24 rnoCEKDIXGS OF TIIJC XATIOXAL MUSEUM. \ol.xx 



not mil eiilaij?iii{? slightly (male) or considerably (female) in passin^r 

 backwaifl, witli distinct percurrent median carina and sometimes dis 

 tinct. sometimes scarcely perceptible lateral carinae, the (h>rsum very 

 broadly tectate in the tirst case, obscurely so in the second, the lateral 

 lobes subvertical or vertical; both front and hind margins transverse, 

 the latter emarginate; prozona sparsely punctate, as long as its pos- 

 terior breadth, alxmt twice as long as the densely i>un<tate metazona. 

 cut in the middle by a distinct, straight, transverse sulcus, and followed 

 at less than half the distance to the metazona by a similarly imi)resse(l 

 transverse sulcus of variable direction. Prosternal spine conical, erect, 

 in the male rather long; interspace between mesosternal lobes snb 

 quadrate but much narrower than the lobes in the male, distinctly 

 transverse and nearly or <|nite as broad as the lobes in the female, the 

 iretasternal lobes attingent or approximate in the male, moderately 

 distant in the female. Tegmina rather long elliptical, fully as long as 

 the prozona. Fore and middle femora tumid in the male; hind femoni 

 not very long and rather stout, but subcompressed, the hind tibiae with 

 nine to ten spines in the outer series. Extremity of the male abdomen 

 subclavate, but elongate by the posterior extension of the subgenital 

 plate, as in liarytettix. as a blunt conical tubercle; lateral margins ot 

 this plate straight from the base, the apical margin well rounded, reach 

 ing beyond the tip of tlie supraaual plate by a brief distance; cero 

 and furcula as in Barvtettix. * . 



The type of this genus is C. mUjuclltana^ the only one in which botli 

 sexes are known. 



Three species are here described; they occur in Mexico and south 

 western Xew Mexico. 



ANALYTICAL KEY To TIIK SPECIES OF CONALCAEA. 



A'. L.iteral carinao of pronotum «listinct; posterior mai'gin of proiiotiim distinctl} 

 emargiuate. 



6'. Tegmina well roundod at tip; hin<l tibiae red 1. migueViiana {y>.2{ 



h'. Tegmiua apically truncate; hind tibiae luteous or flavcscent. 



2. trtincatipennis (p. 2' 

 A^ Lateral carinae of pronotnm obscnre, the dorsum passing almost insensibly in; 

 the lateral lobes; posterior margin of i.»ronotum only faintly emargiuate; lobe.« i 

 furcula of male much broader than long, scarcely projecting. 



3. neomejcicana (p. 2ti 



I. CONALCAEA MIGUELITANA, new species. 



, (Plate II, tig. 8.) ■ . 



Fusco-testaceous, more or less lutescent beneath, very sparsely pil(»> 

 Head dull luteous (inale)orolivaceo-testaceous, much infuscated(femalt 

 the vertex always more or less infuscated and especially marked wit 

 a pair of dark streaks divergent from the ba.se of thefastigium; g<'n;i 

 much mottled with fuscous, particularly in the female ; fa.stigium suh it 

 between the eyes and feebly, in the male only, beyond; frontal cost 

 barely reaching the clypeus, nearly plane but depres.^^ed at the occil' 

 in the female, feebly sulcate except at summit in the male, puncta 



