AnoUoTwj (if the Male Genital Tube in Coleoptera. 523 



and a basal plate with the basal angles jjroduced into struts {h) which 

 embrace the side, but are not consolidated together on the ventral 

 aspect, of the median lobe. Internal sac long (the apex broken and 

 not examined). 



This type approaches the Phalacridae and also the 

 Erotylidae. 



Family EROTYLIDAE. 



Forms examined : Megalodacne sp., New Guinea ; M. 

 grandis Fabr., Natal. Cypher otyhis onagga var. Lac, S. 

 America. Cryptodacne vittata Broun, New Zealand. 

 Camptocarpus prolongatus Crotch, Chiriqui, Bouhled.aya 

 sp., Siam. 



Figs. 107 and 108, and 108a PI. LX. 



Megalodacne sp., New Guinea. 



Has a tubular, curved median lobe, a very large cap-piece bearing 

 very small lobes. Internal sac more than twice as long as the median 

 lobe with chitinous flagellum half as long as sac. 



Megalodacne grandis, Natal, is similar to the above but with 

 internal sac only a little longer than median lobe and flagellum nearly 

 as long as the sac. 



Cryptodacne vittata (PI. LX figs. 108, 108rt). 



Median lobe short, wide and slightly flattened ; median- orifice at 

 tip ; median foramen large, at base, with long strut from the dorsal 

 edge of median foramen. Tegmen forming a ring, with large cap 

 on dorsal aspect from the apex of which rise two short lobes. In- 

 ternal sac large with armature at apex ; this armature consists of a 

 curved process, chitinous on ventral and membranous on dorsal 

 (/j) aspect, with the opening at the tip; dorsal of this process is 

 another consisting of a brush-like organ (c). 



Camp)tocarpus p)rolongatus (PI. LX fig. 107). 



Median lobe long, thin, tubular, and curved near the base ; 

 median orifice at apex, the ventral edge produced into a point ; 

 median foramen at base ; from the dorsal edge of the median 

 foramen proceeds a long strut {ms) bifurcate at end. Internal sac 

 long with a chitinous flagellum rising from apex nearly half as long 

 as the sac. 



Duahledaiia, sp. ? (Siam) has the terminal lobes of the cap short 

 (shorter than in Cryptodacne vittata, fig. 108) but the cap itself 

 is rather longer. Internal sac not examined. 



