( 242 ) 

 221. Chlamydera nuchalis (Jai-J. & Selby). 



POlunorhytichus nuchalis Jard. & Selby, //(. Oni. t. 103 (1838 : no locality). 



C. HucJiaVs oricntaUs is :i veiy closel_v allied, tUongli recognisable subspecies. 

 It is smaller, and has whitish tips to the leathers of the crovvu, but the more 

 spotted back is not a character to distinguish it by. 



? (?), Mt. Anderson, 31. x. 19ul (No. \i. 279). 



cj?, Negri River, East Kimberley, 22, 23. v. 19U2 (Nos. U. 420, II. 427). 



(? ?, Burundie, Northern Territory, 28. vii. 1902 (Nos. R. 002, U. 0o4). 



c?, Brock's C'reek, Northern Territorj-, 2. viii. 1903 (No. W. 0(>3). 



S ? , Eureka, Northern Territory, January, February 1903 (Nos. 1012, lU6G). 



1 t?, 2 ? ¥, South Alligator River, November 1902, May, June 1903 (Nos. 813, 

 1262, 1302). 



DESCRIPTION OF A NEW LORICARIID EISH OF TUE 

 GENUS XENOCABA FROM VENEZUELA. 



BY C. TATE REGAN, B.A. 



Xenocara rothschildi spec nov. 



Depth of body .5-55 in the length, length of head 2| (males) or 3 (females). 

 Head about 1 i as long as broad and twice as long as deep. Diameter of eye 

 0J-8§ in the length of head, interorbital width 2-21, length of snout l-j-lj. 

 Length of mandibular ramus 23-25 in the interorbital width. Snout with tentacles. 

 Interoperculnm with 9-13 spines, the longest }-'i the length of head. 23 or 24 

 scutes in a longitudinal series, 6 or 7 between dorsal and adipose fins, 10 or 11 

 between anal and caudal. Dorsal 1 7, the first ray 4-i the length of head, the 

 last, when laid back, separated by 1 or 2 scutes from the spiue of the adipose 

 fin ; length of base of dorsal a little less than its distance from the spiue of the 

 adipose fin, which is jireceded by a keel formed by 1 or 2 scutes. Anal 1 4. 

 Pectoral spine extending to anterior third or middle of ventral, t'audal obliquely 

 truncate, the lowest ray nearly as long as the head. Caudal peduncle 2'j-2^ as 

 long as deep. Uniform dull greyish, the fins dusky ; a dark spot at the base 

 of the first interradial membrane of the dorsal. 



San Esteban, near Porto Cabello, Venezuela. 



Five specimens, 113 to 17.j mm. in total length, collected by A. Mocquerys. 



This very distinct species has a shorter dorsal fin than any other of the genus ; 

 it is allied to X occidcntalc Regan, from E. Ecuador, and to A', chagreai 

 Eigeumann, from Panama. 



