501 CICHLID.TI. 



convex, as long as eye in adult, shorter in young; eye 3 to 3^ times in 

 length of head, 1 to 1^ times in interorbital width; jaws strong, lips 

 thick; mouth extending to below anterior fourth of eye ; 14 to 20 teeth 

 in upper jaw, 12 to IG in lower; interocular region scaly, convex; 3 or 

 4 series of scales on the cheek. 18 to 21 gill rakers on lower part of 

 anterior arch, the posterior rather elongate. Dorsal XVIII-XX 11-13 ; 

 spines rather strong, subequal from the eighth or ninth, f to ^ 

 length of head ; longest soft rays -^ to f length of head. Anal 

 III 12-13 ; spines very strong, third f to ^ length of head. 

 Pectoral f to f length of head. Ventral not reaching anal. 

 Caudal with deep crescentic notch. Caudal peduncle 1-| to 2 times as 



long as deep. Scales 75-78 -j^^g ; lateral lines ^^^^ ; 5 series of scales 

 between the lateral lines anteriorly, Olive-grey above, shading to 

 whitish below, with 7 or 8 somewhat irregular, yellowish-brown, longi- 

 tudinal lines ; two or three ill-defined dark brown bars across the back 

 and a round blackish spot at the root of the caudal fin sometimes 

 present ; a black opercular spot ; dorsal and caudal fins brown, with 

 round yellow spots. 



Total length 290 niilliin. 



Lake Tanganyika. — Types in Congo Museum, Tervueren. 



]-2. Ad. Xiaiidcolo. Dr. W. A. ("unningiou (''.). 



;». Hgr. ^loHio. ,, 



4. Hgi'. Kasakalnwc. 



.'). Skel. Suinba. ,, 



<;. Yg. Albertville. Capt. Hecq (C). 



7. Hgr. Kilowa Bay. Dr. L. Stai)pers (C'.). 



41. PARETROPLUS. 



VAi^vk. Vcrsl. Ak. Ainsterd. ii. 18r.-S. j). 'Ml ; Sauv. Hisf. Madag., Poiss. p. 445 

 (l.^'.tl) ; Bdulcng. Proc. Zool. Sue. l^W, \>. lU ; Pellogr. M(^m. Soc. Zool. 

 iM-uiicf. xvi. l'.K»-l, [). ;k5S. 



l^ody short; scales c}cl()id; two incomplete lateral lines. Teeth 

 rather large, with blunt crowns, forming a single series; one or two 

 more or less enlarged teeth on each side at the symphysis of either jaw ; 

 maxillary exposed. Dorsal with 16 to 20 spines, anal with 8 to 10. both 

 fins with a scaly basal sheath. A scaly process at base of ventral. 

 Occipital and parietal crests strong, extending to between the orbits. 

 A'(M-tebnr 34 (17+17). 



Madagascar. 



