1344 Bulletin 47, United States National Museum. 



lateral crest nowhere coalescing with the supraoccipital crest; inter- 

 orbital area flattiah, with two low ridges ; a small foramen in each of 

 these above front of pupil ; interorbital area much contracted anteri- 

 orly; a strongly projecting prefrontal process, which makes an acute 

 angle with the supraorbital. 

 d. Frontal bones partly porous and gibbous; antrorse dorsal spine at- 

 tached directly to the interneural; (third dorsal spine very long, 

 longer than head). Otrynter, 550. 



dd. Frontal bones not gibbous nor porous; antrorse dorsal spine attached 

 to the interneural by a long process or spur; (third dorsal spine 

 about half head). Stenotomus, 551. 



cc. Front teeth conical or canine-like ; first spine-bearing interneural without 

 antrorse spine; temporal crest very thin and high, joining the lateral 

 crest which forms part of the margin of orbit above middle of eye, 

 both crests coalescing with the supraoccipital in the cavernous anterior 

 part of the interorbital area; interorbital area somewhat contracted 

 anteriorly; prefrontal process very strong, making an obtuse angle 

 with the sujjraorbital, this process forming a conspicuous knob above 

 tlie long posterior nostril. Calamtts, 552. 



66. Second interbsemal spine normal, not "pen-shaped;" cheeks scaly. 



e. Front teeth conic, not compressed ; no incisors ; occipital crest coalescent 



with the temporal crests; no antrorse spine on first interneural; dorsal 



spines usually 11 to 13. 



/. Anterior teeth in both jaws strong, decidedly canine-like; body more 



or less deep and compressed. Sparus, 553. 



ee. Front teeth incisor-like ; no canines. 



(/. Incisors broad ; molars in 2 to 4 series in each jaw. 



h. First spine-bearing interneural witli an antrorse spine in front. 

 i. Supraoccipital and temporal crests nowhere coalescent, the 

 interorbital area not swollen; frontal bone in the inter- 

 orbital area thin, concave in transverse section; tem- 

 poral crest low, separated from supraoccipital crest by 

 a flattish area which extends forward on each side of 

 supraoccipital crest and to groove of premaxillary 

 spines. (Incisors conspicuously notched.) 



Lagodon, 554. 



a. Supraoccipital and temporal crests coalescent anteriorly, 



both disappearing in the gibbous interorbital area; 



frontal bone between eyes transversely convex and 



more or less honeycombed; temporal crest separated 



from occipital crest by an excavated area bounded 



anteriorly by the lateral crest, which merges into the 



supraoccipital above the eye. (Incisors entire or with 



a shallow notch.) Archosargus, 555. 



hh. First spine-bearing interneural without antrorse spine above ; 



skull essentially as in Archosargus, the frontal bone more 



cavernous. Diplodus, 556. 



550. OTRYNTER, Jordan & Evermann. 

 (Dekp-Watku Pokgies.) 

 Otrynter, Jordan &, Evermann, Check-List, 388, 1396 (caprhivs). 



This genus is allied to Calamus and Stenotomus, differing from the former 

 in its incisor-like front teeth, and from the latter in the structure of the 

 skull. Temporal crest rudimentary, persisting in a swelling of the hasal 



