310 ENTOMOLOGICAL SOCIETY 



Segments 9 to 13 or 9 to 14 have, in addition to the poriferous area, a 

 transversely elliptic depression in the anterior part of the sternum; this 

 is strongly chitinized and clearly defined; the reticulations of the integu 

 ment are distinct, but are much smaller than elsewhere. 



Pleurae of last segment not inflated; provided with about ten pores 

 opening into two cavities concealed by the last sternum, which is broader 

 than long, with converging sides and transverse posterior margin. 



Anal legs 6-jointed and provided with a claw; basal joints very large 

 and crassate, the two distal small and slender, articulated to the superior 

 corner of the fourth joint, against which they close ; the ventro-mesial sur 

 face of the third and fourth joints have a smooth area perforated by nu 

 merous small apertures, possibly the bases of rudimentary hairs, presum 

 ably the openings of silk glands; the legs seem to be essentially alike in 

 both sexes. 



Genital palpi simple in the male, obsolete in the female. 



This genus is undoubtedly closely related, if not identical, with 

 Piestophilus Cook,* based on Geophilus tenuitarsis Pocock,f 

 from the West Indian island Dominica. It seems, however, to 

 deserve separation on account of the following points of dif 

 ference : 



Much larger size and greater number of legs, Piestophilus 

 tenuitarsis being 35 mm. long and having 85 pairs of legs. 



Ventral pores are present in a definite area, while wanting in 

 tenuitarsis. 



Pleural pores are also present, although the pleurae are smaller 

 in proportion to the size of the anal legs than in tenuitarsis. 



The anal legs are apparently much larger in proportion to the 

 last segment, and have a porose area on the mesial face of the 

 third and fourth joints ; the strong lateral compression of the four 

 proximal joints described by Pocock for tenuitarsis is also not 

 pronounced in the new form. 



ERITHOPHILUS NEOpus, new species. 

 (Plate IV, figs, \a-\d}. 



Type. U. S. Nat. Museum, No. 779. 

 Locality. Sugar Loaf Key, Florida. 



Length 13 mm., width .5 mm. ; number of pediferous segments varying 

 from 45 to 47 in males to 51 in females. 



Color, waxy white, the extremities brownish. 



Four specimens of this species were secured by digging in the 

 ground under stones in a recently cleared place on the north 

 shore of Sugar Loaf Key, Florida, in March, 1898, the same 

 station where Ityphilus was found. 



*Proc. U. S. Nat. Mus. 



t Ann. Mag. Nat. Hist. (6) II, p. 475, pi. XVI, figs, c-r 3 (1888). 



