On neio Fishes from Central Africa. 487 



MastaeembeJus longicauda. 



Depth of body 24 times in total length, length of head 

 (without rostral appendage) 11 times. Vent much nearer end 

 of snout than base of caudal fin. Length of head 4 times in 

 its distance from vent and a little greater than its distance 

 from first dorsal spine. Snout 4 times as long as eye, ending 

 in a trifid appendage, which is not quite twice as long as eye ; 

 cleft of mouth extending to below anterior border of eye ; no 

 preeorbital spine; two strong prajopercular spines. Vertical 

 fins united with the very siiort, broadly rounded caudal. 

 Dorsal XXVII 150; last spine once and ^ diameter of eye. 

 Anal II 150 *. Pectoral one fourth length of head. 14 series 

 of scales between origin of soft dorsal and lateral line. Brown 

 above, yellow beneath ; a dorsal series of small dark brown 

 spots ; sides with lighter spots, some of which are ocellar ; 

 end of tail with large dark brown spots. 



Total length 305 mm. 



A single specimen from Akok, Kribi River. 



Allied to J/. Greshofji, Blgr., from the Congo, but form 

 more elongate, caudal tin more roinided, and no prteorbital 



pme. 



LXVII. — Descriptions of Three new Fishes from Central 

 Africa. By G. A. BOULENGEE, F.R.S. 



Petersius Woosnami. 



Deptli of body equal to length of head, 4 times in total 

 lengtii. Head longer than deep, with convex upper profile ; 

 lower jaw projecting slightly beyond upper; diameter of eye 

 equal to length of snout, 3 times in length of head ; maxillary 

 not extending to below anterior border of eye ; 14 teeth (°-) in 

 the upper jaw, 8 in the lower ; outer pra;maxillary teeth 

 tricuspid, inner multicuspid and inserted directly behind the 

 outer. Gill-rakers short, 12 on lower part of anterior arch. 

 Dorsal III 8, originating above base of ventrals and at equal 

 distance from end of snout and from root of caudal; longest 

 ray about | length of head. Adipose fin very small. Anal 

 111 17-18. Pectoral shorter than head, not reaching ventral. 



* The numbers of soft rays are approximative, the vertical fins of the 

 unique specimen being rather stiff, rendering the counting of the ravs 

 verv difficult. 



