AMERICAN ORTHOPTERA. 269 



This species is possibly identical with the form called vitrea by 

 Saussure, * which is apparently not the same as Brunner's species. 

 The form here described is very distinct from the latter. 



% . Form medium build, elongate ovate; surface polished. Head with the 

 interspace between the eyes less than that between the ocelli; antenna moni- 

 form, not of great length. Pronotum transverse subovate, the anterior and pos- 

 terior margins truncate, the laterals with a very broadly rounded angle; lateral 

 portions somewhat depressed. Tegmina elongate, about equalling the wings in 

 length ; basal field not exceeding one-third of the tegmina in length, and the 

 greatest width does not exceed one-fifth the total length of the same field ; costal 

 nervures numerous, oblique, parallel, becoming interlaced and ramose toward 

 the apex of the tegmina; discoidal field with the veins generally longitudinal in 

 disposition; anal field elongate pyriform, tbe apex rounded, the anal sulcus 

 meeting the margin of the tegmina at a right angle, veins little curved, sub- 

 parallel. Wings with tbe apex narrowly rounded, the anterior field being sepa- 

 rated by a comparatively deep emargination ; costal region considerably eruargi- 

 nate basally, the costal nervures about ten in number and very slightly enlarged 

 apically ; ulnar vein with four rami, the apical one rather indistinct; axillary 

 vein with three rami. Supra-anal plate broadly triangular, apically produced 

 into a superiorly carinate, rostrate process. Subgenital plate triangular, the 

 apical section bent upwards, styles short, clavate. Cerci very considerably sur- 

 passing the anal plates, acuminate. Anterior femora with five median and four 

 apical large spines on the anterior lower margin, the intervening space being 

 filled with minute spines. Median femora bearing seven large spines on the 

 anterior margin. 



J . Size medium ; form ovate. Basal area of the tegmina broader than in 

 the male, the length being about two-fifths that of the whole tegmen. Wings 

 with the ulnar vein with five rami, the axillary vein with the same number of 

 branches. Supra-anal plate of the same general shape of that structure in the male. 

 Subgenital plate sub-triangular, the apex truncate. Cerci exceeding the anal 

 plates in length, uniform for the greater part of the length, acuminate apically. 

 General color pale wood-brown, the disk of the pronotum ochraceous brown, 

 the lateral sections of the latter and the basal field of the tegmina sub-hyaline. 

 Eyes blackish brown. Under surface reddish brown. 

 Measurements : 



Length of body, . 



Length of tegmina, 



Greatest width of tegmina, . 



Length of pronotum, . 



Greatest width of pronotum, 



Two additional female specimens from the type locality have 

 been examined. 



Blattella spectativa n. sp. 



Type : $ ; San Carlos, Costa Rica. (Schild and Burgdorf.) 

 [Cat. No. 6936, U. 8. N. M.] 



* Miss. Scientif. Mex., Orth., p. 30, tab. i, fig. 8. 



TRANS. AM. ENT. SOC, XXIX. SEPTEMBER, 1903, 



