108 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxi. 



52. SYMPHURUS JENYNSI Evermann and Kendall, new species. 



Phujuaia / Jenyns, Zool. Voy. Beagle, Pt. 4, Fish, 1842, p. 140, San Bias, coast 



of Patagonia. 

 ? Symphurus plngusla, Berg, Anal. j\Ius. Nac. Buenos Aires, lY (2d ser., I), 1895, 



p. 79 (Mar del Plata; Montevideo). 



Head G.66 in length without caudal; depth 3.71; eye 13 in head; 

 snout 1.33; D. 108; A. 93; C. 12; scales about 120. 



Body outline nearly straight from about the first third of its total 

 length to about the posterior two-fifths w^here it tapers to the base of 

 the caudal, differing in this respect from ,6'. plagusia, which begins to 

 taper at about the anterior third of the length. 



Teeth small, sharp, close-set, in several series in each jaw, on blind 

 side; no teeth on upper side; eyes close together, about on same line, 

 the lower, if either, slightly advanced; origin of dorsal fin about over 

 front of upper e^^e. 



Color (after preservation in formalin and later in alcohol), light yel- 

 lowish l)rown, with faint darker streaks along the rows of the scales; 



^pp^ 



Fig. 4.— Symphurvs jenynsi. (From the type.) 



body also with cloudings and irregular, clouded crossbars; dorsal and 

 anal dusky posteriori}^, caudal dusky. 



The single specimen in our collection differs greatly in several 

 respects from S. plagusla, hrisiliejisis, ornata, tesselata^ and all others 

 that have been included in the synon3"m3^ of S, ijlagusia. 



In shape and number of dorsal and anal ra3's our specimen resembles 

 xS'. nehulosus (Goode and Bean^), but it differs from that species in 

 having no teeth on the upper or ej'ed side. In S. nehulosus the teeth 

 are said to be equally developed on both sidetj. In S. nehulosus the 

 color is clouded, while in our specimen there are traces of clouded, 

 irregular crossbands. 



Tyjpe. — Cat. No. 555T3, U.S.N.M., a specimen T.18 inches long, prob- 

 ably from the market at Buenos Aires. 



Named for Rov. Leonard Jenyns, an excellent naturalist, who wrote 

 the report on the fishes collected by Charles Darwin during the memo- 

 rable voj^age of the Beagle around the w^orld. 



O'Aphoristia nebulosa Goode and Bean, Bull. Mus. Comp. Zool., XI, No. 5, 1883, p. 192. 



