Anatomy of the Male Genital Tube in Coleojjtera. 577 



The diversity of these forms is in striking contrast with 

 the homogeneity of Caraboidea, Rhynchophora, Ceram- 

 bycidae. 



Family TROGIDAE (fam. nov.). 



Forms examined : Tqvx omacanthvs Har,, Pusa ; T. 

 scaler L., Brockenhurst ; T. suherosus Fabr., Brazil; T- 

 'penicillatus Fiihr., Hedjaz ; T. sp,, Queensland; T, sp., 

 N. Australia (these two not named in Brit. Mus. Coll.). 

 Glaresis hecJceri Solsky, Transcaspian. Also the following 

 forms classified with the family but not really belonging 

 to it, viz. Cloeotiis rugicejjs Germ., Rio de Janeiro ; C. 

 sinuattis Bates, Guatemala ; Liparochrus timidus Arrow, 

 N. Australia ; Anaides latieollis Har., Mexico ; A. simpli- 

 cicollis Bates, Costa Rica ; Nicagus obscurus Lee, N. 

 America. — For Clocotus, Liparochrus and Anaides vide 

 Coprini in Scarabaeidae ; for Nicagus vide Lucanidae. 



Figs. 1, 2, 2a, 3, 8«, 4, 4«, PI. XLII. 



Trox omacanthus (PI. XLII figs. 2 and 2a). 



Median lobe broad, flattened and rounded at tip, with a alight 

 depression down the dorso-median line ; median orifice across the 

 ventral face of tip, the dorsal tip projecting some distance beyond 

 it. Lateral lobes broad and short, nearly meeting at their bases on 

 the dorsal side, but well separated on the ventral side ; tips pointed. 

 Basal-piece well developed, membranous along the middle on ventral 

 face, chitinous on dorsal face. Internal sac large, covered with short 

 brown hairs ; no chitinous armature. The testes of this species 

 consist of six long, simple, sausage-shaped glands, attached by very 

 short stalks to the ends of the long vasa deferentia, which are 

 not coiled up in a bunch as in T. sraher, q. v. 



Trox scaher (PI. XLII figs. 3 and 3a). 



Median lobe well developed, broad, flattened and truncate at the 

 tip ; median orifice on ventral face near base (mo), two long median 

 struts (fig. 3rt, ms) are articulated to the lateral edges of the base of 

 the median lobe ; point of articulation on dorsal side. Lateral 

 lolies slightly longer than median lobe ; pointed at apex, their bases 

 nearly meeting on dorsal side, far apart on ventral side. Basal- 

 piece forms a broad, flattened, chitinous tube, bent near the base. 

 No differentiated internal sac. 



It is of interest to note that the testes of this species 

 are of a simple form. The vasa deferentia are very long 



