BY WILLIAM MACLEAY, F.L.S., &C. 141 



Sub-Family. TRIGONOTOMIDES. 

 10, Lesticus politus. Chaud. 



Ann. Soc. Ent. Belg., Tome XL, p. 156. 



There are eight other species of Uarabidso in the collection, all 

 with one exception represented only by single specimens. I find it 

 consequently impossible without sacrificing the specimen, which 

 I have no authority to do, to make out with any exactness the 

 genus of any one of them. I simply therefore number them. 



11. Resembles in form Plochionus. 



12. Probably a Golpodes. 



13. Near Thyreopterus. 



14. Near Thyreopterus. 



15 and 16. Near Coptodera. 



17. Fam. Harjoalidce. 



18. Cyrto-pterus % 



Family. DYTISCID^E. 

 19. Hydaticus flavocinctus. Gruer. 

 Yoy. Coquille, II., p. 61, t. 1, fig. 18. Aube Spec, p. 169. 



20. Copelatus politus? Sharp. 



Sharp on Dytiscidse, p. 568. 



I have some doubts as to this species. 



Family. GYRINID^]. 



21. Enhydrus Albertisi. Regimb. 

 Ann. Mus. Civic. Genoa. Yol. XYIIL, p. 70. 



22. Enhydrus Frogga/tti. n. sp. 



This species differs from E. Albertisi in being much smaller, 

 in being less nitid but more of a bronzy hue, in having 'the 

 scutellum much smaller, and in having the elytra much more 

 distinctly marked with opaque striae. 



Length, 7 lines. 



