056 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY IV. 



pcrcle. Body slender; head rather low; mouth large, subinferior, the 

 snout projecting beyoud it; gill-membranes free from isthmus (fide Col- 

 h-tt in lit.) ; live long cirri near the angle of mouth, one of them forked ; 

 a forked cirrus on lower jaw; snout longer than the large eye; the 

 longest cirri about as long as snout; a pair of short spines on snout; 

 a pair of knotty protuberances above eye, and a pair of larger ones on 

 frontal region ; shields of anterior part of back each with a large keel 

 ending in a spine; keels elsewhere bluutish ; plates of breast tubercle- 

 like and striate ; 4 shields between dorsals ; 5 before first dorsal ; 17 

 before second; 12 between veutrals and anal. Pectorals slightly 

 longer than head ; ventrals moderate, longest in the males, the vent 

 close behind them. Head 5 ; depth 8. D. VI-7 ; A. 7 ; Lat. 1. 40, the 

 number of pores about 24. L. 9 inches. Greenland to Xorway. (Collett.) 

 (Collett, Norske Nord-Havs Exp. 1880, 44.) 



Page 728. Agonm cataphractus. 



This species should probably be omitted as not occurring within our 

 limits, the Greenland references belonging to Leptayonus decagonus. 



I 'age 728. The genus Bothrayonus Gill here appears for the first 

 time, the portion of Bull. U. S. Nat. Mus. XI, in which it was to be 

 characterized having been withdrawn by the author. 



Page 733. Trigla cucitlus should doubtless be omitted. It probably 

 has never been taken on our coasts. 



Page 734. Instead of 1123, Prionotus punctatus read: 

 1123. P. MrittiilBis J. & G. 



For I lie synonymy given, substitute 



(I'riniintiix jnnidiiliix Jcr. & Gilb. Proc. U. S. Nat. Mua. 1878, 373, not of C. & V.; 

 Jor. A; Gill.. 1'ioc. U. S. Nat. Mua. 1882, 22d.) 



I'a.ue 7.". 1. After Prionotus scitulu* read: 

 1 1*. 51 d>). P. |>iBt<-tatn* (Bloch) C. & V. 



Olivaceous, with some small roundish spots; dorsal with a dark 

 blotch between fifth and sixth spines; soft dorsal and caudal faintly 

 barred ; pectoral with two lar-e blackish spots near its middle above, 

 besides numerous pale bars and spots. Body not very slender ; pec- 

 torals rather short, not reaching end of soft dorsal, slightly less than 

 half length of body; free rays of pectoral slender; band of palatine 

 te.-th short, rather broad; maxillary -\ in head, not reaching e\ ; 

 pivorbital feebly serrated, its edge armed with two rather strong 



