156 PROCEEDINGS OF THE ACADEMY OF [May, 



appreciably narrower at a point slightly caudad of the middle, 

 Tegmina of the general dorsal color, very pale on the portion of the 

 dextral tegmen concealed when in repose; proximal section of the 

 humeral trunk blackish fuscous; marginal field pale ochraceous 

 translucent, proximad more or less suffused with the blackish fuscous 

 of the humeral trunk. Wings clear hyaline, except for a slight 

 infuscation of the sub-coriaceous region of the costal veins ; venation 

 pencilled in prout's brown. Dorsum of abdomen fuscous, paling 

 to bister along the median line; supra-anal plate of male with a 

 russet tinge, the characteristic Ischnoptera fold of the male ochraceous- 

 buff ; venter of abdomen becoming ochraceous-tawny meso-proxunad. 

 Limbs ochraceous-buff, the coxae fuscous proximad, spines tawny. 



Male (type): Length of body, 12.6 mm.; length of pronotum, 

 3; greatest width of pronotum, 3.6; length of tegmen, 11.9; greatest 

 width of tegmen, 3.7. Female (allotype) : Length of body, 13.5 mm. 

 length of pronotum, 3.2; greatest width of pronotum, 3.7; length 

 of tegmen, 12.3; greatest width of tegmen, 3.3. 



In addition to the type and allotype we have examined two para- 

 typic females, taken at Igarape-assu. One specimen, while of the 

 body bulk of the others, has the tegmina shorter (11.5). 



Xestoblatta" nyctiboroides (Rehn). 



1906. Ischnoptera nyctiboroides Rehn, Proc. Acad. Nat. Sci. Phila., 1906, 

 p. 266. [Demerara, British Guiana.] 



Igarape-assii. January 23, 1912. One male. 



This specimen, the second known of the species, fully agrees with 

 the original description except that the ulnar vein of the wings 

 has two complete rami on one wing and but one on the other, one 

 incomplete ramus on one wing and none on the other. 



Neoblattella conspersa (Brunner). 



1865. Ph[yllodromia] conspersa Brunner, Nouv. Syst. Blatt., p. 106. [Brazil.] 



Igarape-assu. December, 1911; January 13 to 25, February 6, 

 1912. Twenty-two males, twenty-five females. [Two: Cornell 

 University.] 



This interesting series shows that while the blackish punctulations 

 on the tegmina in this species vary greatly in number and intensity 

 they are never entirely absent, and are always placed on thickened 

 Ixodes on the veins. In the individuals with the greater number 

 of punctulations these are individually larger than in those specimens 

 with a considerably smaller number of the same. The pattern of 

 the disk of the pronotum varies in intensity and completeness pro- 



i< Vide Hebard, Trans. Amer. Entom. Soc, XLII, p. 370, (1916). 



