556 ME. G-. A. BOULENGER ON A COLLECTION 



of eye; 8 rather large canine teeth in front of the upper jaw and 4 in the lower, 

 followed by a moderately broad band of minute, villiform teeth ; lateral teeth small ; 

 cheek naked, operculum scaly ; pits of sensory canals very large. Gill-rakers short, 

 9 on lower part of anterior arch. Dorsal XVIII-XIX 11, spines subequal from the 

 eighth, -f length of head ; longest soft ray f length of head. Anal IV 7, fourth spine 

 as long as longest dorsals. Pectoral rounded, § length of head. Ventral reaching 

 origin of anal. Caudal rounded. Caudal peduncle slightly longer than deep. 

 Scales 40-43 -~; lateral lines ^j^P. Brown, somewhat lighter beneath, with darker 

 and lighter longitudinal streaks on the sides and five broad dark transverse bands ; 

 vertical fins with numerous round whitish spots. 



Total length 83 millim. 



A single specimen from Niamkolo. Native name : Sietela. A young specimen was 

 obtained in Komba Bay. 



Very closely allied to L. tetracanthus Blgr., with which it agrees in the short anal 

 fin with only four spines. Distinguished by the larger mouth extending to below 

 the anterior border of the eye, and by the absence of a whitish marginal band on the 

 dorsal fin. 



30. Lampeologus elongatus Blgr. 



This species, which was established on young specimens, proves to be the giant of 

 the genus, exceeding L. lemairii in size. Three large specimens were brought home 

 by Dr. Cunnington. 



1. Niamkolo, off Mtondwe Island. Native name : Kibua. Total length 325 millim. 



D. XVIII 11 ; A. V 9 ; Sq. 90 g ; L. 1. g. 



2. Sumbu. Total length 120 millim. D. XVII 10 ; A. V 8 ; Sq. 85 g ; L. 1. |. 



3. Niamkolo Bay, taken from an empty Neothauma shell, dredged in a few fathoms. 



Total length 63 millim. D. XVIII 10 ; A. VI 8 ; Sq. 92 g ; L. 1. fg. 



The cheek, which is naked in the young, is much deeper (3 times diameter of eye) 

 and covered with very small scales in the adult. The depth of the body is contained 

 from 3f to 4 times in the total length, the length of the head 2-f to 3 times. Diameter 

 of eye, in the adult, 8 times in length of head, 3 times in length of snout, once and 

 -| in interorbital width ; the band of minute teeth behind the canines is much broader 

 than in the young, and the longest rays of the dorsal and anal fins measure nearly ■§■ the 

 length of the head. 



Dr. Cunnington describes the adult, when fresh, as black with white mottling. The 

 vertical fins are dark brown, with round light spots. 



Dr. Cunnington has noted that the fish readily takes artificial spinning-bait. 



