174 S. I. Smith on American Crustacea, 



acutely pointed, slightly detlexed, and the prehensile edges minutely 

 dentate. There is a small tuft of dense pubescence on the inferior 

 edge of the propodal finger near the base. 



The ambulatory legs are slightly hairy along the edges, and the 

 meri, carpi, and propodi are somewhat compressed. In the first, sec- 

 ond, and third pairs, the dactyli are smooth, naked, and divided half- 

 way to the base; the divisions are cylindrical, acutely pointed, 

 slightly curved, and the anterior one of each leg somewhat longer 

 than the other. In the posterior pair, the dactyli are nearly straight, 

 slightly compressed, sulcate above and below, and naked. 



The first and second segments of the abdomen are narrower than 

 the third and are completely anchylosed, but the suture which sepa- 

 rates them is slightly shown for a little space in the middle and each 

 side. The succeeding piece, composed of the third, fourth, fifth, and 

 sixth normal segments, is slightly expanded at base, considerably con- 

 tracted at the distal end, and does not show the slightest trace of any 

 sutures. The terminal segment is small and forms a nearly equilate- 

 ral triangle. 



The appendages of the first segment reach almost to the terminal 

 segment, they are straight for the basal two-thirds, and the terminal 

 portion is turned sharply outward at an obtuse angle. The basal por- 

 tion is hairy along the outer edge, and the terminal portion, on both 

 edges. 



The color, in alcohol, is dirty white, the carapax marked with ii-reg- 

 ular, transverse bands of purplish brown, and the divisions of the 

 dactyli in the first and third pairs of ambulatory legs tipped with 

 dark brown. 



Length of carapax, 4*7"""; breadth of carapax, 5'1'""'; ratio of 

 length to breadth, 1 : 1'08. 



Collected at Panama by F. H. Bradley. 



Unfortunately only a single specimen was sent home by Mr. Brad- 

 ley, and on this account, as well as from the minuteness of the species, 

 the description is not so complete as might be wished. Although so 

 small, the integument is firm and indurated, and the sexual organs are 

 fully developed, so that it is evidently an adult. The structure of the 

 endostome shows a very remarkable approach to the Oxystomata. 

 The efferent canals do not, however, issue in a deep and narrow median 

 opening as in that group, but seem to be spread out over the whole, 

 broad, concave surface of the endostome, while the external maxilli- 

 peds retain the form peculiar to the Pinnotheridse. The form of the 



