aye BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Tergite of last pediferous segment with caudal margin strongly 
rounded; sides but slightly converging caudad; narrower than the 
_penult tergite. 
Coxopleurae strongly enlarged but less elongate than usual. Densely, 
finely porose as usual. 
Anal leg much exceeding the penult, moderately thickened in the 
male. Second tarsal article slender, with the usual minute mem- 
branous appendage at its end. - 
First legs considerably shorter and more slender than the second 
which are of full size. Anterior legs clearly shorter and stouter than 
the posterior ones. | 
Pairs of legs 113 (0%). 
Length about 35 mm. 
Locatity.— Haiti: Mannville, December, 1912 (W. M. Mann). 
Typr. M. C. Z. 1717; one male. 
This is the most aberrant species of the genus. 
LESTOPHILUS, gen. nov. 
Head without evident frontal suture. Basal plate wide, largely 
overlapped by the cephalic plate, the exposed portion being very short. 
Dorsal plates bisulcate. 
Antennae short, filiform. 
Labrum free, tripartite. The median piece of good size, not at all 
overlapped by the lateral; its free margin with a series of stout 
conical teeth which are much less slender and spiniform than in 
Taiyuna (six in genotype). Lateral pieces fringed with many slender 
spinescent processes which are more numerous than in Talyuna. 
Outer process of first maxillae distinctly biarticulate, bearing two 
very long membranous lappets. Inner process set off by a distinct 
suture. Coxae completely coalesced. Second maxillae with coxae 
almost completely separated at middle, there being but a pale mem- 
branous connective or isthmus. The entire anteromesal border, or all 
excepting most mesal end, more strongly chitinous and at times © 
appearing almost as a separate sclerite (Plate 5, fig. 4). Pleuro- 
sternal suture strongly marked; pore situated mesad of the suture a 
little in front of middle of its length and opening through the mesal 
margin. The sclerite at angle small, not at all enlarged or extended 
cephalad as in Teloericus and Nesidiphilus and no median chitinous 
process present (Plate 5, fig. 5). Palpus triarticulate; terminating 
in a large simple claw; none of the joints with processes. 
Prehensors large, conspicuously exposed at the sides and projecting 
much beyond front margin of the head. Claw armed at base with a 
