482 Mr. D. Sharp and Mr. F. Muir on the Comparative 
veloping it. They are the “deux branches de la 
pince” (Straus-Durckheim) ; mesostili in Procrustes, 
ipofallo in Lucanus and perifallo in Dytiscus (Berlese) ; 
apicale (Blaisdell), lateral lobes (Packard), Parameren 
(Verhoeff). 
MEDIAN FORAMEN (i). The aperture, or lumen, at the 
base of the median lobe through which the ejaculatory 
duct passes. 
MEDIAN LOBE (m/). 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, 
proceeding 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 lne of demarca- 
tion. 
POINT OF ARTICULATION (pw). 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 (cm2), The membrane 
connecting the tegmen to the termination of the 
abdomen. It is the prepuce of Straus-Durckheim 
(Melolontha vulgaris). 
SPICULE (sp fig. 224a). 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. 
Srenazyaos. Is the stenazygotic or slender portion of the 
azygos (b-c, fig. 239). 
TEGMEN (¢g). The term applied to the lateral lobes and 
