Anatomy of the Male Genital Tube in Coleoiytcra. 565 



third. Tegmen V-shape. Internal sac nearly as long as the median 

 lobe, bearing at its apex a curved flagellum slightly longer than 

 the sac. 



Phytodeda olivacca. 



Is near to P. b-pnndaht, but the lateral spines at the edge of the 

 median orifice are greatly flattened, meet on the median ventral 

 line, and curve downward, and are asymmetrical, the right one being 

 produced into a short point on the outer side and the left rounded. 

 Internal sac bearing a flagellum. 



Fhyllodeda vitellinae (PI. LXXIV figs. 212, 212a, 212b). 



Median lobe stout, tubular, constricted one-fourtli from the 

 base ; the ventral edge of median orifice produced beyond the 

 dorsal edge and bluntly pointed ; median foramen occupying the 

 ventral aspect of the basal fourth, on the dorsal aspect of the 

 base is a deep emargination. Tegmen forming nearly a complete 

 ring, but not quite complete on the dorsal face, no trace of cap- 

 piece. Internal sac short, bearing armature in the shape of a 

 flat, curved spine on each side (a) and a median complex plate (6). 



We have examined several of two varieties that go under this 

 name, a blue variety from Forres sand-hills and a southern one, 

 with a bronzy green form ; in these we find a constant difference 

 in the shape of the emargination on the dorsal edge of the base of 

 the median lobe, the northern variety has a round emargination 

 (fig. 212a) and the southern a nearly parallel-sided emargination 

 (fig. 2126). More extended observations on this species are greatly 

 to be desired. We think it possible that there may be two. 



Fhyllodeda vulgatissima. 



This is near to P. ritellinae, but the distal end of the median 

 lobe is more flattened horizontally, and the constriction near base 

 is not so deep. The armature on sac is on the same plan, but 

 more complex and lies inside the median orifice, and when the sac 

 is slightly evaginated entirely alters the appearance of the orifice. 



Timarcha gcnicvlata (PL LXXIV fig. 211). 



Median lobe well developed and chitinised, the ventral edge 

 pointed and produced a little beyond the dorsal edge, the dorsal 

 edge forming a pointed strip over the orifice; median foramen 

 occupying the ventral aspect of the basal third, the dorsal face being 

 cleft, thus making it into a pair of struts {nis). Tegmen forming a 

 ring-piece with a curved plate, or cap, on dorsal aspect, shallowly 



