138 MH. G. A. EOTTLENGER ON THE AFRICAN AND [Mar. 1, 



7-9 series of teeth in the jaws ; pectoral as long as 

 head 9. refrodens, Wilg. 



B. 2-5 series of scales on the cheek ; dorsal 

 ■with 8-12 soCt rays. 



1. Scales 28-32 in a longitudinal series. 



a. Pectoral j to f length of head. 



Sc. 29-32 jx ; maxillary not extruding to below eye... 10. afra, Gthr. 



Sc. 28 ~ ; maxillary extending to below anterior 



border of eye 11. hloycti, Sauv. 



Sc. 31 jj; maxiUary extending to below eye 12. serramis, Pfeff. 



b. Pectoral as long as head. 



Sc. 30^; maxillary not extending to below eye 13. schwebucJd, S&av. 



2. Scales 32-36 in a longitudinal series. 



a. Caudal peduncle slightly longer than 

 deep. 



Sc. 32-34 ^^ ; pectoral | length of head 14. modesta, Gthr. 



Sc. 35-36*^; pectoral J length of head 1.5. liviTigstonii, Gihx. 



h. Caudal peduncle 1^2 as long as deep. 



Sc. 33-36 -j^ ; pectoral as long as head 16. intennedia, Gi\\r. 



o 



Sc. 35-36 ,^^; pectoral § length of head 17. dimidiata, Gthr. 



3. Sc. 40-41 ^ 18. longkeps, Gthr. 



1. Paratilapia polleni. 



ParaiUapia polleni, Bleek. Versl. Ak. Amsterd. ii. 1868, p. 307 ; 

 Bleek. & Pollen, Poiss. Madag. p. 10, pi. v. fig. 2 (1875); 

 Steindacbn. Sitzb. Ak. "Wien, 1880, p. 247 ; Sauvage, Hist. 

 Madag., Poiss. p. 443, pi. xliv. fig. 2 (1891). 



Teeth in 4 or 5 series. Depth of body 2 to 2^ times in total 

 length, length of head 2| to 2i times. Snout with straight or 

 concave upper profile, as long as the eye in the young, Ig in the 

 adult ; diameter of eye 4 to 6 times in length of head ; interorbital 

 width equal to diameter of eye in the young, Ig in the adult ; 

 maxillary extending to below anterior third of eye ; 4 to 6 series of 

 scales on the cheek ; large scales on the opercle. Gill-rakers mode- 

 rately long, 7 to 10 on lower part of anterior arch. Dorsal X-XII 

 11-12 ; spines increasing in length to the last, which measures g to 

 i length of head, and g to § length of longest soft rays. Pectoral | 

 lengtli of head. Ventral reaching vent or anal. Anal III 8-11 ; 

 third spine a little shorter but stouter than longest dorsal spine. 

 Caudal rounded. Caudal peduncle nearly as long as deep. Scales 

 finely denticulate on the border, 28-30 j-gf ; lat. I. ^,. Dark 



brown or blackish, uniform or with bluish-white spots. 

 Total length 205 millim. 

 Madagascar. 



