404 



CESTEID^. 



311. Portschinskia przewalskyi, Ports. 



Microcephalus przexvahhyi, PortscLinskv, Horre Soc. Eiit. Ross, 

 xxi, p. 9, pi. i, rig. 7 (1887). 



c5' $ • Head much narrower than thorax ; upper part of frons 

 nearly linear ; at point of nearest aoproach to the bare, chocolate- 

 brown eyes it is about one-seventh the widtli of the head, thence 

 widening gradually downwards ; frons wholly dull black, with 

 red-brown, rather fine and long pubescence towards sides ; 

 ocellar tubercle extending hindwards to extreme vertex, but the 



Fig. SL—Portschinskia przeviuhJcyi, Ports., 

 front view of head. 



shining brown ocelli are only moderately large, and placed well 

 forward. Pace deeply wrinkled, black, receding gradually from 

 base of antennae; the deeply siniken cheeks, which are sharply 

 demarcated in almost keel-like fashion fi-om the face, reach 

 downwards to a distance equal to more than the height of the 

 eyes, and extend somewhat broadly hindwards ; space in the 



Fig. 85. — Portsckiiis/da przewalskj/t, Ports., antennas: a, jirofile, 

 inner side : b, half profile. 



median line just below antennas shining black, bare; two con- 

 spicuous though narrow and approximate ridges run from below 

 the antennae nearly to the mouth-opening, and are more or less 

 reddish in colour; hinder part of clieeks with darker, red-brown, 

 rather long and almost shaggy hair; there is a small, slightl}^ 

 wrinkled, shining bare space above the antennae. The latter dull 

 orange ; 1st joint wilh a few sliort black and yellowish bristles of 



