DYTICJD^.-r-COLYMBETES. 7& 



Var. y. Thorax with an interrupted yellowish fascia; the elytra with very small 



simple spots. 

 Var. &. Thorax with an interrupted yellowish fascia ; the margin of the elytra 



ahove pale. 

 Many other intermediate varieties occur. 



Rare near London ; more frequent in Devonshire, and near 

 Bristol. " Cherwell, Oxfordshire, Brooks, Netley; and near Bux- 

 ton." — Rev. F. W. Hope. " In great plenty, in one running 

 stream near Bottisham, but not elsewhere in Cambridgeshire.*" — 

 Rev. L. Jenyns. " Glanville's Wootton." — J. C. Dale, Esq. " Not 

 uncommon near Kimpton." — Rev. G. T. Rudd. 



Sp. 21. ahbreviatus. Ovatus, niger, capite rufo, elytris fascid undulatd abbre- 

 viate? baseos, maculisque duabus marginalibus pallidis. (Long. corp. 3^ lin.) 



Dy. abbreviatus. Fabricius.— Co. abbreviatus. Steph. Catal. p. 50. No. 501. 



Ovate, black, finely punctulate : head smooth, obscure-rufous, with a fuscous 

 spot on the crown : thorax posteriorly subsinuated with obtuse angles ; above 

 moderately convex, pitchy-black, with the lateral margins irregularly fer- 

 ruginous ; within the apex a continuous stria, and at the base another, inter- 

 rupted in the middle, of impressed dots: elytra oblong-ovate, moderately 

 convex, shining black, the lateral margin unequally ferruginous, the disc 

 with three punctate lines ; near the base a narrow waved, pale-testaceous, 

 transverse fascia, united to the margin, but not reaching to the sutures ; a 

 little beyond the middle, near the margin, a duplex spot, sometimes divided, 

 of the same colour, and within the apex a minute one : body beneath glossy- 

 black, the segments of the abdomen and its apex margined with ferruginous : 

 legs rufescent. The duplex spot near the middle of the margin is frequently 

 united by a longitudinal streak to the anterior fascia, at the shoulder. 



I believe this species has not been found nearer to London than 

 Windsor, and even there but sparingly ; it is sometimes found in 

 Norfolk. « Windsor:'— Dr. teach. " Larden, Salop."— Rev. F. W. 

 Hope. " Whittlesea Mere abundantly." — Messrs. Chant andBentley. 



Sp. 22. vitreus. Ovatus, niger, elytris lavibus nigro-osneis } striis tribus simplici 

 serie punctatis, macula laterali didyma punctoque apicis albido fenestratis. 

 (Long. corp. 4 lin.) 



Dy. vitreus. Paykul. — Co. vitreus. Steph. Catal. p. 50. No. 502. 



Ovate, black, smooth: head generally rufo-testaceous anteriorly, with two reddish 

 spots on the crown: thorax sinuated behind, moderately convex, slightly 

 seneous, with the lateral margin rusty-piceous : elytra oblong-ovate; moderately 

 convex, smooth, glossy, brassy-black, with the margin concolorous ; a little 

 beyond the middle, near the outer margin, is a large duplex whitish spot, and 

 near the apex a smaller simple one, entirely bifid, and both subpellucid ; the 

 disc of each elytron has three regular punctate striae : body beneath black; or 



