260 



Mr. C. T. Regan on 



wliich is truncated Jlstally, where it. joins tlie cleitlirum above 

 the sympliysis ; 4 radials, the lower rather strongly enlarged 

 and with large foramina between them, the lowest and part of 

 the next inserted on the hypocoracoid. Pelvic bones elongate. 

 Vertebree 26 to 35 ; ribs and epipleurals inserted together, on 

 parapopbyses when these are developed. 



Five families may be recognized, and their relations may 

 be expressed thus : — 



Haploclactylidte. 



Chironemidse. 



Latrididfe. 



Chilodactylidee. 



Cirrliitidas. 



1. Cirrhitidae. 



Dorsal X 11-14. Anal Til 6-9. Simple rays of the 

 pectoral more or less thickened and produced. Mouth 

 terminal, protractile ; villiform teeth in jaws and on vomer, 

 sometimes on palatines ; jaws formed as in the Serranidse, the 

 prainiaxillary rami with posterior expansions, the maxillaries 

 exposed, broadest distally. A broad subocular shelf. Occi- 

 pital crest moderate, comn-.encing behind or above the poste- 

 rior part of the orbit; parietal crests feeble or absent; 

 frontals with well-marked supraorbital flanges. Vertebrae 

 26 to 28 (10 4-16-18); pveecaudals with parapopbyses from 

 the fourth or fifth ; 1 to 3 ribs sessile. _ 



Genera : Isohvna, CirrJu'feSj Cirrliitkldhys, Oxi/cirrhites. 



2. Chironemidae. 



Dorsal XIV-XV lG-18. Anal III 6-7. Villiform or 

 conical teeth in jaws and on vomer. Praemaxillary rami 

 with posterior expansions vestigial or absent ; maxillary with 

 a strong posterior expansion just below its palatine articula- 

 tion. No subocular shelf. Occipital crest very short, deve- 

 loped only on the posterior surface of the skull ; no parietal 

 crests. Vertebrae 33 (13-1-20); prjecaudals witii para- 



