36 PROCEEDINGS OF THE NATIONAL MUSEUM. VOL.XX. 



with no obtuse apically emarginate lobe [furcula], the hind femora 

 slenderer and longer, prosternal spine conical, and the antennae longer, 

 more than half as long as the body; hind tibiae in the specimen 

 described furnished exteriorly with eight black spines, greenish oliva- 

 ceous at the base. 



A female specimen, in which the dor sum of the body and of the hind 

 femora are ferruginous, with smaller eyes, the interspace between the 

 mesosternal lobes subtransverse and scarcely narrower than the lobes 

 themselves, and metasternal lobes moderately distant, is very probably 

 to be referred to the species described above. In this specimen the 

 antennae are mutilated and the hind tibiae armed exteriorly with nine 

 spines. 



Mexico (Brunner's collection). 



To this I may add that the present species is certainly very close to 

 the others described above under this genus, but seems to be slightly 

 larger than either, and to differ by the cerci of the male to a greater 

 degree than either of these do from each other. It is evidently also of 

 a lighter color, and no mention is made by Stal of a very distinct dark 

 lateral baud, which is characteristic of the other two. 



1O. CYCLOCERCUS, new genus. 

 (nvxho?, circle; nspno^, tail.) 



Body shaped much as in Paraidemona, male and female, rather 

 sparsely and not very briefly pilose. Head not prominent, the vertex 

 moderately arched, scarcely elevated above the pronotum, but the 

 fastigiuin rapidly descending, more or less sulcate especially in the 

 male, much broadened anteriorly; face moderately retreating, the 

 frontal costa generally more or less sulcate and broadening slightly 

 from above downward, generally percurrent ; interval between the eyes 

 narrow (male) or rather narrow (female), generally narrower than the 

 upper part of the frontal costa; eyes moderately prominent, especially 

 in the male, generally much (male) or scarcely (female) longer than the 

 posterior infraocular portion of the genae; antennae much (male) or 

 scarcely if at all (female) longer than the head and pronotum together. 

 Pronotum scarcely (male) or considerably (female) enlarging from in 

 front backward, both front and hind margins truncate, the latter some- 

 times slightly emarginate, the surface transversely convex with feeble 

 or no median carina and no lateral carinae, the disk passing jilmost 

 insensibly into the vertical lateral lobes; prozona about twice as long 

 as the metazona and less closely and less regularly punctate, the trans- 

 verse sulci as in Sinaloa. Prosternal spine erect, blunt, conical; inter- 

 val between mesosterual lobes at least as long as broad in the male, a 

 little transverse in the female, the metasternal lobes attingent or sub- 

 attingent in the male, approximate in the female. Tegmina shorter 

 than the pronotum, lateral, linear. Fore and middle femora distinctly 

 more gibbous in the male than in the female; hind femora rather short 



