Anatomy of the Male Genital Tube in Coleoptera, 577 
The diversity of these forms is in striking contrast with 
the homogeneity of Caraboidea, Rhynchophora, Ceram- 
bycidae. 
Family TROGIDAE (fam. nov.). 
Forms examined: Zyvox omacanthus Har., Pusa; 7°. 
scaber L., Brockenhurst; 7. suberosus Fabr., Brazil; 7. 
penicillatus Fahr., Hedjaz; 7. sp., Queensland; 7. sp., 
N. Australia (these two not named in Brit. Mus. Coll.). 
Glaresis beckert Solsky, Transcaspian. Also the following 
forms classified with the family but not really belonging 
to it, viz. Cloeotus rugiceps Germ., Rio de Janeiro; C. 
sinuatus Bates, Guatemala; JLiparochrus timidus Arrow, 
N. Australia; Anaides laticollis Har., Mexico; A. simpli- 
cicollis Bates, Costa Rica; Nicagus obscurus Lec., N. 
America.—For Cloeotus, Liparochrus and Anaides vide 
Coprini in Scarabaeidae ; for Vicagus vide Lucanidae. 
Figs. 1, 2, 2a, 3, 3a, 4, 4a, Pl. XLIT. 
Troz omacanthus (Pl. XLII figs, 2 and 2a). 
Median lobe broad, flattened and rounded at tip, with a slight 
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 7’ scaber, q. v. 
Tro« scaber (Pl. 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. 3a, ms) are articulated to the lateral edges of the base of 
the median lobe; point of articulation on dorsal side. Lateral 
lobes 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 
