190 PROCEEDINGS OF THE ACADEMY OF [May, 



no noteworthy variation in structure and exhibits but a negligible 

 amount in size. A single female from Peixe Boi, east of Para, 

 State of Para, Brazil, (November to December, 1907; H. B. Merrill), 

 in the collection of the Academy, is inseparable from the typical 



Igarape-assu series. 



TETTIGONIID^. 

 Phaneropterinae. 

 Ceraia capra n. sp. (PI. II, figs. 36, 37.) 



While we have only the female sex of this species its description 

 is justified by the peculiar and unique form of the subgenital plate, 

 and also by the ambisexual characters separating it from the allied 

 species known only from the male. It is apparently nearest to 

 C. punctulata and dentata Brunner, but from the former it differs 

 in the annulate antennae, in the lateral lobes of the pronotum being 

 roundly inserted cephalad, in the greater number of spines on the 

 ventral margin of the caudal femora, in the metasternal lobes being 

 rounded instead of trigonal, in the ventral margin of the ovipositor 

 being crenulate but a short distance distad, in the deeply fissate 

 and bicorniform subgenital plate and in the somewhat greater 

 size. From deniaia the new form can be readily cUstinguished by 

 the angulate instead of rotundate mesosternal lobes. 



Type: 9 ; Igarape-assii, State of Para, Brazil. (H. S. Parish.) 

 [Acad. Nat. Sci. Phila., Type no. 5310.] 



Size moderately large; form well compressed; surface somewhat 

 polished. Head moderately arcuate, weakly elevated dorsad of the 

 general level of the pronotal disk; fastigium subhorizontal, narrow, 

 compressed, particularly proximad, sulcate, the apex faintly bulbous, 

 narrowly in contact with the compressed and slender facial fastigium; 

 eyes but moderately prominent when seen from the dorsum, basal 

 outline subcircular, the depth subequal to that of the infra-ocular 

 portion of the gense; antennae broken. Pronotum with the disk 

 deplanate dorsad, greatest caudal width of cUsk contained one and 

 one-third times in the greatest length of the same; cephalic margin 

 of disk emarginato-truncate, caudal margin strongly arcuate, form- 

 ing more than the quadrant of a circle; lateral angles of disk rounded, 

 broadly so cephalad, more narrowly so caudad; surface of disk hardly 

 punctulate cephalad, median figure broadly U-shaped, deeply 

 impressed; lateral lobes with their greatest depth distinctly greater 

 than the greatest length, cephalic margin appreciably sinuate, 

 ventro-cephalic angle very broadly arcuato-rotundate, ventral 

 margin broadly rounded subrectangulate, ventro-caudal section 



