202 Prof. J. C. Schiddte on the Classification 
branch of the organ, runs through its whole length, and then 
doubles back and continues into the extreme end of the spirally 
wound part of the vesicula seminalis: from the point where it 
doubles back, near the extremity of the lateral branch, a long 
slender ceecum arises, of which the inner cavity soon becomes 
obsolete, and which then becomes exceedingly thin and pointed. 
The inner membrane is very firm and tough, and often pushes 
through the surrounding cellular stratum and the.external mem- 
brane in the process of dissection under water. 
The second pair of glandular follicles partly cover the vesiculz 
seminales when the sexual organs are observed from below ; 
they are generally cleft into two branches—one very thick and 
clumsy, behind the top of the ductus ejaculatorius, the other, 
which is more slender, in front of this (Cryptohypnus quadripus- 
tulatus, Lacon murinus, Agriotes aterrimus and marginatus, Am- 
pedus balteatus, Diacanthus tessellatus). In other cases they are 
shaped like bags, the terminal part bent like a ram’s horn 
(Limonius minutus, Diacanthus bipustulatus, Athous vittatus) ; 
or the terminal portion may besides be deeply bifid (A. niger) 
or be furnished at the base with a tubiform arched branch 
(A. ruficaudis, Campylus linearis). In Adrastus limbatus these 
follicles are dilated into the shape of balloons, and are very 
large, almost four times as large as the vesiculee seminales; in 
Cebrio they are likewisevery large, and the bagsof elliptical shape. 
The third pair of glandular follicles attached to the ductus 
ejaculatorius are almost always tubiform, of very varying stout- 
ness and length: only im Adrastus limbatus have they the same 
considerable size and balloon-shape as the second pair of follicles 
possess. 
The penis is narrow, spear-shaped, with a pair of narrow 
valves, which are generally furnished with a small tooth near 
their extreme point. 
The ovaries are divided like the fingers of the hand. The 
number of fingers varies considerably, according to genera and 
species, but generally according to the same rule as that of the 
folliculi of the testes, so that the number is greater in the larger 
species, less in those of smaller size. Their number, however, 
does not generally exactly correspond with that of the folliculi 
testis, as may be seen by the following series of examples :— 
Diacanthus eneus has eighty to ninety fingers, Athous niger 
seventy to eighty, Melanotus castanipes, Diacanthus pectinicornis, 
sjelandicus, and Athous ruficaudis about fifty; Lacon murinus, 
Agriotes aterrimus about forty; Diacanthus tessellatus, Limonius 
cylindricus, Athous vittatus, Campylus linearis about thirty ; Car- 
diophorus asellus, Ampedus sanguineus, Diacanthus bipustulatus, 
Athous subfuscus twenty to twenty-six; Agrivtes lineatus, ob- 
