I02 THE BLATTIDAE OF PANAMA 



Type. — 9 ; Porto Bello, Panama. March 2, 191 1. (A. Busck.) 

 [United States National Museum.] 



Size extremely large; form elliptical, depressed, relatively slender for the genus. 

 Surface polished. Head with occiput transversely evenly convex, interocular 

 space very broad, slightly broader than width between antennal sockets; ocellar 

 spots distinct; antennae elongate, not equal to body length. Maxillary palpi with 

 fifth joint not strongly enlarged, subequal in length to fourth; fourth about three- 

 quarters as long as third joint. 



Pronotum of the usual form for the genus; surface smoothly convex, briefly and 

 suddenly deflexed on either side of the head; caudal margin straight laterad, showing 

 a very feeble broad convexity mesad. Mesonotum with caudal margin much as 

 that of pronotum. Metanotum with latero-caudal angles slightly but appreciably 

 produced, sharply rectangulate, the lateral portions of the caudal margin resultantly 

 distinctly concave. Tegmina lateral, slightly surpassing the caudal margin of the 

 mesonotum, length of exposed portion one and one-half times greatest width; 

 costal margin very feebly convex, weakly cingulate, apex subrectangulate and 

 rather sharply rounded; sutural and distal margins regularly convex, the angle 

 formed by their juncture obtuse and broadly rounded. Wings absent. 



Abdomen elongate, scarcely broader than thorax and with surface very slightly 

 less convex; disto-dorsal abdominal segments with latero-caudal angles showing dis- 

 tmct but not pronounced acute projections directed caudad. Supra-anal plate partly 

 deformed. 122 Cerci fusiform; dorsal surface flat, showing the sutures of the joints 

 weakly; apex acute; ventral surface of (thirteen) joints strongly convex with lateral 

 margins narrowly but strongly cingulate, this greater for the external margins. 



Femora heavily spined as characteristic of the genus. Caudal tibiae elongate, 

 flattened, slender, unspecialized. Caudal tarsi very elongate; metatarsus slender, 

 approximating the combined length of the succeeding joints, ventral surface with 

 two rows of widely spaced minute spines, terminating distad at the moderately 

 large globose pulvillus; succeeding three joints with ventral surfaces fully occupied 

 by large pulvilli. Decidedly small arolia present between the bases of the tarsal 

 claws. 



Dorsal surface shining blackish with a ver>' slight brown tinge. Head the same 

 color, ocellar spots ochraceous-buft"; a small spot on either cheek, entire clypeus, 

 jaws and ventral half of labrum chestnut. Antennae in brief proximal portion 

 shining blackish with a very slight brown tinge, remaining portions dull bay. 

 Underparts, coxae and proximal portions of femora chestnut, becoming blackish 

 chestnut distad on abdomen and distal portions of limbs. Pulvilli ochraceous-bufl". 



Length of body, 49.2; length of head, 10.3; width of head, 9.2; width of interocu- 

 lar space, 5.9; length of pronotum, 13; width of pronotum, 19; exi)osed length of 

 tegmen, 6.7; width of tcgmen, 4.8; width across mesonotum and tegmina, 20.7; 

 ^ PVom the normal portion, apparent ly as in this sex of hioUeyi. 



