Jorda7i aiid Evcrmann . — Fishes of North America. 2839 



continuous with keel on snout; a strong supraocular ridge, beginning 

 opposite posterior end of nasal keel and continuing backward witb 1 

 biatus upon upper edge of opercle; .just below tbis on tbe opercle another 

 longer but scarcely stronger ridge ; another short ridge on anterior part 

 of opercle at level of lower part of eye ; opercles very convex, as if swollen 

 outward; keels on body and tail all strong; the 2 lateral keels on body 

 terminating on third caudal ring; the 2 lateral keels on tail beginning on 

 tlie hist body ring, thus overlapping the body keels; median keel on side 

 well develoiied, terminating on sixteenth body ring; ventral keels strong; 

 abdominal keel very strong. Egg sac on tirst 1^ caudal rings. Color yel- 

 lowish brown, with darker punctulatioiis ; tip of snout white; cheek, 

 throat, and under parts of snout white, crossed by about 7 or 8 irregular 

 brownish bars extending downward and backward; opercles brown; fins 

 pale. This species is related to C. albirostris of Heckel, differing from it 

 chiefly in the shorter snout, smaller dorsal, and fewer rings. Key West, 

 FloiJda. {<ayoruii», of the Keys; from Cayo Hueso, Bone Key, the original 

 Spanish name of the ishxnd of Key West.) 



Corythoichthyi cayorum, Kvermann & Kendall, Bull. IT. S. Fish Coram. 1897 (Feb. 9, 

 1898), 128, pi. 7, tig. 7, near Crawfish Bar, Key West, Florida. (Type, a male 3J 

 inches long, No. 48784. Coll. Drs. Evermann & Kendall.) 



Page 774. Syngnathus cequoreus is doubtfully American. Until a com- 

 parison of specimens can be made our species may stand as — 



1138. SYXtJNATHlS HECKELI (Kaup). 



Page 792. Lethostole, Jordan & Evermann, is identical with Cliirostoma, 

 and the definition assigned is that of Chirostoma. 

 To the synonymy of Chirostoma estor add : 



Atherinichthys albus, Steindachner, Anzelger der Kais. Akad. Wiss. Wien, 1894, 148, 

 Lake Patzcuaro, Mexico. (Coll. Princess Thcresc von Baycrn.) 



Page 793. In Chirostoma humholdtianum the scales are serrulate. After 

 this species insert the following: 



1155(a). CHIROSTOMA GBANDOCULE (Steindaclmer). 



Head 4; depth 5|; eye 3| in head; interorbital width -lA; pectoral fin lA ; 

 ventral 2-]-; caudal Ij';; anal base 1^, its greatest height 1|. D. V-I, 10; 

 A. I, 20; P. 15 or 16; scales 60 to 62-15 or 16. Upper profile of head merg- 

 ing gradually into that of 1iack, rising slightly toward beginning of second 

 dorsal. Lower jaw slightly projecting ; posterior end of upper jaw reach- 

 ing eye. Teeth on maxillary sharp, brush-like, in 3 or 4 rows, the inner 

 teeth of the maxillary and the outer teeth of lower jaw somewhat enlarged 

 and close set. Cheek narrower than in C. humholdtianum and C. estor, and 

 with 4 rows of scales. Origin of first dorsal undway between anterior bor- 

 der of eye and base of caudal, the second dorsal 4 diameter of eye nearer 

 base of caudal than hinder border of eye; greatest height of second dorsal 

 scarcely greater than base of fin. Longest anal ray about I3 in base of tin ; 

 dorsal and anal concave on free border; origin of anal nearly an eye's 

 diameter in front of that of second dorsal ; caudal deeply incised, the mid- 



