482 Mr. D. Sharp and Mr. F. Muir on the Comjoarative 



veloping it. They are the " deux branches de la 

 pince " (Straus-Durckheim) ; mesostili in Procrustes, 

 ipofallo in Lncanus and perifallo in Dj/tiscns (Berlese) ; 

 apicale (Blaisdell), lateral lobes (Packard), Parameren 

 (Verhoeff). 

 Median foramen (mf). The aperture, or lumen, at the 

 base of the median lobe through which the ejaculatory 

 duct passes. 



Median lobe (inl). The central portion of the aedeagus 

 upon which the median orifice is situate. It is the 

 penis of Straus-Durckheim, Verhoeff, Packard and 

 many other writers, Korper (Lindemann), body 

 (Hopkins), ipofallo in Procrustes etc., and penis in 

 Oryctes (Berlese). 



Median orifice {mo). The opening, or area, on the median 

 lobe through which the internal sac is evaginated. It 

 is the " Mundung ductus ejaculatorius" (Verhoeff), 

 fornix edeagi (Blaisdell) and apical opening (Hopkins). 



Median strut {ms). A single strut, or a pair of struts, 

 proceediog from the basal part of the median lobe. 

 In some cases they are articulated to the median 

 lobe, in other cases they actually form part of the 

 median lobe without articulation or line of demarca- 

 tion. 



Point of articulation {pi). The point on the median 

 lobe to which the lateral lobes are attached. In 

 many cases the median lobe and tegmen are con- 

 nected by intervening membrane and there is no 

 point of articulation. 



Second connecting membrane {cmT). The membrane 

 connecting the tegmen to the termination of the 

 abdomen. It is the prepuce of Straus-Durckheim 

 {Melolontlia vulgaris). 



Spicule {sp fig. 224rt). A sclerite attached by one end 

 to the second connecting membrane. In many cases 

 it is Y- or T-shaped. It is the Stengel (Lindemann), 

 spiculum gastrale (Verhoeff), rod or fork (Hopkins), 

 and is considered by some as being the last sternite. 

 It is not infrequently similar in shape to another 

 sclerite that pertains to another layer of the genital 

 tube. 



Stenazygos. Is the stenazygotic or slender portion of the 

 azygos {h-c, fig. 239). 



Tegmen {tg). The term applied to the lateral lobes and 



I 



