Anatomy of the Male Genital Tuhe in Coleoptera. 489 



Blethisa multipunctata. 



The aedeagus of this species is remarkable by the small area 

 of the median lobe that is chitinised, the larger part of the lobe 

 being membranous. This species has also a very peculiar feature, 

 inasmuch as a long strut extends forwards. This strut appears to 

 be a process of the internal sac, and has nothing in common with 

 the strut of Dytiscidae that at first sight appears to be similarly 

 placed. It is unfortunately too late to add a drawing of this 

 interesting structure to our plates. 



Mormolyce phyllodes (PI. XLVII figs. 33 and 33a). 



Median lobe very short, stout, and funnel shaped ; median orifice 

 large, across distal end, the edge of left side being drawn out 

 into a narrow tongue; median foramen large, across base of lobe, 

 with lateral lobes attached to edge on dorsal side. Left lateral 

 lobe small and flattened, right lobe double the size of left. Internal 

 sac when evaginated twice as long as median lobe, with blunt short 

 diverticula near apex and tlie apical part granulated. It is possible 

 that the sac as figured is not entirely evaginated near apex. 



In this paradoxical insect, the articulation between the lateral 

 lobes and the median seems to be imperfect, but our preparation is 

 from an immature example. 



Pheropsophus agnatus (PI. XLVIII fig. 35). 



Median lobe short, pointed ; median orifice occupying median 

 portion on ventral side of lobe ; median foramen basal. Lateral lobes 

 small, irregular and sub-equal. Internal sac large, with blunt, short 

 diverticula near base and on ventral side. 



Anthia sexyuttatc. 



Median lobe forming an irregular tube, abruptly bent up dorsally 

 near base ; median orifice a narrow slip along one-fourth of tube on 

 ventral side near apex, continuing as a depression to near bend at 

 base ; median foramen at basal end. Lateral lobes small, thick and 

 irregular, right laiger than left. 



Tefflns clijflcilis. 



Very solid tubular median lobe, somewhat asymmetrical, Avith 

 short thick lateral lobes attached to its dorsal basal point, the 

 right lateral lobe larger than the left; median orifice at distal 

 end, median foramen at basal end, slightly dorsal. Internal sac 

 large, complex, covered with chitinous granulations. 



