Anatomy of the Male Genital Tube in Coleoptcra. 539 



Telcphorus (Magomjcha) fulva (PI. LXXVIII figs. 237, 

 237a). 



These two figures are inknded to give an idea of the internal sac of 

 the male, and its relation to the female parts during copula. A 

 portion of the sac (a) bears small spines, ut. wall of female passage ; 

 od. oviduct. 



Telcphorus nigricans. 



Of the type of T. limbatns. Median lobe slightly bidbous at 

 base. Tegmen, forming a cover for median lobe, consisting of a 

 plate slightly emarginate at the distal edge, with a pair of side 

 lobes which are narrow ; this appears to be formed by the lateral 

 lobes and a well developed basal-piece. Internal sac large and 

 complex. 



Fig. 236 PL LXXVIII, was made to show the relations of the 

 parts of the sexes in Telephorus during copula, and was probably 

 made from this species, but the pair from which it was taken is 

 unfortunately not to be found at present. 



IlaltJmms, 



Figs. 235 and 238 PL LXXVIII have been made to give an 

 idea of the structures during copula. They were probably drawn 

 from M. flaveolus : the pair has unfortunately been mislaid. 



Malachius lipustulatus (PL LXV fig. 142). 



Median lobe long tubular, slightly enlarged on the basal half 

 where it is membranous on the ventral face. Tegmen consisting of 

 a cap-piece on the dorsal face, the basal angles meeting together 

 beneath the median lobe ; the central part of the cap-piece (m) is 

 membranous. The tegmen thus forms a ring-piece through which 

 the median lobe passes. Internal sac not examined. 



Anthocomus sanguinulentiis is the same type as M. hipustulatus. 



Balanophorus mastersi (PL LXV fig. 143). 



This is a most abnormal type in which the tegmen appears to be 

 reduced to a minimum ; at present we cannot connect it with any 

 other Malacoderm. 



Median lobe large, the distal part tubular, the basal part bulbous. 

 The dorsal and ventral faces are chitinous, with large membrane 

 (m) between : the median orifice is at the distal end, and the 

 median foramen small and situate on the ventral face of the basal 

 end. The tegmen consists of a pair of very small lateral lobes 

 situate on the ventral face of the median foramen. Internal sac 

 large. 



