KISHKKV BULLETIN: \'(>L. 81. NO. 4 



ment of width recorded in the original text were 

 transposed. 



Smith's (1869a) syntypes of Panopeus herbsdi var. 

 obesus from Aspinwall are actually P. lacustris, a 

 male, cl 21.3, cw 30.2, with left major chela, and an 

 immature female, cl 16.1, cw 23.2, with right major 

 chela. The carapace of each specimen, while some- 

 what inflated, shows the slight surface sculpture, 

 transverse lines of granules, granular frontal and 

 anterolateral slopes characteristic of P. lacustris, and 

 most noticeably its outstanding curved but pointed 

 anterolateral teeth, the third and fourth being most 

 characteristic; the first and second tooth are co- 

 alesced but well separated by a moderate notch, the 

 rather acute first tooth being one- fourth to one-third 

 as wide as the much more rounded second and 

 slightly exceeding it in each case. The front is fairly 

 prominent in both specimens and granular along 

 its edge. 



In both specimens, the molar teeth of the crushing 

 chela are strong, coalesced, broadened, raised, 

 bowed laterally from the longitudinal axis of the 

 finger, and opposed by a well- developed dactylar 

 tooth. In both specimens, the molar area of the fixed 

 finger is worn, noticeably so in the male. The minor 

 chela of the female is typical for a specimen of this 

 size, but that of the male is relatively slender, the 

 fingers somewhat more decurved than normal, and 

 the tip of the dactyl broken off. The right third walk- 

 ing leg of the female is missing and the left first 

 and right third to fifth walking legs missing in the 

 male. 



No color is evident except for the slightly brownish 

 gray fingers of the chelae, with their lighter tips and 

 tooth cusps, but the fingers of the regenerated minor 



chela of the male are darker than others. There is 

 faint indication of the reticulate color pattern on the 

 large chela of each specimen. 



Other remarks are given in the general discussion 

 below. 



Panopeus meridionalis new species 

 Figure 5 



Material examined.— USNM 99846, holotype male, 

 cl 19.4 mm, cw 26.9 mm, Montevideo and Punta Car- 

 retas, rock coast of Rio de la Plata, Uruguay; C. S. 

 Carbonell, 1955.— 191154. 2M, 4F; same lot of 

 specimens as above and considered as paratypes. 



Diagnosis. — Carapace relatively narrow, length 70.1- 

 74.0% width, x 71.7. Coalesced first and second 

 anterolateral teeth usually separated by very shallow 

 notch, tip of acute first tooth exceeding that of 

 second; third and fourth teeth strongly curved for- 

 ward, acute, anterior margin of each concave; fifth 

 much smaller than fourth, slightly curved forward. 

 Chelipeds finely granulate on upper surface of car- 

 pus and palm; lower outer surface of palms appearing 

 light colored in preserved material. Major chela with 

 teeth on fixed finger varied in size, one or more teeth 

 on fixed finger distal to level of basal tooth on dactyl 

 enlarged, with cusps raised above straight line drawn 

 between angle at juncture of finger with anterior 

 margin of palm and tip (= length of fixed finger); 

 cusps of teeth on fixed finger rather well separated, 

 not broad, seldom worn, their external faces not 

 flared or bowed outward but aligned along axis of 

 finger. 



FlCii KE o.—1'anapeus meridionalis. Holotype male 

 (USNM 99846); a. Carapace in dorsal view: h. Major chela 

 in frontal view; 10 mm indicated. 



872 



