18 JAMES A. G. REHN. 



succeeding ones. Median femora unarmed except for the spine on the external 

 genicular lobe, sulcate below ; tibia? bearing four closely appressed spines around 

 the median portion of the limb, apical spines as on the anterior tibiae; first tarsal 

 joint as long as the remaining joints of the tarsi. Posterior femora considerably 

 inflated, genicular lobes rounded, lower external margin hearing one (or two) 

 spines on the distal portion, lower surface sulcate; tibia? slightly longer than the 

 femora, multispinose, the larger spines four in number and confined to the apical 

 two-thirds of the limb, the smaller spines closely placed from the proximal to 

 the distal extremity except for the larger spines, the latter being placed closer as 

 the apex is approached, the. number of small spines in the apical interspace being 

 five, while the interspace between the. third and fourth large spine, contains 

 thirteen ; first tarsal joint very long, considerably exceeding the other joints 

 together. Subgenital plate subtriangular, apex broadly emarginate. 



General color ochraceous, blotched and barred with wood -brown, this tint being 

 blackish brown on the abdomen. Borders of the pronotum, mesonotum and me- 

 tanotum, hind femora and vertex strongly blotched with overlying tint. Lower 

 margin of the. hind femora alternate blocks of blackish and ochraceous. 

 Measurements: 



Length of body 10. mm. 



Length of pronotum ..... 3.5 rpm. 



Length of hind femora ..... 9. mm. 



Camptoiiotus aftinis n. sp. 



Types: one male, two females ; Mexico (Acad. Nat. Sci. Phila.) 

 (2). Jalapa, Vera Cruz, Mexico. September. Collected by Otis 

 W. Barrett (1).* 



Closely allied to C. carolinensis (Gerstaecker), but considerably 

 smaller, with relatively shorter cerci and more elongate subgenital 

 plate, and with fewer spines on the external margin of the hind 

 tibiae (4 or 5 instead of 7 or 8). 



Size small ( % ) or medium ( 9 ) ; body entirely glabrous. Head rounted, inter- 

 ocular space narrower in the male than in the female ; eyes moderately exserted ; 

 antenna? filiform. Pronotum saddle-shaped; anterior margin subarcuate, pos- 

 terior very broadly emarginate, lower margin of the lateral portion with the 

 posterior portion diagonally trimmed, the whole periphery bearing a very per- 

 ceptible shoulder most marked on the lateral portion. Mesonotum and meta- 

 notum not as deep laterally as the pronotum, neither more than half as long as 

 the latter. Abdomen robust, rather bullate in the male. Anterior and median 

 femora rather full, unarmed except for the apical spine, the anterior slightly the 

 longer; anterior and median femora with three spines on each lower margin, 

 femora and tibia? shallowly sulcate below. Posterior femora short, rather robust, 

 moderately sulcate below, lower borders distally with a number of small spines 

 (2 to 6^ ; tibia? about as long as the femora, both upper margins with 4 or 5 spines. 

 %. Subgenital plate elongate, apex triangularly emarginate; styles small in- 



* Additional information with this latter specimen is to the effect that it was 

 "taken while ovipositing in mortar-cracks." 



