1918.] NATURAL SCIENCES OF PHILADELPHIA. 157 



portionately with the tegminal punctulations, in occasional specimens 

 being obsolete or completely absent. The pale transverse line 

 ventrad of the eyes varies considerably in degree of definition, but 

 this is not correlated with the variation in intensity of the dorsal 

 surface. The ventral surface of the abdomen is always marked 

 by a medio-longitudinal bar of blackish brown, this varying individ- 

 ually in width and to a less extent in distinctness. 



As one of the females bears an oStheca we know that in the 

 present species the egg-case is carried vertically with the suture 

 dorsad. 



Neoblattella titania (Rehn). 



1903. Blatella titania Rehn, Trans. Amer. Entom. Soc, XXIX, p. 267. 

 [BartJca, British Guiana.] 



Igarape-assu. One female. 



This individual fully agrees with the type. 



Neoblattella pellucida (Burmeister). 



1838. Bl[atta]pellucida Burmeister, Handb. der Entom., II, abth; II, pt. 1, 

 p. 498. [Pard, Brazil.] 



Igarape-assu. January 13 to 25, 1912. Two males, three females. 



Cariblatta igarapensis n. sp. (PI. I, figs. 15-18.) 



Closely related to C. fossicauda^'" Hebard, differing in the larger 

 size (this species being the largest of the genus), more elongate teg- 

 mina and in the form of the subgenital plate of the male; this of a 

 similar type in which the dextral portion is but weakly produced, the 

 sinistral portion alone markedly projecting. In the female the distal 

 portion of the subgenital plate is less strongly produced than is normal 

 for the genus, but the apex is broadly rounded, not appearing at all 

 bilobate. 



Type: cf ; Igarape-assu, State of Para, Brazil. (H. S. Parish.) 

 [Acad. Nat. Sci. Phila., Type no. 5237.] 



Size relatively large (for the genus): form as usual in the genus: 

 surface moderately polished. Head for its whole width visible 

 eephalad of the pronotum; occipital line, when seen from the dorsum, 

 straight; interspace between the eyes broad, the breadth subequal 

 to the greatest depth of the eye, and slightly less than the distance 

 between the ocellar spots; ocellar spots small, oblique, ovate: third 

 joint of palpi elongate, simple, faintly arcuate; fourth joint very 

 faintly shorter than the third joint, regularly though not greatly 

 expanding distad; fifth joint slightly shorter than the fourth joint, 

 moderately inflated, the flexor margin, when seen from the side, regu- 



15 Trans. Amer. Entom. Soc, XLII, p. 177, pi. XI, figs. 13 to 17, pi. XII, fig 

 17 and 18, (1916). 



