508 TYPES OF FISHES IN PARIS MtTSEUM. 



peuna, tbe back with a regular arch. Ventrals dusky. A dark spot iu 

 axil of pectoral, as in C.jjenna. Scales 49. 



This species may be distinct, but it will probably be found insepara- 

 ble from Calamus penna. 



50. Sargus argenteus. (Cuv. & Val., vi, 60.) 

 Specimen from Brazil; Delalande; .15'". 



Tliis is identical with the )S'«/7/«s caudimacula of Poey, a species dis- 

 tinct from the Diplodus Jiolhrooki of Bean. 



]3epth 2 in length ; scales 8-70-16. 



Little or no black on opercular membranes. 



A specimen of this species fron Saint Augustine, Fla., was sent to 

 the museum of the Indiana University by Mr. W. P. Shannon. This 

 is the lirst I'ecord of its occurrence on the United States coast. 



The s{)ecies should stand as Diplodus argenteus. 



51. Sargus ascensionis. (Cny. & Val., vi, 61.) 

 Ascension Island ; Quoy & Gaimard ; .30"'. 



The type of this species much resembles Diplodus Jiolhrooli. 



Depth 2^ to 2f in length ; scales 8-61-16. 



Anterior profile steep. Black on the opercular membranes. Axil 

 dusky. No cross-bands. Dorsal, anal, and ventrals somewhat dart. 

 Anterior profile steep, the dorsal outline being more angular than in J). 

 argenteus^ the ventral outline less so. It should stand as Diplodus 



ASOENSIONIS. 



52. Sargus flavolineatus. (Cuv. & Val., vi, 60.) 



San lago de Cuba; Clioris; .26'" in length, in bad condition. 



Teeth broad and scarcely notclied. Incisors '•{. Procmnbent dorsal 

 spine scarcely evident. Second anal spine rery strong, much larger 

 and longer than third. > 



Head 3^ in length ; depth 2 Jj. 



Longest dorsal spine 1^ iu head. 



D. XIII, 11. A. Hi, 9. Scales 7-45-14. 



This species is very close to Diplodus unimaeulatus, but it seems to be 

 distinct, having the body deeper than in the latter. It should stand as 

 Diplodus flavolineatus. 



This species occurs in abundance at Key West, but the true Diplodus 

 unimaeulatus has not yet been definitely recorded from the coast of the 

 United States. 



53. Sargus aries. (Cuv. & Val., vi, HS, 1830.) 



Specimen .30™ long, from Brazil ; Delalande. 



This is very close to Diplodus prohatocephalus^ with seven dark cross- 

 bands, similar in position to those of the latter species. The teeth are, 

 however, distinctly narrower, the width of one being about two-fifths 

 its height, from the gums. Spines strong, the longest dorsal spine 1§ in 

 head. Second anal spine If. Procumbent spine before dorsal present. 



