38 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



long as the prozona. Hind femora rather stout, olivaceo-ruddy brown, 

 sometimes fulvo- testaceous, the incisures of the outer face fuscous, the 

 apex more or less infuscated; hind tibiae glaucous, the apical half of 

 the spines black. Supraaual plate of male broadly triangular, with 

 slightly convex sides and roundly angulate apex, with a shallow basal 

 median sulcus, bordered by slightly elevated broad walls; furcula 

 wholly absent, the last dorsal segment emarginate in the middle; cerci 

 tapering rather rapidly iu the basal two-fifths, beyond very slightly 

 tapering, very slender, subacuminate, straight, reaching the top of the 

 supraaual plate. 



Length of body, male 16 mm., female 19.5 mm.; antennae, male, 

 female, 8 mm.; teginina, male 3 mm., female 3.5 mm.; hind femora, 

 male, 11 mm., female 11.5 mm. 



One male, 4 females. Venis Mecas, San Luis Potosi, Mexico, June 6, 

 E. Palmer; Mt. Alvarez, San Luis Potosi, Mexico, E. Palmer; Sierra 

 Kola, Tamaulipas, Mexico, December 3-6, E. Palmer. 



It is possible that the male, which comes from Yeuis Mecas, may be 

 distinct from the females, which come from all the localities; in that 

 case the name should be retained for the male as the most characteristic 

 form. 



2. CYCLOCERCUS ACCOLA, new species. 

 (Plate III, fig. 5.) 



With the same general color and markings as 0. bistrigata, but with- 

 out the distinct carinal stripe of that species. Head testaceous, black- 

 ish above, with a little of the postocular stripe in the female; fastigium 

 distinctly sulcate, broadening in front; interspace between the eyes 

 slightly narrower than in C. Mstrigata, the frontal and lateral costae 

 as there; antennae fusco- testaceous. Prozona with coarse dull punctu- 

 ation in the female, transversely ruguloso-punctate in the male, the 

 metazona in both closely punctate; posterior margin of prozoua faintly 

 emarginate, the sulcus dividing the lobes being slightly angulate; 

 dorsurn of pronotum darker or lighter testaceous, the lower portion of 

 the lateral lobes navo-testaceous, the upper portion blackish brown, 

 forming part of a broad, dark, arcuate belt, more sharply defined below 

 than above, which passes down over the mesothoracic epimera; abdo- 

 men testaceous, with a broad piceous lateral band on its proximal half. 

 Interspace between mesosternal lobes of male nearly twice as long as 

 broad. Teginina fusco- testaceous. Hind femora rather slender, fusco- 

 testaceous, yellowish on inner face, much infuscated and sometimes 

 strongly tinged with bluish green on outer face, the geniculation 

 wholly testaceous ; hind tibiae testaceous at extreme base, the remainder 

 bluish green, the spines pallid on basal, black on apical, half. Supra- 

 anal plate small, triangular, with roundly pointed apex, and a short 

 deep basal sulcus, bounded by high rounded walls; furcula wanting; 

 cerci small, slender, shorter than the supraanal plate, tapering gently 

 in basal half, beyond equal or subequal, very slender, blunt tipped, 

 straight. 



