598 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 117 



Numerous males of E. parvipinne taken early in 1952 in a tributary 

 of the Yazoo River, Mississippi, have tubercles on the anal rays. 

 A 55 mm. male taken February 22 (USNM 196636), has tubercles on 

 the distal fourth of the first anal soft ray, the distal half of the second 

 ray, the distal half to two-thirds of rays 3-5, and the distal third of 

 rays 6-7. There are no tubercles on the anal spine or the last anal 

 soft ray. Males taken later in the spring (exact dates unknown) 

 have similar tubercle distributions, but the tubercles are larger and 

 extend farther proximally on the rays. (Some specimens from the 

 original collections, UM 47 and 521 A, have been recatalogued as 

 USNM 196636, 196637, UMMZ 162907.) Two 44 mm. males taken 

 March 7 (TNHC 2835, Texas, Montgomery Co.) have tubercles 

 developed on the distalA;half to three-fourths|'of all anal soft rays. 

 There are no pelvic or body tubercles on any of the specimens. The 

 belly and pelvic fins of the^females are immaculate.) These areas, 

 plus the anal and dorsal fins, are dark in the males. -l; Males taken 

 from April 4 to April 22 (UMMZ) lack tubercles. 



Bailey and Richards (1963) stated that breeding tubercles are 

 present on the lower surface of the pelvic fin, anal fin, and on the 

 ventral body scales of breeding males of E. hopkinsi. Richards 

 has very kindly called my attention to the only tuberculate specimens 

 he has examined. Males of E. hopkinsi binotatum Bailey and Richards 

 are tuberculate from as early as March 25 (CU 19604, S.C.) until 

 April 29 (UG 283, Georgia) in the Savannah River drainage. The 

 maximum development of tubercles is on a 39 mm. male collected 

 March 27 (CU 19600, South Carolina, Savannah Dr.) . A few tubercles 

 are present on the distal tip of the second anal spine and 5-10 promi- 

 nent tubercles are present on all the anal soft rays except the last 

 half of the last ray. Small but prominent tubercles are developed on 

 the ventral surface of the proximalfportion of pelvic soft rays 3-5. 

 Tubercles (and scales) begin halfway posteriorly from the pelvic 

 fins to the origin of the anal fin and extend onto 3-4 rows of scales 

 per side just anterior to the genital papilla. No tubercles are present 

 above the anal fin base or on the ventral surface of the caudal peduncle. 



Dr. Richards has also permitted me to examine the tuberculate 

 specimens he has found of E. Jricksium. A few very small tubercles 

 are on anal soft rays 3-6 of two males (CU 17375, Georgia, Savannah 

 Dr., 46-50 mm.) taken March 24. Tubercles are also present on the 

 anal rays of males taken in the Edisto drainage (CU 29850, South 

 Carohna, March 28). Additional tuberculate specimens are needed 

 to determine whether tubercles develop on the pelvic fins and venter 

 of E. Jricksium as they do on E. hopkinsi. If not, tubercle pattern 

 will be one additional difference between the two species which had 

 been confused until recently (Bailey and Richards, 1963). 



