AMERICAN ORTHOPTERA. 267 



Two specimens; $ and 9 (latter immature); San Carlos and 

 Turrialba, Costa Rica. (Schild and Burgdorf.) [U. S. N. M.] 



In the female the interspace between the eyes is twice the width 

 of that in the male. The only previous exact records for this specie- 

 are Atoyac, Vera Cruz and Tabasco, Mexico. 



Blattella briiiiiieriana (Saussure). 



1868, Blatta Brurmeriana Saussure, .Revue et Magasin de Zoologie, 2e ser., xx, 

 p. 98. [Mexico.] 



One male; Piedras Negras, Costa Rica. (Schild and Burgdorf.) 



[U. S. N. M.] 



Blattella titania n. sp. 



Type: S; Bartica, British Guiana. April 24, 1901. (R. J. 

 Crew.) [A. N. S. Phila.] 



Allied to P. brunneriana (Saussure), but differing in the larger 

 size, the greater interspace between the eyes (two-thirds instead of 

 about one half of the interspace between the antennal bases), the 

 presence of cross nervures in the anal field of the tegmina, the 

 greater number of branches (five instead of three) to the median 

 vein of the same, and the slenderer limbs. 



Size rather large; form elongate ovate; surface polished. Head with the 

 interspace between the eyes about two-thirds that between the antennal bases; 

 eyes acuminate pyriform, somewhat prominent: antennae exceeding the body 

 by about one-half the length of the latter. Pronotum transverse, subovate : 

 anterior and posterior margins truncate, laterals rounded, the postero-lateral 

 angles being obtuse; disk with a transverse shallow depression before the mid- 

 dle; lateral portions hardly deflected. Tegmina elongate, subequal, apex sub- 

 acuminate ; basal field occupying about one-third the total length ; median vein 

 with five distinct rami ; anal field pyriform, the five uervures contained therein 

 connected by cross-nervu res, spurious longitudinal nervures also present between 

 some of the larger nervures. Wings with the costal veins clavate ; ulnar vein 

 with five rami. Supra-anal plate sub-triangular, apex entire. Subgenita) plate 

 produced, the apex consisting of a rounded tubercle, flanked by a deep but nar- 

 row emargination, the lateral margin terminating at this sinus in the form of a 

 blunt tubercle, the appearance of the whole apex being rather tridentate. Cerci 

 moderately long, acuminate, depressed. Anterior femora bearing three median 

 and one apical large spine and a row of small proximal spines on the anterior, 

 and four spines on the posterior margin. Median femora bearing six spines on 

 the anterior, and four on the posterior margins. Posterior femora with four 

 spines on each margin. Posterior metatarsi over half again as long as the 

 remaining joints combined. 



General color ochraceous brown. Eyes rich wood brown ; disk of the pronotum 

 reddish ochraceous, the lateral portions and anterior margin pellucid. Upper 

 surface of the abdomen pale blackish-brown, the margins of each segment paler. 



TRANS. AM. ENT. SOC, XXIX. SEPTEMBER. 190* 



