STALK-EYED CRUSTACEA. 
ORDER PODOPHTHALMA. 
SusorpDER DECAPODA. 
Famity MAITID A. 
LEPTOPODIA Leacz. 
Zodlog. Mise., IT. 15, 1815. 
Leptopodia debilis Srn. 
Ann. Rep. Peabody Acad. Sci. for 1869 and 1870, p. 87, 1871. 
Two specimens, male and female, were collected at low tide on the reef 
at Panama, March 12. 
Leptopodia detilis is one of the many littoral Crustacea of Panama that are 
represented by very closely allied species on the Atlantic side of the Isthmus. 
It is distinguished from Leptopodia sagittaria (Fabr.), its Atlantic represen- 
tative, chiefly by its shorter hand, relatively longer fingers, and greater 
breadth across the branchial region of the carapace. The rostrum is usually 
shorter and inclined upward more than in ZL. sagittaria; but in the type 
specimen (M. C. Z. No. 3948, g, Polvon, Nicaragua), it is exceptionally 
long, — more than one and a half times as long as the rest of the carapace. 
In average specimens of Z. debilis the rostrum is about equal in length to 
the rest of the carapace. The difference in the form of the male abdomen 
in L. debilis and in Milne Edwards's figure of ZL. sagittaria (Cuvier’s Régne 
Animal, Disciples’ ed., Crustacea, Plate XXXVI. Fig. 1"), noted by Smith, 
arises from the inaccuracy of the figure, not from any real difference between 
the two species, which are alike in this regard. 
