CHAMBERLIN: CHILOPODS FROM MEXICO AND WEST INDIES. 523 
stout conical black tooth. Femuroid armed toward distal end with a 
larger stout, distally rounded process or tooth which is less strongly 
chitinized than that of the claw and is pale like that of Nesidiphilus. 
Prosternum without chitinous lines. Anterior margin with two 
teeth. 
Ventral pores few; present on the anterior plates in a narrow 
transverse band in front of the caudal margin. 
Spiracles all circular or the first one a little vertically elongate and 
much larger than the third one. 
Last ventral plate intermediate in size, varying across the anterior 
end from slightly wider than long to a little longer than wide; sides 
strongly converging caudad. 
Tergite of last pediferous segment mostly very broad and almost 
wholly, concealing the coxopleurae in dorsal view. Not strongly 
narrowing caudad. As wide as penult tergite to a little narrower 
with sides more converging; equal in length and breadth to wider 
than long. ; 
Coxopleurae moderately inflated, not unusually elongate, not at 
all exposed at sides of last prescutum. Pores small and numerous; 
most dense on ventral surface; absent from caudal end and above 
excepting proximally where they open near and beneath the edge of 
the tergite and beneath border of prescutum. 
Anal pores present but small. 
Anal legs with six articles distad of coxopleurae. Clawless. 
GENOTYPE.— L. paucipes, sp. nov. 
LESTOPHILUS PAUCIPES, sp. nov. 
Ochraceous or in some clear yellow caudally. Head darker, of 
dilute chestnut tinge, darker along sides and in region of the frontal 
suture. Legs yellow. Prosternum and prehensors dilute chestnut 
like the head. Venter pale ochraceous to clear yellow. 
Body moderately robust. From the middle region conspicuously 
narrowing to the caudal end but only very slightly narrowing cephalad. 
Cephalic plate widest at junction of frontal and caudal divisions; 
semicircularly rounded cephalad and the sides converging caudad; 
the caudal corners rounded as usual; caudal margin straight or weakly 
widely incurved. Longer than wide in ratio 7:5. Place of frontal 
suture taken by a vague, incomplete pale line. Hairs short and very 
sparse. Basal plate largely overlapped by the cephalic plate; the 
exposed portion very short, in type being 6.44 times wider than its 
median length but in some specimens even as much as 13 times 
wider. 
