ART. 13. ANTS FROM HONDURAS AND GUATEMALA MANN. 



is larger and the thorax bears prominent tubercles at sides and one at 

 the middle of pronotimi and lacks the longitudinal margins of cos- 

 tatua. 



CYPHOMYRMEX RIMOSUS (Spinola). variety MINUTUS Mayr. 



Honduras: Ceiba, Lombardia, San Juan Pueblo. San Pedro Sula, 

 Tela. 



MYRMICOCRYPTA CUCUMIS. new species. 



Worker. — Length 2.50 mm. 



Head, excluding mandibles, slightly longer than broad, sides feebly 

 convex, posterior corner- rounded, border concave. Mandibles 8- 

 dentate. Clypeus little convex, nearly straight at anterior border. 

 Frontal lobes thin, their outer borders rounded. Frontal carinae 

 feeble, nearly .straight, divergent, extending nearly to occipital bor- 

 der. Cheeks with a sharply defined, straight carina extending in- 

 wardly to the eyes, from near base of mandibles a little less than half 

 the distance to occipital borders. Antennal scapes surpassing occi- 

 pital corners by a distance a little greater than their diameter at tips; 

 first funicular joint one and one-half times as broad as the second 

 and as long as the second and third together, joints 2-8 slightly longer 

 than broad, penultimate joint less than half as long as the terminal. 

 Eyes moderate in size and convex, situated in front of middle of sides 

 of head. Thorax stout, the sutural impression broad and shallowly 

 concave and not interrupting the sculpture. Pronotum flat and slop- 

 ing in front, the posterior portion a very transverse area, convex at 

 middle and nearly flat at sides, separated from the front by a row 

 of short spines ; humeri angulate and shortly spinose ; inferior angles 

 with a short, blunt, downward-pointing spine. Mesothorax nearly 

 flat in front and slightly sloping from front to rear, behind more 

 strongly sloping. Epinotum anteriorly with a slightly convex sur- 

 face that is twice as broad as long ; the posterior portion in the same 

 plane as the declevity, thinly margined at sides; at middle with an 

 elongate, bluntly pointed spine that points upward and backward. 

 Petiole short, not pedunculate, in profile but slightly longer than 

 high and thinner behind than in front; from above as long as broad. 

 Postpetiole twice as broad, twice as thick and two and one-half times 

 as long as the petiole ; in profile longer than broad, highest in front, 

 with a feebly convex anterior surface which broadly rounds into a 

 long, flat posterior surface; from above, a little longer than broad, 

 broadest at middle, anterior border narowly rounded, sides feebly 

 convex. Gaster in profile thick, the sides obsoletely margined; from 

 above the sides of the first segment are nearly parallel. Legs long and 

 rather slender. 



Mandibles sublucid, rather strongly striate and with a few stiff 

 hairs. Head and body densely grnnulosely punctate and in addition 



