214 bulletin: museum of comparative zoology. 



Length of type, cir. 18 mm. 



Locality. — British Guiana (taken at Washington, D. C, in pots of 

 plants imported from that country). 



One adult, or nearly adult, and three adolescent specimens. 



Geophilidae. 



The new genus and species described below, and Ribaufia bouvieri 

 Brolemann from the Carsevenne are the only representatives of this 

 family, in the strict sense, at present known to occur within Brazil. 

 Both genera belong to Chilenophilinae. Here also belongs Tai^iina, 

 of which a representative from British Guiana is described. 



ScHizoNAMPA, gen. nov. 



Frontal suture not evident. Basal plate wide; overlapped by the 

 cephalic plate. Antennae filiform. Dorsal plates bisulcate. 



Labrum free; tripartite; the median piece of moderate size, tri- 

 angular, with the free edge armed with teeth; lateral pieces fringed 

 with more slender, spinescent processes. 



Outer process of first maxillae uniarticulate ; bearing well-developed 

 membranous lappets. Inner branch seemingly set off by suture; 

 Coxae fused at middle. 



Second maxillae with coxae almost completely separated at mid- 

 dle, the connection being narrow and membranous. Pleurosternal 

 sutures strongly developed. Palpus triarticulate, terminating in a 

 large simple claw. Femur bearing at distoectal corner a strongly 

 chitinized acute process; tibia also bearing a similar process in a 

 nearly corresponding, or slightly more dorsal position. (Plate 6, 



fig. 6). _ 



Prehensorial feet large, conspicuously exposed from above, and 

 extending well beyond the front margin of the head; dentate within. 



Prosternum without distinctly developed chitinous lines. Basal 

 plate trapeziform; wide. 



Ventral pores not evident. 



Last ventral plate wide. Coxopleural pores appearing as two large 

 pits on each side. 



Anal pores not evident (in type). 



Anal legs with seven joints distad of the coxopleura, the small 



