Anatomy of the Male Genital Tube in Coleoptera. 539 
Telephorus (Rhagonycha) fulva (Pl. LXXVIII figs. 237, 
237). 
These two figures are intended 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. wt. wall of female passage ; 
od. oviduct. 
Telephorus mgricans. 
Of the type of 7. limbatus. Median lobe slightly bulbous 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. 
Malthinus. 
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 bipustulatus (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 sanguinolentus is the same type as M. bipustulatus. 
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. 
