184 PROCEEDINGS OF THE NATIONAL MUSEUM \oi.. lu 



Tergites: Basal plate slightly uaiTowing anteriorly, sides straight; 

 not sutiirate or silicate. Remaining tergites (except ultimate pedal) 

 distinctly bisulcate. Verj'' sparsely setose. 



Sternites: Excluding ultimate pedal sternite each sternite very 

 sparsely setose; each coarsely areolate except for area of smoother areo- 

 lation surrounding each pore field . On anterior third of body each ster- 

 nite posteriori}^ extended in a broad low triangle, the extension inter- 

 locking with intersternite and succeeding sternite. Pore fields single, 

 subcentral, subtriangular, from sternite 2 through 20-22, the fol- 

 lowing sternites without pore fields and apparently without pores. 



Ultimate pedal segment: Pretergite distinctly suturate laterally, 

 thereby delineated from its pleurites. Tergite very broad, the 

 greatest width gi-eater than the gi-eatest length; sides slightly incurved, 

 posterior edge straight and about two-thirds the width of the anterior 

 edge; exposing all but the anterior quarter of each coxopleuron from 

 above; with a few very long setae. Presternite medially vaguely 

 suturate, fused laterally with pleurites. Sternite broadl}^ trapezoidal, 

 sides shghtly curving and convergent; posteriori}^ broadly truncate. 

 Each coxopleuron moderately swollen; laterally with a few very long 

 setae, ventroposterior surface with a dense vestiture of short setae; 

 glands homogenous, two per coxopleuron, posterior pores and glands 

 somewhat larger than the anterior. Legs each with six articles distal 

 to coxopleuron, tarsus having two articles, each with a few very long 

 setae in cu'clets; prefemur, femur, and tibia ventrally with subdense 

 short setae concentrated about as on coxopleuron; pretarsus repre- 

 sented only by a minute acicular bristle about one-eighth as long as the 

 largest neighboring setae. 



Postpedal segments: Gonopods broad, medially fused, each appar- 

 ently of one segment. Terminal pores absent. 



Family Geophilidae 

 Subfamily Chilenophiliuae 



Lestophilus bredini, new speries 



FiGUKEs 18-24 



All the species of Lestophilus known to date occur in Mexico and the 

 two Antillean Islands Hispaniola and Tortola. Further collection is 

 likely to disclose the presence both of described and of new congeners 

 throughout much of the West Indies, as well as in Central America, and 

 possibly in northern South America. 



Unlike some of the supraspecific groupings of circum-Caribbean 

 chilenophilines, Lestophilus seems quite consistent internally. Its few 

 species share a convmcing combination of apparently homologous 

 characters, the most useful of which appear to be the following: 



