548 Mr. D. Sharp and Mr. F. Miiir 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 

 Michro7na. 



Family TENEBRIONIDAE. 



Forms examined : Eleodes dentines Esch., California. 

 Chiroscelis digitata Fabr., W. Africa. Blaps similis Latr., 

 England. Zopherosis georgii White, Australia. Stenosis 

 angustata Herbst., Corsica. Cossyphns insnlaris Cast., 

 Sicily. Pcdiris sp. ? (not in Brit. Mus.) and ? F. ? sulcigera 

 Boisd., New Guinea. 



Figs. 162-170 PI. LXVIII and LXIX, relate to Tene- 

 brionidae ; fig. 1G4 being that of a female structure observed 

 in Eleodes dentipes. 



Eleodes dentipes (PL LXVIII 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 a triangular plate with its edges turned under. Basal-piece 

 forming a large sclerite on dorsal aspect, pointed at tlie 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 (6) 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, 165«). 



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 bnt distinct, with two median struts. 

 Internal sac undifferentiated. 



