of the lower jaw. Another 

 row follows the margin of the upper jaw, passing over the snout, where it 

 branches off posteriorly, curving over the eye and disappearing on the posterior 

 portion of the body. Each pore is encircled with brush-like appendages, which 

 gives them a tufted appearance. The dorsal fin extends over a base equal to 

 one-third the length of the fish. Its upper margin is arched, and its height as 

 compared to length is as one to two. The height and length of the anal fin are 

 about equal. 



Color deep black and obsoletely maculated with rather small roundish darker 

 spots. On the basal portion of the dorsal and anal fins may be observed two 

 large ocellations, with deep black pupils and paler areolae. Very minute 

 opaque white points may also be seen scattered along the lower parts. Eyes 

 blackish. 



Length, Z% inches. 



Habitat, Sandwich Islands. 



Remarks. — This species possesses the nasal tufted bristle and two horn-like 

 processes that we observe in all the species inhabiting these seas. When handled 

 it emits a most disagreeable odor. 



Dr. J. G. Cooper presented the following paper : 



