Vol. XXVlii] ENTOMOI.OCU'AL NEWS. 361 



notum extending considerably beyond the head in male, 

 leaving the vertex briefly exposed in female. Tegmina 

 present, reduced, with venation subobsolete, in male ; absent 

 in female. Wings greatly reduced in male, absent in female. 

 Cerci tapering to acute apex. Subgenital plate of male sym- 

 metrical, with similar, simple, straight, elongate, cylindrical 

 styles, situated in sockets latero-distad, with distal margin of 

 plate between these somewhat produced, convex. 3 Subgenital 

 plate of female valvular, with basal margins of valves straight, 

 convergent, to the rather broadly rounded apex. 4 Ventral fem- 

 oral margins unarmed, supplied with a few scattered hairs ; 

 median and caudal femora supplied with a rather delicate disto- 

 dorsal genicular spine. 5 Tibiae with external faces supplied 

 with numerous short bristles, median and caudal tibiae there 

 furnished with a few spines ; all of the tibiae armed with distal 

 spines. Tarsal joints elongate and slender, those of the caudal 

 limbs nearly equaling the caudal tibiae in length. Caudal meta- 

 tarsus fully as long as the remaining joints. Pulvilli and arolia 

 absent. 



Myrmecoblatta wheeleri new species. 



Compared with M. rchni, the male of the present species is 

 found to differ in the pronotum, with latero-caudal angles more 

 sharply rounded ; shorter and truncate tegmina ; more reduced 

 wings ; much shorter supra-anal plate and much shorter cerci, 

 with articulations subobsolete. From the single immature fe- 

 male of the present species before us we can only determine 

 that females of wlicclcri are separable from those of manni, 

 as are males, by the much reduced cerci, with articulations sub- 

 obsolete. 



TYPE: $ ; San Lucas Toliman, Solola, Guatemala. January 

 3, 1912. (W. M. Wheeler.) [Hebard Collection, Type No. 



44Q-] 



3 In these features showing considerable resemblance to the Cory- 

 cliine genera, Compsodcs and Latindia. These genera, in these respects, 

 showing a similarity to the normal Blattinid type. 



1 In this respect much closer to the normal V acute-angulate type 

 found in the Corydiinc genera, Holocompsa and Compxodcs. but show- 

 ing siime divergence toward the type normal in the Blattinae. 



1 Mann failed to note the absence of the genicular spine on the ce- 

 phalic femora, a condition found throughout the Blattidae. 



