tures of 48, 58, 61, and 62° F. (8.9, 14.4, 16.1, and 

 16.7° C). Specimens are most often taken singly. 

 Our largest sample has six individuals. A. georgei 

 has been taken with hi'ucei and with steivarti. 



Name 



Named for George Clipper, to whom we are in- 

 debted for efficient assistance in this Laboratory. 



Study Material 



All from the Atlantic. Holotype: USNM 203016, 

 125 mm. standard length, Oregon 3622, 16°01' N., 

 81°08' W., 145 to 150 fm. (265-274 m.), June 6, 

 1962. Paratypes: 



Bahama Batiks. — FMNH 65791 (1 specimen), 

 Oregon 1343, 22°59' N., 79°17' W., 250 fm. 

 (457 m.). TABL 100575 (1), Silver Bay 2457, 

 23°43' N., 79°07' W., 250 fm. (457 m.). FMNH 

 66217, Combat 446, 25°10' N., 79°13' W., 250 fm. 

 (457 m.). UF 1350 (1), Combat 235, 27°27' N., 

 78°58' W., 180 fm. (329 m.). USNM 158689 (1), 

 Combat 237, 27°28' N., 78°44' W., 215 fm. (393 m.). 



U.S. Atlantic.— TABL 100563 (4), Combat 441, 

 25°16' N., 80''00' W., 185 fm. (338 m.). TABL 

 100569 (1), Silver Bay 2482, 26°07' N., 79°12' W., 

 200 fm. (366 m.). TABL 100567 (1), Silver Bay 

 218, 29°38' N., 80°11' W., 220 fm. (402 m.). 

 TABL 100573 (5), Combat 491, 29°30' N., 80°10' 

 W., 125 fm. (229 m.). 



U.S. Gulf of Mexico.— UMML 2882 and 2545 

 (1 each) ; Combat 281, 24°17' N., 82°47' W., 215 fm. 

 (393 m.). 



Central America.— USNM 187841 (5), Oregon 

 3579, 12°26' N., 82°26' W., 125 fm. (229 m.). 

 USNM 203017 (4) and MCZ (2), Oregon 6423, 

 13°28' N., 82°01' W., 150 to 158 fm. (274-289 m.). 

 USNM 187839 (6), Oregon 3566, 14°10' N., 

 81°58' W., 150 to 160 fm. (274-293 m.). USNM 

 188224 (4), Oregon 3622, data as for holotype. 

 USNM 187834 (3, 1 cleared and stained), Oregon 

 3625, 16°26' N., 8r35' W., 120 fm. (220 m.). 

 ANSP 98604 (4), Oregon 3626, 16°45' N., 81°27' 

 W., 150 fm. (274 m.). 



>*a-^' 



Antilles.— VSNM 187816 (2); Oregon 3548, 

 17°53' N., 77°56' W., 150 fm. (274 m.). TABL 

 100572 (S); Silver Bay 5193, 18°16' N., 67°22' W., 

 150 fm. (274 m.). FMNH 66224 (1); Oregon 2606, 

 18°37.5' N., 65°04' W., 210 fm. (384 m.). USNM 

 157980 (1); Oregon 1344, 22°50' N., 79°08' W., 

 200 to 225 fm. (366-412 m.). USNM 157976 (1); 

 Oregon 1343, 22°59' N., 79°17' W., 250 fm. 

 (457 m.). 



ARGENTINA STEWARTI, NEW SPECIES 



Figures 2, 3, 4, 5, 8, 9, lOB, 12 

 Diagnosis 



This species can be separated from A. sphyraena 

 and sihis by its smooth instead of spiny scales and 

 by its five instead of six branchiostegal rays. It 

 differs fi'om silu.s, siaUs, aliceae, and elongata in 

 having 6 (occasionally 7) gill rakers on the lower 

 arm of the first arch — the four species listed above 

 have 8 to 21. It differs in gill raker count from A. 

 hnicei which has 7 (occasionally 6) rakers. A. 

 steioarti differs from siall.^, aliceae, kagoshimae, 

 eucJvm, striata, georgei, and bnwei in having 52 

 or 53 vertebrae — the others have 43 to 51. It dif- 

 fers from sphyraena, sialis, elongata, australiae, 

 and kagoshimae in having 18 to 21 pectoral rays 

 rather than 11 to 17. It diffei-s from sphyraena, 

 sialis, aliceae, elongata, kagoshimae, and euchus 

 in having 13 to 15 ventral rays rather than 10 to 12. 

 It differs from striata in lacking silvery pigment 

 on the swimbladder (occasionally lacking in stri- 

 ata) and in its more slender body, depth usually 

 10 or more times in standard length rather than 

 usually less than 9 in standard length in striata. 

 It differs from georgei in having anal rays 12 or 

 13 rather than usually 10 or 11 and in liaving pec- 

 toral rays usually 19 or more, rather than usually 

 18 or fewer. 

 Counts 



See tables 1 to 6. 





'^^^" 



FiQUBE 12. — Ai-gentina stewarti, USNM 202998, para type, 148 mm standard length. Scales not shown. Cross section from 



in front of dorsal fin. Drawn by Mildred H. Carrlngton. 



ADDITIONS TO A REVISION OF ARGENTININE FISHES 



29 



