26 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. oo. 



Locality. — Guatemala : Cacao, a male and two females, April, 1906 

 (probably collected by O. F. Cook). 



Type.—C2ii. No. 832, U.S.N.M. 



64. OXYPYGIDES LAPIDICINA, new species. 



Plate 11. figs. 3-7. 



Segments black in front of the suture, behind which they are 

 ferruginous or ferrugino-fulvous, with border commonly paler. Legs 

 and antennae brown. Head smooth and shining, a few very fine 

 oblique striae on each side of vertex and frons. Sulcus distinct across 

 vertex and down clypcus, interrupted in frontal region. The collum 

 is widely rounded below in the usual manner. A margining sulcus 

 below and usually a little way up the caudal corner, but not extend- 

 ing about the anterior corner. Second tergite extending much be- 

 low level of collum, as in incKHe^. A prominent ridge extends from 

 the anterior lower corner ventrad and then caudomesad on ventral 

 surface, a deep pit lying caudad of its mesal end. Segmental sulcus 

 deep entirely across dorsum, passing below on each side into a shal- 

 low furrow marked with imj^ressed pits and short lines. Segments 

 in general striate only ventral !y. Sulcus deep and continuous across 

 dorsum, as well as down sides, straight opposite pores. The pores 

 high up. Scobina with anterior impression wide and weakly curved. 

 the ends not bent back, the indicated outline narrowly elliptic; the 

 striate posterior portion short, scarcely exceeding the anterior part 

 (pi. 11, fig. 5). The anal tergite bluntly rounded behind, much 

 exceeded by the valves. Anal valves with mesal margin strongly 

 elevated. The caudal process well removed from {^audal end of 

 tergite, rather short, distally narrowly rounded (pi. 11, fig. 3). 



Anal scale as shown in plate 11, figure 4. 



Gonopods of male much shorter and smaller than in ynesUes^ not 

 or ]jut little extruded and not crossing each other. Telopodite of 

 form ver}^ different from that of genotype (pi. 11, figs. 6 and 7). 



Number of segments, 52 to 54. 



Length, male, 53 mm.; width, 5.5 mm. 



Locality. — Guatemala : Candalaria Rocks, Scamay Estuary, one 

 adult male and an immature male and female (O. F. Cook, June. 

 1904). 



Type.—C?ii. No. 833, U.S.N.M. 



Two other females from the same locality may be the same species, 

 apparently differing in no respect excepting in materially greater 

 size, the length of the larger of the two being 83 mm., with a width 

 of 8.5 mm. A similarly large female agreeing with these two was 

 taken at Semacoch, Guatemala, by G. P. Goll, April, 1905. 



