gular in form. Urosome about the length of the anterior division, genital seg- 

 ment scarcely larger than the preceding one, last segment with the anal opercle 

 less prominent than in Cylindropsyllus. Caudal rami somewhat fusiform in shape 

 and rather divergent, each with a slender bristle outside near the tip, middle 

 apical seta of normal structure. Eye inconspicuous. Anterior antennae rather 

 slender, about equalling in length the cephalic segment, and 6-articulate, 1st joint 

 short and thick, 2nd joint 3 times as long and somewhat tapering distally, term- 

 inal part composed of only 2 joints. Posterior antennae with the proximal joint 

 imperfectly subdivided in the middle, outer ramus narrow linear in form, with 2 

 slender seta3 on the tip. Mandibular palp with the distal joint short but well defined 

 from the proximal one. Posterior maxillipeds comparatively small, but exhibiting 

 all the parts well defined. 1st pair of legs with the inner ramus shorter than 

 the outer, and having its 2 joints of about equal length. 2nd and 3rd pairs with 

 the inner ramus very small and tipped with a slender spine accompanied by a 

 small bristle, its inner edge in 3rd pair smooth, in 2nd pair carrying a moderately 

 long seta. 4th pair of legs much larger than the others, and resembling in struc- 

 ture those in Cylindropsyllus; inner ramus, however, considerably exceeding in 

 length the 1st joint of the outer and carrying on the tip a strong spine with n 

 broad fringe of cilia at the extremity. Last pair of legs forming each an oval 

 lamella produced inside to a strong spiniform process, outer part of the lamella 

 fringed with 6 slender setae, within them being an elongated spine. 



Male still more slender than female, and having the genital segment 

 distinctly subdivided. Anterior antennae transformed in much the same manner 

 as in Cylindropsyllus. 2nd pair of legs much larger than in female, and having 

 the 2nd basal joint produced between the 2 rami to an acute lobe curving out- 

 wards, terminal joint of outer ramus very large, nearly twice as long as the other 



2 combined, and slightly incurved in its distal part, inner edge exhibiting in front 

 of the middle 2 successive nodiform prominences, outer edge armed distally with 



3 slender spines, tip carrying a moderately long straight spine terminating in a 

 hook-like point; inner ramus distinctly biarticulate, with a short seta at the tip, 

 and another inside the proximal joint. 3rd pair of legs much less transformed, 

 inner ramus, however, as in 2nd pair, biarticulate, with the proximal joint very 

 short, distal joint acutely produced at the tip, and carrying inside a small bristle. 

 Last pair of legs smaller than in female, and without the spiniform process inside. 



Colour whitish. 



Length of adult female 1.75 mm. 



Remark*. This form, in all essential anatomical details, agrees very closely 

 with the species described by Th. Scott as Cylindropsyllus minor. It is, how- 



