Anatomy of the Male Genital Tube in Coleoptera. 551 
Family LAGRIIDAE. 
Forms examined: Lagria hivta L., England. L. grandis 
Gyll., Australia. 
L. hirta. 
Of the Tenebrionid type. Lateral lobes consolidated, forming a 
very small triangular plate. Basal-piece long, narrow and curved, 
enlarged at the base. Median lobe reduced to a small membranous 
tongue. 
Family OTHNIIDAE. 
Form examined: Othinius lyncea Pasc., Ceylon. 
Figs. 172 and 172a Pl. LXIX. 
O. lyncea (Pl. LXIX figs. 172, 172a). 
Median lobe short, pointed, with broad, curved strut (ms) from 
the dorsal, basal edge. Lateral lobes consolidated into a large. 
pointed cap-piece, with its lateral edges turned under. Basal-piece 
large and curved. We are in doubt as to the dorsal and ventral 
aspects. 
We meet here with a departure from the Tenebrionidae. 
The basal-piece is not preponderant, but the lateral lobes 
are large, and include the median lobe as a cap-piece 
rather than asa sheath. The structures in our specimen 
are very feebly chitinised and somewhat difficult to make 
out. The position the family occupies in the Munich 
Catalogue is better than one near Tenebrionidae. Othnius 
cannot go in the trilobe forms because of the hooding of 
the median by the lateral lobes. So that at present it 
appears least ill-placed in the loosely connected complex 
we have called Cucujoidea. 
Family AEGIALITIDAE. 
Form examined : Aegialites debilis Maun., Vancouver. 
Fig. 173 Pl. LXIX. 
Median lobe long, slender, tubular and membranous, supported 
along each side by a chitinous rod (a) which widens out at the base 
and forms a ring round the median foramen (b). Tegmen forming a 
large dorsal cap composed of two large sclerites, the distal one 
(lateral lobes) broad, curved and coming to a point at apex, bearing 
a pair of small lobes near its base, its basal angles are produced into 
struts which are attached to the base of the median lobe; the 
