514 bulletin: museum of comparative zoology. 



Head and anterior portion of body broad. Head anteriorly semicircu- 

 larly rounded. Widest near caudal end of frontal region from where the 

 sides are straight and converge very slightly caudad to the oblique 

 caudal corners. Caudal margin straight. Frontal suture not present; 

 1.45 times longer than wide. Basal plate 3.4 times wider than long. 



Antennae very short, pointed; only about 2.2 times longer than the 

 head. The ultimate article moderately short, distally rounded, only 

 three fourths as long as the two preceding articles taken together. 



Claws of prehensors when closed reaching or nearly reaching the 

 distal end of the second antennal article. Claw at base with a stout, 

 conical, black tooth. Intermediate articles unarmed. Femuroid 

 near distal end with a stout rounded pale process of the usual type. 



Anterior margin of prosternum with a median sinus which is shallow 

 and semicircular; on each side of sinus an obscure low nodule or tooth. 

 Sides nearly straight back to the rounded caudal corners; a little con- 

 verging caudad. Exposed part of prosternum 1.24 times ^dder than 

 median length; 1.64 times as long as the greatest length of femuroid. 

 Densely and rather coarsely punctate. 



Dorsal plates deeply bisulcate, with a mostly equally well-im- 

 pressed median longitudinal sulcus; a sharply impressed transverse 

 sulcus across plate a little caudad of its middle. 



Last dorsal plate broader, largely concealing the coxopleurae in 

 dorsal view; shield shaped with the caudal end truncate and the 

 anterior margin also straight. Wider than long in ratio 5 : 4. 



All prescuta short, those of anterior region extremely so. 



Ventral plates with a deep median longitudinal sulcus which is 

 deepest at middle of its length; this crossed behind middle by a weaker 

 transverse sulcus. 



Last ventral plate narrow and long; its sides straight, strongly 

 converging caudad; anterior margin convex; caudal margin also, 

 but weakly, convex. Anteriorly the plate is twice as wide as across 

 caudal end or nearly so; about three fourths as wide as Jong. 



Ventral pores nmnerous; chiefly in a transverse caudal band more 

 or less clearly divided at middle line; a smaller area toward each 

 anterior corner, 



Coxopleurae moderately inflated; not unusually elongate. Densely 

 porose as usual. 



First spiracle much the largest, vertically elongate, subelliptic; 

 others circular, decreasing caudad. 



Anal legs much longer than the penult; slender. Last tarsal 

 article long and slender. 



Pairs of legs 55. 



Length near 26 mm. 



Locality.— Cuba: Monte Verde. Type, M. C. Z. 1726; one 

 specimen. 



