( (il4 ) 



tlio hairs oi' tlic liitcnil row. Tin- lil'rh pair of dorsal liristlcs of tliesp tibiae is 

 represented by a minute hair. The longest dorsal apical bristle of the hindtibia 

 does not quite reach to ajiex of the first tarsal segment, while the longest ventral 

 bristle reaches a little beyond. The first and third segments of the foretarsns 

 are practically equal in length, while the second is somewhat longer, the fifth 

 (exclusive of daw) being nearly as long as the first three together. The pro- 

 portional length of the mid- and hindtarsal segments are as follows : — 



The longest apical bristle of the second hindtarsal segment reaches beyond the 

 apex of the fourth, and the longest ajiical bristle of the fourth segment extends 

 beyond the middle of the fifth. 



Modified Segments. — The clasper is broad, and bears at the apex two stout 

 spiue-lilie bristles, besides numerous thinner hairs as shown in the figure (PI. X. 

 fig. 36, ('1.). The finger (f) is almost cylindrical in outline, rounded at apex, 

 and bears a number of very short and thin hairs along the edge. The ninth 

 steruite (PI. X. tig. 36, IX. st.) is gradually iiiirrowed to the apex, being pointed, 

 and bears a number of hairs, of which one near the a])ex is the longest. 



The eighth tergite of the ? (PI. IX. fig. 2'.t) bears a regular row of bristles 

 of unequal length from the stigma downwards, a few bristles above the stigma, and 

 a series of bristles along the apical edge. Of this series four bristles, which stand 

 close together, are longer and stouter. On the inuerside of the eighth tergite there 

 are a number of hairs near the ajiex standing in a more or less irregular row, being 

 (on the slide) proximal iu position to the external hairs. The stylet of the anal 

 segment is cylindrical, being three times as long as broad. 



Length: J', 2 mm. ; ?, 2-06 mm. 



We have twenty-tliree examples of this species, as follows : — 



3 (J (J, Santa Andrea, Tabasco, May 3uth, 1897, P/co/i//i'x labiatii.'i. 



1 "5 9 2 



it# + t , ,, ,, ,, „ ,, ,, ,, ,, 



2 S 3, Pereno. Tat/iaia novenicincta. P. 0. Simons. 



2 (?(?, I 'liarnplaya, Bolivia, June 2Tth, I'.iol (P. O. Simons). Speothos reiiatii-its. 



2 6S, Minas Geraes. A. Kennedy. 



This species comes close to Pitlr.f boldsi Wagn. and Piilex liitzi Baker ; the 

 former has two complete series of bristles on the abdominal tergites, and in Pulcx 

 lutzi the third segment of the maxillary paljjus is longer than the first, atid the 

 second longer than the fourth. The sexual armature of the (?c? is also different iu 

 the three insects. 



'.). Pulex cleophontis spec. nov. (PI. X. fig. 32). 



This species is closely allied to Pule.i- a/istralis, and may possibly be only a 

 geograjjhical form of it. 



Head.— It bears a row of three bristles between the eye and paljii, but no 

 second row above it. 



