8 ME, a. A. BOULENGEK ON A COLLECTION 



spines increasing in length to the sixth, which measures half length of head, the 

 posterior a little shorter ; longest soft rays a little longer than longest spines. 

 Pectoral ^ to § length of head. Ventral produced into a filament. Anal X 5 ; spines 

 increasing in length to the last, which equals the last dorsal ; longest soft rays f length 

 of head. Caudal rounded. Caudal peduncle as long as deep. Scales 32-33 ^ ; 

 lat. 1. ^jq • Brown, with indistinct traces of five darker vertical bars ; pectoral bright 



yellow, other fins blackish towards the border. 

 Total length 83 millim. 

 Two specimens from Kinyamkolo. 



4. Lamprologus moorii, sp. n. (Plate I. fig. 4.) 



9 or 10 equal, moderately large conical teeth in front of each jaw, followed by a 

 narrow band of minute teeth ; lateral teeth very small. Depth of body 2^ times in 

 total length, length of head 3 to 3^. Snout as long as diameter of eye, which is 

 3 to 3J times in length of head and equals interorbital width ; maxillary extending 

 to below anterior border of eye ; cheeks with small, deciduous scales ; opercles and 

 occiput scaled. Gill-rakers short, 9 or 10 on lower part of anterior arch. Dorsal 

 XIX-XX 8-9 ; spines slightly increasing in length to the last, which measures nearly 

 half length of head ; middle soft rays prolonged, at least f length of head. Pectoral 

 f to % length of head. Ventral prolonged into a long filament. Anal VII- VIII 

 6-7 ; spines increasing in length to the last, which is a little longer than the longest 

 dorsal ; middle soft rays prolonged into filaments. Caudal rounded. Caudal peduncle 

 as long as deep. Scales 33-35 ^f^ ; lat. 1. 2 a ^. Dark brown ; fins blackish. 



Total length 93 millim. 



Several specimens from Mbity Rocks and Kinyamkolo. 



5. Lamprologus modestus, sp. n. (Plate I. fig. 5.) 



A few large curved canine teeth, tipped with brown, in front of each jaw, followed 

 by a band of minute teeth ; lateral teeth very small. Depth of body 3^ to 3f times 

 in total length, length of head 3 to 3ij. Snout a little longer than diameter of eye, 

 which is 3 J to 4 times in length of head and equals interorbital width ; maxillary 

 extending to below anterior border of eye ; cheeks naked ; opercles and occiput scaled. 

 Gill-rakers very short, 7 on lower part of anterior arch. Dorsal XX 8-9 ; spines 

 increasing in length to the last, which is not quite half length of head ; middle soft 

 rays prolonged, § to f length of head. Pectoral about § length of head. Ventral 

 prolonged into a short filament. Anal V 6-7 ; spines increasing in length to the last, 

 which is as long as middle dorsals ; middle soft rays prolonged, like the dorsals. 

 Caudal truncate. Caudal peduncle as long as deep. Scales 36-40 j|^ ; lat. 1. j^- 



