12 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 93 



base is a fine, sharply impressed line occupying more than half the 

 total width of the telson. Inner uropod narrow, a shade more than 

 twice as long as its greatest width measured on, and at right angles to, 

 the median axis drawn from articulation to apex of the blade. Basal 

 joint of uropod armed with a sharp, stout spine ; there is a similar but 

 even longer spine near the proximal end of the inner border of the 

 outer uropod, forming with the blade a notch into which the outer 

 margin of the inner blade snugly fits. 



Holotype. — U.S.N.M. no. 69363, male, taken from a brackish pond 

 at Montego Bay, Jamaica, by C. B. Wilson, June 29, 1910. It measures 

 (in millimeters) approximately 73 long, tip of rostrum to end of 

 telson ; somewhat broken carapace about 18 ±, abdomen and telson 55, 

 telson 6 long by 7.5 wide. Large chela, lower border of palm to tip 

 of fixed finger 21, upper border 13.5, dactylus 12.5, width of palm at 

 middle of length 12.5, upper border of carpus 12.5, width 12.5, upper 

 border of merus 13.7, ischium 11. Small chela, lower border of palm 

 to tip of fixed finger 16, upper border 6.1, dactylus 12.5, width 8.3, 

 carpus 7.2 long, width at middle of length 6.^, length of merus 8, 

 ischium 8. 



A smaller specimen of about 61 mm in length, also from Montego 

 Bay, taken on June 24 of the same year by Dr. E. A. Andrews, likewise 

 from a salt-water pond, is like the type in all particulars, except in the 

 ventral armature of the merus of the large cheliped, which is five- 

 instead of seven-toothed toward the distal end of the joint. The fine, 

 sharply impressed line across the midportion of the base of the telson 

 is present, but does not extend as far to either side as in the type. 



CALLIANASSA JAMAICENSE var. LOUISIANENSIS, n. var. 



From Grand Isle, La., comes another specimen very similar to the 

 preceding, which I should almost have been tempted to describe as a 

 distinct species but for the fact that its larger right hand shows some 

 evidence, though slight, of having been injured. For the present at 

 least it had best be considered as no more than a varietal form. There 

 is only a single male specimen taken by Chenier Ronaville, July 18. 

 1928. 



Type. — LT.S.N.M. no. 69364. The description of the type of the 

 species proper as regards carapace, rostrum, and frontal appendages, 

 about fits the variety ; the eyestalks, however, have a very pronounced 

 ttibercle on the inner margin, whereas only a suggestion of one was to 

 be seen in the type of the species. It was only mentioned in con- 

 nection with the type, because a very definite though small tubercle is 



