268 



MR. B, F. CUMMINGS ON LICE 



copulatory apparatus. The Society's specimens agree in toto with 

 those described by ISTeumann. In Enderlein's figure there is a 

 discrepancy in the metanotum which I do not undei'stand. 



I have re-examined the male copulatory apparatus and the 

 following desci'iption supplements Neumann's and brings the 

 parts under recently devised terminology. Basal plate : Fairly 

 long and broad, broader in front than behind. The broader 

 anterior end is somewhat spatulate, the concave side facing 



Text-fioure 8. 



Sj/bophthirus notophaUus. Larva, Stage I. X 39. 



dorsally. Parameres : Strong, fairly straight rods. They bulge- 

 a little and then immediately narrow before the tip. The tip is 

 short and turned outwards. Mesosoine : The parts between the 

 parameres are merged into a single structvire, in which the 

 following parts may be distinguished : — Two bars, one on each 

 side (probably the endomeres), and apically a triangular plate — 

 the pseudo-penis. On the dorsal surface, projecting from about, 

 the level of the distal ends of the endomeres, is a small median 



