)iew Sp:cits of Lice. 97 



short, a little broader, with lateral margins convex. Poste- 

 rior margin straight, A considerable area adjoining the 

 posterior margin medially is pale or white, tlie chitin being 

 tliiii, and the thicker, deep brown cliitin ceasing in an 

 irregular edge. 



A strongly developed mesosternum is present, and shown in 

 the figure. Within the prothorax on each side a thin rod runs 

 from the dorsal side to the ventral, takinsr its oriorin from the 

 posterior margin of pronotuin, and then running downwar^ls 

 and outwards to be inserted into the anterior lateral angle ven- 

 trally. On the ventral surface of the meso + metat!iorax on 

 each side are the usual two acetabular bars — strong, rather 

 short, running inwards and downwards on the under surface 

 of the meso + metanotal wing, and helping to suspend the 

 coxae, into which they are inserted. 



Abdomen : as in the J , there are at the base two large 

 pleurites on each side. In the ? these are succeeded on the 

 next segment by a minute atrophied pleurite on each side, 

 the chitin of which appears to be partially disintegrated. On 

 the otiier segments, except the penultimate, the pleurites are 

 completely absent. Tiie penultimate pair are large plates, 

 with irregular inside margin, lying in the dorsal surface. 

 The basal plates lie laterally. Tergites and sternites are 

 absent except for a tergiteon the last segment, almost divided 

 in two by a median longitudinal line of weak chitinization. 

 On the sternum of the same segment, partly covered by the 

 large gonopods, is a brown mark of peculiar shape (see fig. 3). 



'J'he gonopods are strongly chitinized flaps of considerable 

 size, articulated ventro-laterally so as to cover much of the 

 lower surface of the last segment. In dorsal view, the free 

 edge of the gonopod is seen on each side, at its base articu- 

 lating by a rather wide and circular hinge with the pleurite 

 of the penultimate segment. 



In both J and ? the abdomen is large, loose, and 

 " baggy." 



Chretotaxy. Mah. — Head : around and just behind the 

 rim of the frontal sinus on the dorsal surface four widely- 

 spaced hairs. A little way in the rear of the first and fourth, 

 another hair. In front of the antenna, a small hair. Around 

 the temple margin, four or five small hairs. Inside the 

 margin, one behind the other, five hairs of somewhat larger 

 size, the first separated by a wide space from the ones behind. 

 Three or four hairs on the promontory on each side of the 

 sinus. Other hairs on dorsal surface arranged as shown in 

 the figure. Ventral surface apparently bare. On upper 

 surface of first segment of the antenna, a row of six large 



Ann. d& Mag. N. Hist. Ser. 8. Vol xvii. 7 



