548 Mr. D. Sharp and Mr. F. Muir on the Comparative 
lobes to allow of median lobe being extended beyond the 
tips of the lateral lobes (fig. 160); and there is no point 
of articulation. At present the family appears to be well 
isolated. 
The consolidation of the lateral lobes into one piece, 
with the inner faces beautifully coadapted to the sides of 
the median lobe is found in a high state of perfection in 
Huchroma. 
Family TENEBRIONIDAE. 
Forms examined: leodes dentipes Esch., California. 
Chiroscelis digitata Fabr., W. Africa. Slaps similis Latr., 
England. Zopherosis georgi White, Australia. Stenosis 
angustata Herbst., Corsica.  Cossyphus tnsularis Casta, 
Sicily. Pediris sp. ? (not in Brit. Mus.) and ? P.? sulcigera 
Boisd., New Guinea. 
Figs. 162-170 Pl. LX VIII and LXIX, relate to Tene- 
brionidae ; fig. 164 being that ofa female structure observed 
in Eleodes dentipes. 
Hleodes dentipes (Pl. LX VIII figs. 163, 163), 
Median lobe short with two large median struts ; median orifice 
forming a longitudinal slit from apex to middle on the dorsal face. 
Lateral lobes consolidated together along their dorsal edges and 
forming atriangular plate with its edges turned under, Basal-piece 
forming a large sclerite on dorsal aspect, pointed at the base. 
Internal sac undifferentiated. 
There is a structure in the female which is at present unique as 
far as our knowledge goes (fig. 164). The basal part of the oviduct 
is greatly dilated (a), a duct (b) which we take to be the duct of the 
spermatheca enters this dilatation and continues as a free coiled 
chitinous tube (c) which reaches the vulvular opening, 
Blaisdell has described and figured both male and female organs of 
many of the American Eleodiini (Smithsonian Inst. U.S.N.M. Bull. 
63, 1909). 
Chiroscelis digitata (Pl. XVIII figs. 165, 165c). 
Tegmen of the usual Tenebrionid type. Lateral lobes small, 
consolidated into a small triangular plate on dorsal aspect. Basal- 
piece large, curved, chitinous on dorsal, membranous on ventral, 
aspect. Median lobe small but distinct, with two median struts. 
Internal sac undifferentiated. 
