American Cicldid Genus Ciclilosoma. olO 



spine ; ventral extending to middle of anal. Caudal rounded. 

 Caudal peduncle |^ as long as deep. Olivaceous, with 7 dark 

 cross-bars, the fourth bearing a darker blotch below the 

 lateral line ; a dark spot on the upper ^ of base of caudal ; 

 vertical fins dusky, the soft dorsal with obscure darker spots. 

 Lake Managua, Nicaragua. 



1. (190 mm.) type of the species. Lake Maijaj^aia. Capt. .J. M. Dow, 



42. Clchlosoma labiaium. 



Ileros lahiatus, Guutli. Proc. Zool. Soc. 1864, p. 27, pi. iv. fi--. 1. and 

 Trans. Zool. Soc. vi. 1809, p. 456; Jord. & Everm. Bull. U.S. Nat. 

 Mus. xlvii. 1898, p. 1530 ; Pellear. 3Iem. Soc. Zool. France, xvi. 

 1903, p. 239 (1904). 



Depth of body 21 in the length, length of head 2^-23. 

 Snout as long as or longer than postorbital part of head. 

 Diameter of eye 4i-4f in the length of head, interorbital 

 width 3-3|. Depth of prseorbital equal to or a little more 

 than diameter of eye. Maxillary not extending to below the 

 eye ; pra^maxillary processes extending to above anterior \ 

 of eye ; jaws equal anteriorly ; upper and lower lip each 

 forming a large fleshy triangular flap ; 4 or 5 series of scales 

 on the cheek; 11 or 12 gill-rakers on the lower part of 

 anterior arch. Scales SOjg^j^, 3 between lateral line and 

 base of anterior rays of soft dorsal. Dorsal XVII 11-12, 

 commencing above the opercular cleft, the spines subequal 

 from the seventh to the fourteenth, thence increasing to the 

 last, which is l-'^ the length of head ; soft fin, when laid 

 back, extending to posterior part of caudal. Anal VII- 

 VIII 8-9. Pectoral f the length of head, extending to 

 above the fourth or fifth anal spine ; ventral extending 

 beyond origin or nearly to middle of anal. Caudal rounded 

 or subtruncate. Caudal peduncle |-i as long as deep. 

 Some specimens uniformly pale yellow, others brownish 

 with obscure darker cross-bars and dark spots on the vertical 

 fins. 



Nicaragua. 



1-3. (178-190 mm.) types of Lake Nicaragua. Capt. J. M. Dow. 



the species. 

 4-5. (162 and 178 mm.) Lake Managua. Dr. P. L. Sclater. 



Section 11 {Thorkhthys). 



Body deep or moderately elongate (depth 2-2f: in the 

 length). Upper profile of snout straight, oblique. Scales 

 of the lateral line of the same size as those above and below 



