[69] REVIEW OF THE LABROID FISHES. GG7 



of the Academy of Natural Sciences at Philadelphia, and three smaller 

 specimens taken by the Albatross at Bahia. 



It is the slenderest of the Scaroid fishes, recalling such forms as Hali- 

 choeres caudalis and Pseudojulis cali/ornicus. 



Genus XXVL— CALOTOMUS. 



Calotomus Gilbert, Proc. U. S. Nat. Mus., 1890 (xenodon). 



Type : Calotomus xenodon Gilbert. 



Etymology : KaX6q, beautiful ; rofio^ cutting. 



This genus is based on a large Scaroid of the eastern Pacific, allied 

 to Cryptotomus, but differing in the arrangment of the teeth. Some of 

 the East Indian species referred by Bleeker to Calliodon are probably 

 congeneric with Calotomus xenodon. 



ANALYSIS OF AMERICAN SPECIES OF CALOTOMUS. 



Common characters. — Teeth distinct, equal, imbricated in regular oblique rows in 

 both jaws, wholly concealing the dental plates to the anterior edge of which they 

 are affixed. Cutting edge of both jaws formed by the outer teeth, the dental plate 

 not reaching the edge and visible only from within. Lips double for a short distance 

 only. Scales of cheeks in one row ; lateral line continuous ; bases of dorsal and anal 

 with scaly sheaths; dorsal spines 9, soft, and flexible; gill membranes broadly 

 joined to the isthmus. 



a. Body deep, compressed, the depth 2^ in length; head 3£; snout short and con- 

 vex ; teeth pointed, arranged in quincunx order, the posterior face alone adnate 

 to the dental plate ; teeth equal and similar in both jaws, 3 to 4 in an oblique 

 series anteriorly; about 12 such series in the upper jaw and 14 in the lower; two 

 posterior canines in upper jaw, curved downwards and backwards ; 3 or 4 scales 

 on cheek ; four before dorsal ; scales 1^-25-7. D. IX, 10 ; A. Ill, 9. Dorsal 

 spines high and flexible ; caudal deeply lunate, the outer rays produced ; ventrals 

 short. Color mottled silvery, slaty, and brown, in indefinite pattern ; pectorals 

 dusky at base ; vertical fins mottled, the dorsal and anal black on basal half. 



Xenodon. 82. 

 82. CALOTOMUS XENODON. 



Calotomus zcnodon Gilbert, Proc. U. S. Nat. Mus., 1890 (Socorro Island). 

 Habitat. — Kevilla-Gigedos archipelago. 

 Etymology: Sev<5£, strange; ddoug, tooth. 



This species is known from two specimens, the largest 14 inches 

 long, taken by Dr. Gilbert at Socorro Island. 



Genus XXVIL— CALLYODONTICHTHYS. 



Callyodontichthys Bleeker, Versl. in Meddeel. Akad. Wetensch. Amsterd. Natuurk. 

 xii, Scar., 1861, 2. (flavescens=bleekeri). 



Type : Callyodontichthys bleekeri Steindachner. 



Etymology : KaX6q 9 beautiful ; Sdobc;, tooth ; «£0wc, fish. 



This genus contains a single species, of which but one specimen has 

 been made known. We have never seen it, and do not know whether 

 it is the representative of a distinct genus, or whether it be simply the 

 young of a species of Sparisoma. 



