CICHLOSOMA. 27 
Barbados respectively, two from Western Ecuador, C. feste and C. ornatum, allied to 
C. urophthalmus or C. istlanum, and two, C. kraussi from Colombia and C. spectabdile 
from the Amazon, more specialized than any in the great protractility of the mouth 
and apparently allied to C. managuense. 
Synopsis of the Mexican and Central-American Species. 
I. D.XV-XVI10-13. A.V 7-10. Pectoral 3-3 the length of the head. Pramaxillary spines 
2 to 4 the length of head, extending to above anterior part of eye; maxillary not extending 
to below the eye ; canines moderate. 
A. Snout nearly as long as the postorbital part of head (in the adult) ; caudal peduncle as 
long as deep. 
1. Length of head 23 (young) to 3 (adult) in the length of the fish; jaws equal anteriorly. 
Interorbital width 33 to 34 in the length of head. A dark spot below the origin 
of the lateral line, another on the middle of the side, a third at the base 
ofcaudal . .. . 2 8 41. istlanum. 
Interorbital width 4 in the length of head. “An interrupted dark longitudinal 
band from operculum to the base of caudal . . . . . . . w . «42. steindachneri. 
2. Length of head 24 (young) to 2? (adult) in the length of the fish ; 
lower jaw slightly projecting ; coloration as in C. steindachneri . 48. bartoni. 
B. Snout shorter than the postorbital part of head (in the adult). 
Depth of body 2 to 23 in the length; caudal peduncle 2 as long as deep ; lower 
jaw slightly projectng . . . oe 44. beani. 
Depth of body 24 to 24 in the rengths caudal i pene as slong as deep; ; “lower 
jaw projecting. . . . . . . : ee ee . . 45. mento. 
II. D. XV-XVIT 10-12. A. VI 8-9. Pectoral # to 2 the length of head. 
Preemaxillary spines nearly $ the length of head, not extending to 
above middle of eye; maxillary extending to the vertical from anterior 
margin of eye; canines moderate . ... . woe ew ee 6 646. urophthalmus. 
Ill. D. XVI-XVIII 9-12. A. VI-IX 7-10. Preemaxillary spines 3 or slightly more than § 
the length of head, extending to above the middle of orbit ; maxillary extending to below 
anterior margin or anterior + of eye; canines strong. 
A. Last dorsal spine ? to 4 the length of head. D. XVI-XVII 9-12. 
Snout shorter than postorbital part of head (in the adult). A. VI-VIII 8-9. 
A dark spot above the origin of the lateral line, another on the middle 
of the side, a third at the base of the caudal. . . . . . 2. «© O47. trimaculatum. 
Snout as long as postorbital part of head (in the adult). A. VIII-IX 7-9. 
An interrupted longitudinal band from eye to base of caudal . . . . 48. salvini. 
B, Last dorsal spine ? the sng of head. D. XVIII 10. A. VII- 
VUI8-9 ... . - . » 2. . « 49. multifasciatum. 
C. Last dorsal spine 4 the length of head. D. XVII-XVIII 9-11. A. VII-VIII 8-9. 
Depth of preorbital § to 2 the diameter of eye (in specimens of 120 to 130 mm. 
in total length) ; caudal peduncle 3 as long asdeep . .. . . . . 50. friedrichstahii. 
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