24 i\C.\KTHOPT£ETGII. 



B. Dorsal spines subequal from the fifth or sixtli or incrensing in length throughout. 



1. D. XIV-XV 12-15. A. V-A^I 8-9. 11 gill-rakers on the lower part of anterior arch ; 



snout not longer than postorbital part of head. 



Pectoral as long as the head ; depth of body ll in its length ; last dorsal 



spine 5 the length of head; caudal rounded 29. iiiacracorithv.'i. 



Pectoral a little shorter than the head; depth of body 2 in its length ; last 

 dorsal spine i the length of head (a little more in the young) ; caudal 

 suhtruncate 30. Iieferodanluin. 



2. ri. XVI 11. A. V 8-9. 12 gill-rakers on the lower part of 



anterior arch ; snout longer than postorbital part of head ; 



pectoral extending uea iy to above origin of anal . ..... 31. a/tifron.s. 



3. D. XYI-XVII 11-12. A. Yll 8-9. 



a. Pectoral extending to above the last anal spine; 12 or 13 gill- 



rakers on the lower part of anterior arch ; snout longer than 



postorbital part of head 32. rosiratum. 



b. Pectoral extending to above the third or fourth anal spine. 



12 gill-rakers on the lower part of anterior arch; caudal slightly 



emarginate, «itli rounded lobes 33. marjiiiritifennn. 



9 or 10 gill-rakers on tlie lo\ier part of anterior arch; caudal 



rounded 31. citrinelluin. 



II. Lips exccjitionally thick; anterior pair of teeth in the upper jaw strongly enlarged; 

 two anterior ]iairs of teeth in the lower jaw enlarged and subequal. 

 I). XVII 11-12. A. VII-VIII 8-9. Pectoi'al extending to above the third to lifth anal 

 spines. 

 A. Lips subnormal, scarcely produced mcdianly 35. erythrteuin. 



13. Each lip jiroduccd mcdianly as a long fleshy flap. 

 Length of head nearly 3 in the length of the fish ; 9 gill-rakers on the lower 



part of anterior arch .36. lobuchihis . 



Lengtli of head 2.', to 2 -| in the length of the lish ; 1 1 or 12 gill-i'akers on the 



lower part of anterior arch 37. lahudum. 



27. Ciclil'^'ioma ro'oertsoni, Eegan, lOU-j. (Tab. ill. fig. L) 



Ciclilosoina roberiaoni , Regan, Ann. Mag. N. LI. (7) xvi. 1905, p. 239. 

 llaJj. British Honduras, Stann Creek [liohertsoii). 



28. Ciclilosoma longimaiius, Gunth., 1SG9. 



Cich/osoma lofH/iiiui'ims, Regan, Ann. Mag. N. H. (7) xvi. 11)05, p. 2^0. 

 I fab. L,\KE Nicaragua [Salviv). 



29. Ciclilosoma macracantliiis, Giinth., 1864. (Tab. V. fi--. i.) 



Cirliloso'ina macracuittliua (i)art.), Regan, Ann. Mag. N. 11. (7) xvi. 1905, p. 241. 

 llnh. GuATiiJiALA, nuainiichal and Chiapam [iSalv'nt). 



