( 567 ) 



evenly rounded and broader. The short bristles fonnd above the auteniial groove 

 and on the iirst segment of the antenna are more numerous in the ? than in the i, 

 the ? -antenna, in addition, being much shorter. 



Thorax. — The pronotnm has a comb of 27-29 spines in the c? and 29-31 in 

 the ?, and bears in most specimens three rows of bristles, containing in the iS 9-11, 

 16-19 and 14 bristles respectively, the nnmbers being in the ? 0-3, 18-19, 13-14. 

 The mesonotum has seven rows of bristles, the anterior rows being irregular and 

 incomplete ; the metauotum has six rows, of which the first is represented hj a few 

 bristles only. The mesopleura bear in the c? 27-30 bristles and in the ? 34-50, the 

 metepimernm having at least twenty-nine in both sexes. 



Abdomen. — In most S cJ the first abdominal tergite bears a comb of a few 

 spines, but apparently never in the $ . The second to fifth tergites have a lateral 

 comb in the t? and the second to fourth in the ? , the sixth of the <S and fifth of the 

 ? bearing occasionally a single spine. The numbers of spines in the combs on 

 each side are : c?— I 0-4, II 8-11, III 8-13, IV 11-1.3, V 6-9, VI 0-1, and in the 

 ? I 0, II 4-6, III .5-7, IV 3-7, V 0-1. The tergites 1-VII bear each four rows of 

 bristles with a few additional small bristles in front. The bristles of the tergites 

 are more numerous in the c? than in the ?. The basal steniite has ten to fourteen 

 small lateral bristles in the S and seventeen to twenty-three in the ?, besides a 

 number of bristles placed at the ventral margin. The posterior row on the sternites 

 of segments IIl-VI contains on the two sides together eight to eleven long bristles 

 in both sexes, there being twenty-five to forty-five bristles in front of the row. 



Legs. — The forecoxa has about a hundred bristles on the outer surface and 

 the margins, and the forefemiir about ten to fifteen small lateral bristles on the 

 ontside in the S and sixteen to twenty-two in the ? . The mid- and hindfemora 

 have lateral bristles only at and near the apex. The comb-like dorsal bristles of 

 the foretibia number eleven or twelve, while those of the hindtibia vary from fifteen 

 to nineteen. Each tibia bears four long inner dorsal bristles, the corresponding 

 bristle of the first notch on the foretibia also being prolonged. The bristles of the 

 tarsi are short bat very numerous. Many of the additional lateral bristles are 

 rather pale, such bristles being particularly unraerous on the anterior side of the 

 second hindtarsal segment. The measurements of the tarsi are as follows in 

 two pairs : 



Foretarsns: cJ— 17, 15, 11, 8, 16 ; ?— 21, 15, 11, 8, 18. 



19,16,11,8,17; 21,15,11,8,18. 



Midtarsns : <?— 29, 20, 12, 9, 20 ; ?— 37, 23, 14, 9, 18. 



35, 25, 15, 10, 20 ; 38, 24, 14, 9, 18. 



Hindtarsus : c?— 55, 41, 24, 13, 20 ; ?— 65, 42, 23, 14, 19. 



64, 44, 25, 15, 21 ; 63, 45, 24, 15, 22. 



Mollified Segiiientii. — c?. The eighth tergite (text-fig. 34) bears about a dozen 

 short bristles aljove the stigma on each side. The eighth sternite has the apical 

 margin slightly incurved ; the lower angle projecting a little, though it is strongly 

 rounded off'. The bristles number about fifty-five to sixty, and are divided by a 

 naked apical area into an uiijier and a lower set, as shown in the figure. The ninth 

 tergite bears a row of hairs below the sensory plate and four large bristles at the 

 apical margin of the lateral iucrassate portion which corresponds to the clasper of 

 other iSiphonaptera, these long bristles being accompanied by one or two small ones. 

 The long process F' is more strongly widened in the centre than in the other known 



