34 PROCEEDINGS OF THE NATIONAL MUSEUM. 



Length of body, male, 15 mm., female, 18 mrn. ; antennae, male, 9 mm., 

 female, 7 inin.; tegmina, male, 2.75 mm., female, 3.5 mm.; hind femora, 

 male, 10 mm., female, 10.75 mm. 



One male, 2 females. Waco, McLennan County, Texas, October 4, 6 

 (Museum Comparative Zoology); Texas, Belfrage, October 13. 



The broader cerci, incurved throughout and not abruptly bent inward 

 apical ly, separate this species clearly from R. palmer i. In one view 

 their base may be said to be narrower than the apical portion and so 

 the description of StaPs species would.be applicable to this, but the 

 interval between the mesosterual lobes of the male is here nearly twice 

 as long as broad, while in R.pilosus it is more nearly quadrate. 



2. RHABDOTETTIX PALMERI, new species. 

 (Plate III, fig. 3.) 



Body thinly but not briefly pilose, luteo- testaceous beneath, black or 

 blackish ferruginous (male) or ferrugineo-testaceous (female) above, 

 marked with dull luteous; the darker parts are found in a dorsal stripe 

 from the front of the vertex to the front of the metazona, on the upper 

 half of the lateral lobes of the prouotum, and on the sides of the 

 abdomen. Head luteo-testaceous, more or less deeply infuscated; 

 frontal costa feebly punctate above; antennae luteous or testaceous, 

 apically infuscated. Pronotum with the dark portions mentioned 

 separated by a narrow light stripe, which begins behind the upper 

 part of the eyes and on the head is bright luteous, but in passing over 

 the pronotum, especially iu the female, becomes much duller and is 

 sometimes scarcely distinguishable; in most vivid examples it crosses 

 the pronotum, but even in the male it usually becomes obsolescent on 

 the metazona, which is mostly ferrugineo-testaceous in both sexes, 

 rarely black mesially in the male; the lateral stripe on the pronotum 

 generally margined more or less distinctly with black ; lower portions 

 of lateral lobes luteous or luteo-testaceous, narrowly edged beneath 

 with testaceous; abdomen with a widening dorsal stripe of ferrugineo- 

 testaceous. Fore and middle femora ferruginous, slightly iufuscated 

 apically; hind femora green, ferruginous above, the upper genicular 

 lobe and sometimes the whole gemculation black; hind tibiae green, 

 the spines black-tipped, usually nine but varying from nine to eleven 

 in the outer series. Supraanal plate of male triangular with slightly 

 convex sides, which are slightly elevated and separated by a broad 

 valley from the median tectate portion; the latter is considerably ele 

 vated and carries a deep slender median sulcus more than half the 

 length of the plate; furcula consisting of a pair of broad plates, whose 

 advance beyond the posterior line of the last dorsal segment is scarcely 

 perceptible, each about a quarter the basal width of the supraanal 

 plate; cerci moderately broad, compressed, straight and slightly dirnin 

 ishingin size for about two-thirds their length, then suddenly and con 

 siderably curved inward and bent upward, narrowing more rapidly and 



