DYTICID^. — COLYMBETES. 73 



' convex, very obsoletely irrorated with black, with the outer margin and the 

 suture immaculate, and an indistinct paler spot on the outer edge beyond the 

 middle ; the disc has three rather obsolete punctate striae at the base, and a 

 few scattered dots towards the apex : the body beneath shining black, with 

 the margins of the abdominal segments testaceous : the legs are pitchy-fer- 

 ruginous, with the femora pitchy-black. 



Var. jS. With the elytra immaculate testaceous-yellow. 



The Dy. conspersus of Gyllenhal is synonymous with the Co. pulverosus before 

 described. 



Taken sometimes near London; more frequent in the neigh- 

 bourhood of " Southend." — Rev. F. W, Hope. 



Sp. 17. Sturmii. Ovatus, niger, subtilissime reticulato-strigosus, thoracis late- 

 ribus, antennis pedibusque ferrugineis, elytrisfuscis pallido-marginatis. (Long, 

 corp. 4 — 4*^ lin.) 



Dy. Sturmii. Gyllenhal. — Co. Sturmii. Steph. Catal. p. 50. No. 497. 



Ovate, black, very finely reticulate-strigose : head black, with two ferruginous 

 spots placed transversely on the crown: labrum smooth, pale ferruginous : 

 thorax with the disc black, the lateral margins broadly ferruginous ; within 

 the base and apex a transverse line of obsolete compressed dots : scutellum 

 pitchy : elytra large, ovate, rather convex, dusky-brown, the edges indeter- 

 minately ferruginous, and on each elytron three obsolete striae of minute im- 

 pressed dots : body beneath pitchy, finely strigose, with the margins of the 

 segments and the apex ferruginous : legs ferruginous, with the femora, espe- 

 cially the posterior, at the base and beneath, more obscure. 



Var. |3. With the margins of the thorax black, the edge itself obscure ferru- 

 ginous. 



Common throughout the metropolitan district, and near Bristol. 

 Var. /3 I obtained from Devonshire. " Whittlesea Mere." — Messrs. 

 Chant and Bentley. " Very abundant every where in Cambridge- 

 shire." — Rev. L. Jenyns. " Glanville's Wootton." — J. C. Dale, 

 Esq. 



Sp. 18. congener. Ovalis, subdepressus, niger, subtilissime punctulato-substri- 

 gosus, elytris fuscis, margine pallidiori, pedibus ferrugineis , femoribus nigro 

 maculatis. (Long. corp. 3^ lin.) 



Dy. congener. Paykul. — Co. congener. Steph. Catal. p. 50. No. 498. 



Oval, subdepressed, black, very finely punctulate- strigose : head black, with the 

 mouth, labrum, and two transverse spots on the vertex, rufo-ferruginous : 

 thorax slightly convex, glossy-black, the lateral margins above somewhat 

 rufescent : elytra ovate, rather depressed, the back glossy dusky-black, the 

 base and margins indistinctly pale testaceous; each elytron with three distinct 

 striae of impressed dots, the inner regular interiorly, the outer, and all behind, 

 irregular and confused: body beneath pitchy -black, with the edges of the 



