96 JAMES A. G. REHN. 



^er. 



Splieiiariiiiii ictericiini Gerstaecke 



1873, Sphennriiim idericum Gerstaecker, Stett. Ent. Zeit., xxxiv, p. 196. 



One specimen ; 9 , Cuernavaca, Morelos, xi. 



J»la<'hsero«era mexi<*aiia Saussure. 



1859, MaehH-rocera mexicana Saussure, Eevue et Magas. de Zool. (2), ix, ]>. 391. 



Five specimens; all males, Cuernavaca, Morelos, ix. 



Macliieroc<'i*a Miiinichrasti Thomas. 



1874, Mdcluerocerii siuiilchrasti Tlionias, Bull. U. S. Geol.and Geog. Surv. Terr. 



(1st Ser.j, No. 2, p. 70. 



Three specimens; all males, Orizaba, Vera Cruz, vi. 



These specimens differ but slightly from a female of the .><ame spe- 

 cies in my collection from Atoyac, Mexico. The greatest amount 

 of variation is in the median facial (or costal) carinre, which in one 

 are interiorly expanded then contracted so as to form a flasked- 

 shaped depression, a trace of which is visible in another specimen. 



Arpliia iiietana Saussure. 



1861, Tumonotus nietaiia Saussure, Revue et Magas. de Zool. ^2), xiii, p. 321. 



Three specimens; one $ , two 9 , Eslava, D. F., 8000 feet eleva- 

 tion, X. 



These agree perfectly with Saussure's description. 



ToinonoliiM azteciis Saussure. * 



1861, (Eilipoda azteca Saussure, Revue et Magas. de Zool. (2), xiii, p. 397. 



One specimen ; $ , Cuernavaca, Morelos, xi. 



This specimen is smaller than Saussure's minimum lueasurements 

 of males. 



Saussure's mininiuni. Cuernavaca specimen. 

 Length of body . . 15 mm. 14 mm. 



Length of tegmiua . 17 " 15.5 '' 



Ijactista iuerinus n. sp. 



Type: one specimen, S , Cuernavaca, Morelos, vi. 

 This specimen is allied to L. punctatiis, but differs decidedly in 

 the pronotum not being crested. 



Form rather slender. Head thick and blunt; the angle of the vertex rounded : 

 the depres.sion of the scutellum extending forwards and downwards, connecting 

 with the frontal costa between the ocelli. The frontal costa is moderately sul- 

 cate, the lateral carina; connecting with the borders of the fastigium, and extend- 

 ing as a raised ridge around the superior margin of the eye, below they are widely 

 divergent; the lateral carinse of the face being very prominent. Antenna? slen- 

 der, acuminate, very much longer than the head and pronotum. Eyes moder- 

 ately prominent, ovoid, longer than the infra-ocular space. Pronotum with no 



