Bibliographical Notice. 263 



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

 Niger. By (Jr. A. Boulenger, F.R.S. 



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



Pehnatochromis arnoldi. 



Depth of body 2.\ to 2| times in total lengthy length of 

 head 3 times. Head 1^ to 1| times as long as broad 5 snout 

 rounded, with concave upper profile, much broader than 

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

 \\ to li- times in interorbital width, and slightly exceeds 

 praiorbital depth ; 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. l)orsal 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 4 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 ^—^ ; lateral lines ^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 Dejyartment of Agriculture in India. Entomologiccd 

 Series. VoL IV. No. 1. Eri Silk. By H, Maxwell-Lepeoy 

 and C. C. Ghosh, Agricultural Research 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 PJiilosamia of Grote, of which P. cpiihia, Drury, from 

 Java, is typical. The present species, F. 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 



