concentrations of smaller spots of dark pigment 

 frequently apparent on opercle and preopercle 

 and usually present in an area which extends 

 for a few scale rows above and below the an- 

 teriormost lateral-line scales. Specimens less 

 than ca. 80 to 90 mm. SL show a similar pattern 

 of pigmentation, but usually are more heavily 

 covered with the smaller spots of pigment, par- 

 ticularly on the head and dorsolateral surface of 

 the body. The dorsal fin shows considerable dark 

 pigment on most specimens less than ca. 100 to 

 110 mm. SL, mostly pale in larger specimens; 

 the caudal fin usually has some dark pigment in 

 specimens less than ca. 80 mm. SL, usually 

 straw colored proximally and pale distally in 

 specimens more than ca. 80 mm. SL; other fins 

 pale. (Pigment spots may be difficult to distin- 

 guish on some specimens without magnifica- 

 tion.) 



PREVIOUS REFERENCE TO 

 SYMPHYSA^0D01\ BERRYI 



In an earlier publication (Anderson, 1967) I 

 presented a key for the identification of two un- 

 described species of western Atlantic Symphy- 

 sanodon. The species designated as "Symphy- 

 sanodon sp. A" is S. berryi. 



SEXUAL DIMORPHISM 



The sex was determined on 108 specimens (56 

 males, 73-137 mm. SL, and 52 females, 67-123 

 mm. SL). The 52 males more than 84 mm. SL 

 and one of 73 mm. SL have the first pelvic soft 

 ray noticeably produced ; many males of more 

 than 100 mm. SL have the medial branch of the 

 first pelvic soft ray produced into a long filament 

 which reaches the base of the caudal fin or 

 beyond. Most males of more than 100 mm. SL 

 have the caudal fin lobes produced into long 

 filaments. None of the females have the first 

 pelvic soft ray or caudal fin lobes produced into 

 long filaments. In addition, the dentition is 

 better developed and coarser in males than in 

 females. Two specimens (105 and 125 mm. SL) 

 on which I was unable to determine the sex have 

 the first pelvic soft ray well produced and, thus, 

 may be presumed to be males. The other speci- 

 mens on which the sex was not determined are 

 small (49-83 mm. SL, most of them less than 

 70 mm. SL) . 



Sexual dimorphism was not observed in the 

 other characters studied. 



COMPARISONS 



Symphysanodon berryi may be separated 

 from S. octoactinus and S. katayamai by its 

 more slender body and by its shorter depressed 

 anal fin, from S. maunalox by its possession of 

 more pored scales in the lateral line, and from 

 S. typus by its usual possession of fewer pored 

 scales in the lateral line and by differences in 

 certain body proportions (see keys). The rela- 

 tion of numbers of total gill rakers on the an- 

 terior gill arch to pored lateral-line scales may 

 be used to separate specimens of S. berryi from 

 those of all other species of the genus except S. 

 katayamai (table 1). S. berryi seems to differ 

 from the other species of Symphysanodon (with 

 the apparent exception of S. maunalose) in ex- 

 hibiting pronounced sexual dimorphism. 



DISTRIBUTION 



S. berryi has been collected in the western 

 Atlantic oflT the Bahamas, Dominican Republic, 

 Puerto Rico, Tobago, Mexico, British Honduras, 

 Honduras, and Nicaragua in 120 to 260 fath. 

 (220-476 m.). Specimens of S. berryi were 

 collected at Pillsbury station 582. The depth data 

 for this station are 250 to 20 fath. (458-37 m.). 

 According to Thomas H. Fraser (in litt., April 

 22, 1968), Pillsbury station 582 was made going 

 up the slope at Arrowsmith Bank. The vessel 

 turned sharply in about 20 fath. and terminated 

 the tow in about 155 fath. (283 m.). The net 

 probably did not fish as shallow as 20 fath. 



One specimen of S. berryi was collected in 

 company with one of S. octoactinus at Gerda 

 station 693 off Grand Bahama Island in 160 to 

 150 fath. (293-274 m.). 



ETYMOLOGY 



This species is named for Frederick H. Berry, 

 who first brought it to my attention and who has 

 taught me, stimulated my interest, and en- 

 couraged me. 



MATERIAL EXAMINED 



I examined 136 specimens, 47 to 137 mm. SL. 



Holotype 



USNM 204086 (a male, 115 mm. SL), off 

 southern coast of Great Inagua Island, Bahamas, 



REVISION OF THE GENUS SYMPHYSANODON 



341 



