Bihliographical Notice, 263 



XXXV. — Description of a new Cichlid Fish from the Lower 

 Niger. By G. A. Boulengeu, F.R.S. 



(Published by permission of the Trustees of the British Museum.) 



Pelmatochromis arnoldi. 



Deptli of body 2\ to 2| times in total length, length of 

 head 3 times. Head I5 to If times as long as broad; snout 

 roundedj with concave upper profile, much broader than 

 long, as long as the eye, which is 3^ times in length of head, 

 1^ to ]5 times in interorbital width, and slightly exceeds 

 pra^orbital deptli ; mouth moderate, extending to between 

 nostril and eye ; teeth small, in 3 series, 60 to 70 in outer 

 series of upper jaw; 3 or 4 series of scales on the cheek, 

 width of scaly part equal to diameter of eye. Gill-rakers 

 short, 9 on lower part of anterior arch. Uorsal XV-XVI 

 10-11, spines gradually increasing in length to the last, 

 which measures nearly ^ length of head ; median soft rays 

 produced into filaments, as long as or a little longer than 

 head. Anal III 8-9 ; third spine as long as or slightly 

 longer than longest dorsal. Pectoral ^ to | length of head, 

 not reaching origin of anal. Ventral produced into a fila- 

 ment, extending beyond origin of anal. Caudal rounded. 

 Caudal peduncle a little deeper than long. Scales cycloid, 

 28 j~ ; lateral lines g^y- Brownish or dark olive, with five 

 indistinct dark bars and six large, blackish, round spots on 

 each side, the first being the opercular spot ; fins greyish, 

 soft dorsal, anal, and caudal with small blackish spots. 



Total length 90 mm. 



Three specimens from the Lower Niger, presented to the 

 British Museum by Mr. J. Paul Arnold, of Hamburg. 



BIBLIOGRAPHICAL NOTICE. 



Memoirs of the Department of Agriculture in India. Entomological 

 Series. Yol. IV. No. 1. Eri Silk. By H. Maxw£LL-Lefeoy 

 and C. C. Ghosh, Agricultural llesearch Institute, Pusa. Pp. 130, 

 pis. ix., and 13 figures in the text. May 1912. Price Es. 3. 



The Eri silkmoth is one of the closely allied species belonging to 

 the genus Philosamia of Grote, of which P. ajnthia, Drury, from 

 Java, is typical. The present species, P. lunula of Walker, feeds on 

 the castor-oil plant, and is largely reared for its silk in various parts 

 of India. As the cocoon is open at the end, there is no occasion to 



