32 i 



GEORGE K. F. NUTTALL. 



Fig. 18. BJii2)ice2)hahis cqypendiculatus, Seuin.a.nn, 1901, So- («) iiormally developed 

 luifed specimen in dorsal and ventral aspects, capitiilum in profile, spiracle and tarsus iv. ; 

 (b) small male, in dorsal and ventral aspects, which was removed from the host in the 

 larval and nymphal stages before it had fed to repletion ; the large and small males 

 (brothers) are drawn to the same scale ; a similar variation in size and structiue is observed 

 in natui-e ; (c) dorsal and lateral aspects of a fully fed male (less magnified) sho\^ing caudal 

 protrusion and the protruding adanal plates with abdomen distended beyond the contour 

 .of the scutum (Nuttall, 1913). 



