lo. 1124. 



L'unsinx or riii: Mr.LAyopi.i—srrDnEn. 37 



111(1 stout, tlic onter marjrin of the hind tibiae witii nine or ten spines. 

 t:xtieniity of abdomen bhmtly rounded (whence the ^'eneric name), the 

 lateral niar«;in8 of the 8ub;;enital phite straight from the very base, in 

 DO way an;,ndate on meeting anically, but protrudin*,^ beyond tiie apex 

 of the supraanal plate bym<)re than half the length of the latter; eerci 

 conical, acuminate, sometimes with an inferior median tooth; furcula 

 rhoUy wanting. 



Three species occur in northern Mexico and southern Texas. 



(\ Instrif/atd may be taken as the type. C. rah/a is somewhat aber- 

 rant, and should perhaps be separated generically. 



ANALYTICAL V TO TflK SPECIES OF CYCLOCEUCCS. 



A.' Intt'ispace l»et\veeu iiiesosterual lobes of male nearly twice as Ioujj: as broad; 



anal cerci of male Hleiider. simplf. 

 6.' Hind femora nlatively stout; upper surface of body with a distinct bright 

 stripf running from the npi)er margin of the eye backward over the region of the 



lateral carinae on each side 1. bisfriffota (p. 37). 



b:- Hind femora relatively slender; ni>per surface of body with at most an ol»8cure 

 stripe in the region specified 2. accola (p. 38). 



A.- Interspace between mesosternal lobes of male 8ul>quadrate; cerci of male stout, 



with an inferior median tooth 3. rahja (p. 39). 



I. CYCLOCERCUS BISTRIGATA, new species. 



(Plate III, fig. 4.) 



Dark almo.st blackish chocolate brown, striped with bright yellow 

 testaceous. Head testaceous, often clouded, occasionally mottled, with 

 fuscous, the summit to below the middle of the eyes posteriorly blackish 

 brown, with a narrow but widening testaceous stripe behind the upper 

 half of the eyes; lateral margins of the fastigium, i)articularly between 

 the eyes, elevated to a rounded riilge, more prominent and rounded in 

 tbe male than m the female, reversely arcuate; frontal costa moderately 

 broad, subecpial, sulcate (more deeply in the male than in the female), 

 above feebly punctate at the sides, occasionally obsolescent at base in 

 the female; lateral carinae of face distinct, slightly divergent; antennae 

 testaceous. Both i>rozona and nietazona ruguloso-imnctate in the 

 male, the i)rozona coarsely, bluntly and rather sparsely punctate in 

 tlte female; pronotum with the jmstocular testaceous stripe of the head 

 continued, in the male as a slender, sharply defined stripe across both 

 pFDzona and metazona, m the female as a slightly broader stripe across 

 or nearly across the jirozona only, fading i)osteriorly and less sharply 

 defined above; eiusterna testaceous; meso- and metathorax and abdo- 

 men of male blackish above, with a broad inediodorsal testaceous stripe, 

 and testaceous below; of female more or less bljickish along the middle 

 of|tlie sides, sometimes margined above with a broad, posteriorly 

 evanescent, often broken, testaceous stripe, generally' almost or quite 

 ol^lolete, the dorsum proper brown. Interval between the mesosternal 

 lo^s of male nearly twice as long as broad. Tegmina slender, linear, 

 v«ry slightly and regularly enlarging to the well rounded tip, about as 



