316 Mr. G. T. Bethune-Baker's Notes on the 



ration differs from its near allies, whilst the genitalia 

 abundantly justify its separation, the sternite and the 

 tergite sections being very unusual in structure (for 

 Rnralidae) ; the clasps are composed of an ovate portion, 

 truncated at the front apex and angled off at the lower 

 part, it is open fore and aft but closed above and below 

 and on each side are the clasps proper, somewhat ham- 

 shaped with the knuckle end bent slightly downwards, 

 both portions are very sparingly supphed with fine bristles. 

 The aedoeagus is very large (this organ is an important 

 item in generic differentiation), shortish, for its family, but 

 very wide, tapering somewhat for the basal four-fifths, 

 where it is obtusely angled, from whence the apex expands 

 into a large fiorescent trumpet-shaped orifice. The girdle 

 is erect, expanding suddenly forwards below the tegumen, 

 which is funnel-shaped, deeply excavated in front with the 

 dorsum terminating in a blunt point. Whilst the lower 

 part is bifid also terminating in blunt points, below these 

 are the falces broad and strong, suddenly curved upwards 

 near their tips with one or two sharp teeth near the bend ; 

 the apices of the lower part of the tegumen are furnished 

 plentifully with bristles, but the dorsum very sparingly. 

 The genus Hypaurotis was separated of! — again by Scudder 

 {I.e., p. 112) — on what I thought were very fine grounds 

 for the species Chrysalus, but having examined the armature 

 I do not think copulation would be likely to take place 

 with species even within its own family. The clasps are 

 quite different in shape to any other American species 

 or any near ally, and the aedoeagus is very peculiar ; it is 

 bottle-shaped in its tubular section, tapering wider up to 

 its terminal third, where it is suddenly constricted like the 

 neck of a wine bottle, expanding but slightly at its apex — 

 about as much proportionately as a champagne cork does. 

 The tegumen, however (again a very important generic 

 character), is perhaps the most specialised, the dorsum is 

 broad and ample, the front apex being very highly ex- 

 cavated, the two laterals being reduced to two long deeply 

 curved strong hooks, the front edge below the hooks being 

 deeply excavated also and produced downwards into a 

 lobe at the bottom of which the falces are attached and are 

 very unusual, they are strongly curved upwards from the 

 base where they are very broad and strong, their upper or 

 dorsal part being broadly covered with strong sharp teeth 

 extending along up to the point where they are sharply 



