proc?:eding8 (~>f united states national museum. 583 



times in snout. (Ireatest width of spiracle two-thirds eye; i)osterior 

 nmruin of spiracle with two folds. Nostrils about one-sixth wider than 

 the interspace ; anterior valve with a narrow wing-like niembrajie reach- 

 ini;- onter angle, the valve not reaching inner angle by nearly one-third 

 width of nostril. 



Mouth perfectly straight, the lower jaw with a very inconspicuous 

 pi(»iecti<)n, fitting into a slight emargination of the upper; width of 

 nioutli 2f times in distance to tij) of snout: teeth not pointed, in about 

 To vertical series in each jaw. 



Distance from snout to end of pectoral 2jf in total length ; distance to 

 vent, 2^ in total. 



Dorsals equal, the interval between them three-fourths length of 

 snout (to eye) ; their base one-half their height, which equals length of 

 snout and eye. Distance from first dorsal to root of ventrals, 1^- iu snout. 



Caudal broad and short, the two lobes of nearly equal width, the 

 upper pointed; posterior margin of fin obliquely truncate, without 

 norch ; upper lobe five-sixths length of snout. 



J^kiu very minutely granular : a group of six large tubercles at tip of 

 snout ; a series of smaller tubercles on anterior rim of orbit, and a few 

 on upper rim posteriorly ; a series of similar small tubercles, compressed, 

 and with backward-directed spine, running from head along median line 

 of back to dorsal ; those between dorsals obsolescent ; a single tubercle 

 on each shoulder. 



Sides of tail with a very conspicuous wide fold, extending to lower 

 lobe of caudal. 



A single specimen, a female, about 2 feet long, with five well-developed 

 young, was obtained (July 2G) in Charleston Harbor. This species is 

 Well k-nown to fishermen, but is said to be not abundant. 



10. Torpedo oocideutalis Storer. 



Traditions of the <?lectric fish l)eing taken at Charleston are current 

 among the fishermen. No specimens were seen, and the fish is doubt- 

 less rare. 



11. Pteioplatea inaclura, (Lc Siumu) M. & H. 



Abundant in the harbor, where numerous specimens were taken. 

 None of these had any trace of the caudal spine, though the largest seen 

 was 18 inches long. At what size, if at all, is the caudal spine devel- 

 0])e<l '} 



12. Trygon sabina Le Sueur — Sting Rat/. 



Agreeing well with Garraau's account of the species (in J. & G., Syn. 

 Fish. N. A. 68), but with the snout somewhat produced and acute. Teeth 

 about If, those in sides of upper jaw enlarged. Width of mouth equal- 

 ing that of interorbital space ; nasal flap broadly concave behind. Length 

 of disk greater than its width, contained 1| times in length of tail. Cau- 

 dal spine long, nearly equaling snout ; a short, rather high, cutaneous 



