Anatomy of the Male Genital Tithe in Goleoptcra. 559 



8. EuMOLPiNAE. Eumolpus surinamensis F., S. America. 

 Chrysochus pretiosus Fabr., Bohemia. Glyptoscelis cuprascens 

 Lee, California. 



9. Chrysomelinae. Orina elongata Suffr., and 0. 

 sjjeciosa L., Piedmont. Chrysomela sharpi Fowl., Scotland. 

 Gastrophysa raphani Herbst., Scotland. Paropsis variolosa 

 Marsh.?, Sydney. Phytodecta 5-punctata L., Piedmont. 

 PJiyllodecta vitellinae Li., and P. vulgatissima L., England 

 and Scotland. 



10. Galerucinae. Diahrotica soror Lee, California. 

 Galerucella spp., England. 



11. Halticinae. Haltica coryli All, England. 



12. Hispinae. Spiilispa imperialis Baly ?, Australia. 

 Cephaloleia sp. aff. nigropictae Baly ?, S. America. 



13. Cassidinae, 3Icsomphalia pascoei Baly, Ecuador. 

 Aspidomorpha ^-maev.lata 01., Nyasaland. 



Figs. 198 to 216 Pis. LXXII, LXXIII, and LXXIV, 

 relate to these forms. 



Orsodacne nigriccps (PI. LXXII fig. 198). 



Distal half of the median lobe forming a flattened tube, with the 

 ventral edge of median orifice slightly cleft at tip, and projecting 

 beyond the dorsal edge, the basal half formed of two long struts on 

 dorsal aspect. Tegmen forming a ring-piece with cap divided at tip. 

 Internal sac long, projecting much beyond the median foramen. A 

 slightly chitinised cone at the apex carries the opening of the 

 ejaculatory duct. 



The two struts of the median lobe and the long sac 

 place this nearer to the Longicorn type than to other 

 Chrysomelidae. 



Donacia sericea (PI. LXXII figs. 199, 199ff, 199&). 



Median lobe large, chitinous, tubular and curved, with the median 

 orifice at apex and the median foramen large, occupying the ventral 

 face of the basal half (mf). Tegmen forming a ring-piece ; on the 

 dorsal side the cap forms a slender lobe with hairs at the tip on 

 the ventral face. The strut forms a large keel. Internal sac large 

 with complex armature at its apex. This armature consists of a 

 pair of lateral curved plates (c) and a median process {b) through 

 which the ejaculatory duct passes and opens on its tip, a chitinous 

 block (d) supports the structure at its junction with the membrane. 



P. comari. 



Is very like D. sericea but the cap is divided at the tip. The arma- 



P P 2 



