DYTICID/E. — COLYMBETKS. 81 



the forehead obscure ferruginous, with two transverse red spots on the vertex : 

 thorax black-brass: elytra very oblong, narrow, scarcely dilated in the middle, 

 attenuated towards the apex, convex, immaculate blackish-brass, the margin 

 concolorous, with three rows of irregular minute impressions on the disc : 

 body glossy pitchy-black beneath : legs pitchy-black, with the joints and an- 

 terior tibia? rusty-piceous. 

 Var. &. With the four anterior legs entirely ferruginous. 



Not common ; taken in the metropolitan district. 



, bp. 35. vittiger. Oblongo-ovatus, nigro-asneus, palpis antennisque ferrugineis, 

 pedibus rufo-piceis, elytris lined unicfi later alt rufescente abbreviatd. (Long, 

 corp. 4^ lin.) 



Dy. vittiger. Gyllenhal?— Co. vittiger. Stepk. Catalp. 49. No. 483. 



Black or brassy above ; and, with a powerful glass, the entire surface appears 

 covered with net-like strigae: head with two transverse oblong rufescent 

 spots on the vertex : the palpi ferruginous : thorax immaculate : elytra rather 

 elongate, blackish-brass, with the margin concolorous ; each with three rows 

 of large distinct irregular impressions, and a reddish rather oblique, and some- 

 times nearly obsolete, line towards the middle of the lateral margin : body be- 

 neath brassy-black, obsoletely punctate : legs pitchy-red, anteriorly paler. 



This species appears to be in the collection at the British Mu- 

 seum, unnamed; it was taken by Dr. Leach in Devonshire four 

 years since. 



Sp. 36. guttiger. Oblongo-ovatus, niger, subconvexus, subtiis piceus, elytris lineold 

 punctoque fulvo-fenestratis, pedibus piceo-ferrugineis. (Long. corp. 4 — 4^ lin.) 

 Dy. guttiger. Gyllenhal. — Co. guttiger. Steph. Catal. p. 51. No. 514. 



Oblong-ovate, black, somewhat convex, finely punctulated : head with the mouth 

 and palpi rufo-ferruginous, with two transverse rufous spots on the crown : 

 thorax rather convex, black, the anterior angles slightly ferruginous : elytra 

 large, ovate, rather broader in the middle, anteriorly moderately convex, be- 

 hind rather depressed, entirely black, with the margin concolorous ; on the 

 disc of each elytron are three rows of very obsolete minute impressions, very 

 irregularly disposed ; a little behind the middle, near the margin, is a narrow 

 reddish-yellow transparent streak, and a round spot of the same colour within 

 the apex : body beneath black, or pitchy-black, rather glossy : four anterior 

 legs dull rufescent, the posterior pitchy-ferruginous. 



Var. 0. Co. immunis. Steph. Catal. p. 49. No. 484. With the rows of impressed 

 dots on the elytra extremely obsolete ; visible only with a powerful glass. 



Not common near London; I have twice captured var. a. All 

 the specimens that have come under my inspection of var. (3. were 

 taken as below. " Pools, Netley."— Rev. F. W. Hope. Var. j3. 

 " Ponds in Bewdley-forest, Worcestershire. " — Messrs. Cooper and 

 Ingpen. 



Mandibulata. Vol. II. 1st Sept. 1328. g 



