528 ‘BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
Tergites with the paired sulci distinct as usual. A median sulcus 
also commonly clearly impressed. 
Anterior spiracles large, vertically subelliptic. The first one largest. 
Others decreasing gradually caudad and beyond the first few becoming 
strictly circular. 
Ventral plates with a median longitudinal sulcus which is deepest 
caudad. ; 
Ventral pores more numerous than usual in the genus; arranged in a 
transverse band in front of the caudal margin, the band being widest 
at the middle when it is somewhat extended cephalad along the 
groove. Last ventral plate narrow. Sides a little concave cephalad 
but mesally straight, converging caudad, abruptly a little more strongly 
so toward caudal end. Caudal margin straight. 
Coxopleurae considerably inflated. Pierced by numerous small 
pores above and below as usual, fewer on lateral surface and caudal 
end poreless as usual, the pore-free area largest above. 
Last tergite somewhat narrower than the preceding one, leaving the 
coxopleurae more exposed above than usual in the genus. Sides 
straight, moderately converging caudad. Caudal margin straight. 
Nearly equal in length and breadth or but slightly longer. 
Anal legs in the female longer than the penult, slender, the joints 
decreasing in diameter distad. Last tarsal joint especially slender, 
narrowing distad. Hairs mostly long, sparse. 
Anal pores distinct. 
Pairs of legs 77 (2). 
Length about 36 mm. 
Locatity.— Haiti: Petionville, November, 1912 (W. M. Mann). 
Type, M. C. Z. 1712; one female. 
GEOPHILIDAE. 
PIESTOPHILINAE. 
LEPTOPHILUS, gen. nov. 
Head without frontal suture. Basal plate very wide. Dorsal 
plates bisulcate. 
Labrum free; tripartite. Median piece large, armed with a series 
of stout conical teeth (six or seven in genotype). Lateral pieces with 
a fringe of spinescent processes as in Geophilus. 
Coxae of second maxillae united at middle only by a weak mem- 
branous isthmus. Palpus triarticulate, ending in a simple claw. 
