May, '09] 



ENTOMOLOGICAL NEWS. 



213 



the subfamily, tamaulipensis is seen to be slenderer with de- 

 cidedly narrower head and pronotum, more elongate abdomi- 

 nal segments, longer limbs and smaller eyes. When the male 

 is compared with a male of Diapheromera calcarata from 

 Jalisco, Mexico, the slender form and the subgeneric charac- 

 ters at once separate the two. 



Size rather large ; form quite slender ; surface smooth. Head a half to 

 a third again the length of the pronotum, slightly broader at the eyes 

 than caudad, but the increase in width cephalad is slight, the greatest 

 width slightly less than the length ; occiput smooth, interocular region 

 with a pair of low, blunt, divergent horns, each situated caudad of the 

 articulation of the antennae ;* eyes gl6bose, moderately prominent ; prox- 

 imal antennal joint somewhat depressed. Pronotum nearly half again 

 as long as broad, subequal in 

 the male, slightly constricted 

 mesad in the female ; medio- 

 longitudinal sulcus slight, 

 medio-transverse sulcus 

 prominent, slightly arcuate 

 caudad. Mesonotum about 

 twice ( 9) or thrice (cf ) the 

 length of the head and pro- 

 notum together ; very slen- 

 der and moderately expan- 

 ded caudad in the male, more 

 robust and somewhat expan- 

 ded caudad in the female. 

 Metanotum with the median 

 segment equal to mesonotum 

 in the male and slightly 

 shorter in the female, similar 

 to that segment in shape in 

 both sexes ; median segment 



transverse, the Cephalic mar- Diapheromera (Ceratites) tamaiiJi/'i-nsis n. sp. 



Lateral view of head of female and apices of 



gin slightly arcuate cephalad. abdomen of male and female and dorsal view 



Abdomen about equal to of apex of male abdomen (x 4). 



(c?) or distinctly longer than ( 9) the head and thoracic segments, the 

 joints decidedly ($} or moderately ( 9 ) elongate, the six proximal ones 

 similar in character, but slightly decreasing in length. Male with the 

 seventh dorsal abdominal segment distinctly longer than half the sixth 

 segment, inflated but not much expanded laterad ; eighth dorsal segment 

 of the male transverse, not more than half the length of the seventh seg- 



* Absent in the male, but see footnote f. 



