jji/schiriui^.'] ADEniAGA, 21 



13. Interstices of elytra flat ; stria) plainly 

 punctured. 



a. Lateral border of elytra ceasing at shoulder 



or very indistinctly prolonged. 

 a* Elytra narrow, cylindrical, with stria? 



finer and punctures wider apart . . D. POLITUS, DeJ. 

 h* Elytra oblong, with stria; coarser and 



punctures nearer together . . . . D. nitidus, DeJ. 



b. Lutoral liorder of elytra clearly prolonged 



from shoulder in a fine raised line to 



peduncle ; elytra cylindrical . . . . D. EXTENStrs, Pufz. 

 2. At least the lower tooth on the outer side of 

 the anterior tibia) distinct. 

 A. Lateral margin of elytra prolonged from 



shoulder D. angustatus, Ahr. 



li. Lateral margin of elytra not or very feebly 

 prolonged from shoulder. 

 a. Thorax somewhat parallel-sided ; elytra 



cylindrical D. SALINTS, Schaum. 



h. Tlioras almost circular ; elytra oblong 



ovate D. jeneus, Dej, 



n. Dorsal striie on elytra eSaced on sides and towards 

 apex ; sutural stria shortened at base, entire at 

 apex ; species very small D. globostjs, Herhst. 



D. thoracicus, Rossi. Shining bronze, sometimes shining black or 

 lull black, occasionally reddish ; head small, deeply furrowed on each side 

 between the eyes ; mouth parts (except tips of mandiljles), basal joint of 

 anteim;c and base of two next joints red ; clypeus with three teeth, the 

 centi'al one more or less distinct ; thorax very globose with a strong 

 dorsal furrow deepest at base ; elytra ovate, slightly narrowed in front 

 with rounded shoulders, with rather fine and distinctly punctured strife, 

 the third interstice with two or three impressions, marginal stria reach- 

 ing beyond humeral angle; anterior tibia3 acutely dentate externally, 

 with the apical tooth largest ; legs more or less ferruginous, femora 

 (esjiecially the anterior pair) darker, or quite black. L. 3| mm. 



Sandy' places on the coast ; under stones or in damp places ; Bridlington in pi'O- 

 fusiou in company with Slediurs arenarius ; Chesil Hoach ; Kent (not common); 

 Newcastle-on-Tyue ; and many other places. Scotland only recorded from one 

 locality, Aberlady, where it is common. Ireland, near Dublin. 



D. obscurus, (Jyll. This species appears to come very close to the 

 preceding, of which it has been considered a variet3\ Gyllenhal, in his 

 description (Insect. Suec. iv. 45G), describes it as exceedingly like 

 I), tlioracicus, but shorter, smaller, with the antenniB and legs more 

 rufous and with the striae of the elytra scarcely punctured. Dawson 

 ((Jeod. Brit. p. 29) compares it with D. salhms, and says that it is 

 shorter and narrower than that insect, and may be recognized by its 

 elongate and cylindric f(jrm, and more especially by the deeply impressed 

 striae on the elytra, which are entin'ly smooth and impunctate ; the colour 

 appears to be obscure brassy or greenish black. Length about 3 mm. 



Introduced as Uritish on the authority of M. Putzeys. who said that JI. Heiche 

 possessed a specimen taken in England ; afterwards recorded by Ilaiiday from Longh 



