Anatomy of the Male Genital Tithe in Goleoptera. 551 



Family LAGRIIDAE. 



Forms examined : Lagria hirta L., England. L. f/randis 

 Gyll., Australia. 



Z. hirta. 



Of the Tenebrionid type. Lateral lobes consolidated, forming a 

 very small triangular plate. Basal-piece long, narrow and curved, 

 enlarged at tLe base. Median lobe reduced to a small membranous 

 tongue. 



Family OTHNIIDAE. 



Form examined : Othnius lyncea Pasc, Ceylon. 

 Figs. 172 and 172« PI. LXIX. 



0. lyncea (PI. 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 m.edian lobe as a cap-piece 

 rather than as a 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 AEGIALITTDAE. 



Form examined : Aeqialites dehilis Mann., Vancouver. 

 Fig. 178 PI. 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 



