10 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.60. 



sixth article about twice as long as thick (pi. 4, fig. 8). Gnatho- 

 chilarium of male as shown in plate 4, figure 7. Collum with three 

 complete longitudinal ridges below and a fourth broader one cross- 

 ing only the caudal border above these (pi. 4, fig. 3). The second 

 and the immediately succeeding tergites strongly ridged beneath, 

 the ridging becoming weaker in going caudad. The oblique striae 

 across metazonites on median segments extend upon dorsum, the 

 two series almost in contact anteriorly, leaving a triangular mid- 

 dorsal area free from them posteriorly on each segment. Trans- 

 verse sulcus sharply impressed, angulate at dorsal line. 



The legs of first, second, and third pairs of male as shown in plate 

 4, figures 4, 5, and 6. 



Gonopods of male as shown in plate 4, figures 11 and 12. 



Sternites of ninth segment are represented in plate 4. figures 9 

 and 10. 



Number of segments, 44. 



Length, about 28 mm. ; width, 2.2 mm. 



Locality. — Honduras: La Ceiba, one male (W. M. Mann). 



Type.—C2ii. No. 819, U.S.N.M. 



The gonopods of the specimen are broken. 



18. PROSTEMMIULUS LOMBARDIAE, new sped**. 



Plate 5, figs. 1-4. 



Brown throughout, darker over dorsum, the usual two series of 

 paler spots along each side visible under lens, but no trace of mid- 

 dorsal pale line. Anal segment and collum not diiferently colored. 

 Legs yellowish, the antennae brown. Head with two ocelli on each 

 side, of which the lower or anterior is much the smaller. The an- 

 tennae are slender, with the sixth article nearly uniformly cylin- 

 drical, scarcely thicker distally than proximally and a little more 

 than twice as long as thick (pi. 5, figs. 1 and 2). Collum with three 

 longitudinal striae across ventral end, these setting off two ridges 

 much less elevated and sharp than the corresponding ones in relictus. 

 No striae above the uppermost of these three (pi. 5, fig. 1). Second 

 tergite striate beneath. Striae on succeeding tergites rising higher 

 and higher and first reaching the middorsal region on the twelfth 

 segment. Papillae of last segment 3-|-3, as usual, the setae moderate 

 in length. 



Sternites of form shown in plate 5, figures 3 and 4. 



Number of segments, 42. 



Length, 12 mm.; width, 1 mm. 



Locality. — Honduras: Lombardia, one female (W. M. Mann). 



Type.— Csit No. 820, U.S.N.M. 



