AMERICAN ORTHOPTERA. Zo 



Allied to M. laneeolatum Burmeister, but differing in the much 

 more lanceolate elytra. 



Size rather large. Head rather broad; vertex thick, the fastigium slightly 

 expanded, rounded, about twice as wide as the first antennal joint; eyes large, 

 subglobose; antennae filiform. Pronotum rather broad ; lateral borders rounded, 

 slightly marked posteriorly; anterior margin truncate, posterior arcuate ; lateral 

 lobes very deep, the anterior border straight, lower margin sub-rotundate. Teg- 

 mina elongate, the tympanum occuping a relatively small portion of the posterior 

 margin, the sutural part of which is straght; lower margin gently arcuate, apex 

 rounded ; median vein separating before the middle of the elytra, and with both 

 forks reaching the sutural margin ; marginal field hasally quite broad, the basal 

 portion of the margin ornamented with a series of small callous nodules. Wings 

 large, considerably exceeding the tcgmina in length. Anterior and median femora 

 smooth, sulcate below; tibiae slender, the lower margins spined, the median pair 

 bearing several spines on the upper margin also. Posterior femora elongate, the 

 enlarged basal portion tapering very gradually into the slender distal portion, 

 sulcate below, the apical portion carrying about six spines on each margin, gen- 

 icular lobes bispinose ; tibiae quadrate, longer than the femora, strongly and 

 closely spined on all the margins. Subgenital plate rather elongate, keeled, the 

 extremity developed into a pair of forcep-like processes, touching by their tips,* 

 the enclosed space being marginally truncate. 

 Measurements : 



Length of body 26.5 mm. 



Length of pronotum 

 Length of tegmina . 

 Greatest widtn of tegmina 

 Length of posterior femora 



7.2 mm. 

 47. mm. 

 11.5 mm. 

 27.5 mm. 



Microceutrmii reliuerve (Burmeister). 



1838, Ph[ylloptera] retinervis Burmeister, Handb. der Ent., ii, p. 692. 



One male ; Teocelo, Vera Cruz, Mexico. September. Collected 

 by Otis W. Barrett. 



Microceutrum laurifolium (Linnaeus). 



1758, [Gri/llus] laurifolius Linnaeus, Syst. Nat., x ed., p. 429. 



Two specimens ; one male, one female ; Teocelo, Vera Cruz, 

 Mexico. September. Collected by Otis W. Barrett. Mexico. 

 (Coll. Acad. Nat. Sci. Phila.). 



I'etaloptera coufusa n. sp. 



Type : female ; Teocelo, Vera Cruz, Mexico. September. Col- 

 lected by Otis W. Barrett. 



Closely allied to P. filia Brunner, but differing in the form of the 



* These processes occupy the same position as styles, to which they bear a very 

 close resemblance. 



TRANS. AM. ENT. SOC. XXIX. NOVEMBER, 1902. 



