123 



lateribus a quasi-apice ad medium subrectis fere parallelis 

 hinc ad basin fortiter sinuatis, angulis anticis (superne visis) 

 late obtusis sed sat bene determinatis posticis valde obtusis 

 (ad apicem summum vix subdentiformibus), carinse lateralis 

 apice a segmenti margine antico late (circiter oculi diametro) 

 distanti, parte basali utrinque foveata ; elytris punctulato- 

 striatis (striis subsuturalibus 2 subtiliter, ceteris sat grosse, 

 punctulatis), interstitiis alternis convexis (3° ad basin et 

 apicem, 5° 1" que totis, cariniformibus alternis vix convexis 

 (omnibus fere impunctulatis), humeris prominentibus. Long., 

 5 L; lat., \^ 1. 

 This species is extremely close to B. piceus, Germ., indeed the 

 only differences that I can specify are in the greater convexity of 

 the head between the eyes and in the form of the prothorax, — 

 but the latter is so strongl}^ marked that I cannot but consider it 

 specific. Viewed from above the apparent front margin of the 

 pronotum (closely examined it is seen to be not the true front 

 margin but the interval between the apices of the lateral carinas 

 of the segment) joins the lateral margin by a very open but 

 quite distinct angle from which the sides of the segment are 

 straight and parallel to the middle of their length ; whereas in 

 piceus (viewed from above) the apparent front margin is the real 

 one and the front angles appear quite rounded off, the sides of 

 the segment diverging in a curve from the front to the middle so 

 that at its middle the prothorax is considerably wider than in 

 front. The form of the quasi-front margin of the pronotum in 

 D. fhoracicus is almost exactly as in D fossus, Newm., but in 

 that species the sides are different (converging in a curve hindward, 

 so that the width of the segment across the middle is notably less 

 than across the quasi-front angles). I have examined a consider- 

 able number of South Australian examples (and a few Victorian) 

 of D. piceus and find no variation whatever in the form of the 

 prothorax. 



Victoria, Glenelg River district. 



D. Bakeivelli, Pasc. Tf my identification of this insect (which 

 I have from N.S. Wales, Victoria, and Tasmania) is correct 

 (about which l have little doubt) it is even closer to D. piceus 

 than is D. thoracicus ; nevertheless, I believe it to be a valid 

 species. All the examples that I have seen are of a dark 

 ferruginous colour (certainly not due to immaturity) and are 

 evidently more nitid than examples of piceus ; the prothorax, 

 too, is a little narrower behind and (therefore) with its sides a 

 little more strongly rounded. Unless I am uniting two species 

 under this name D. Bakewelli varies extremely in size, one ex- 

 ample from the Victorian mountains being less than 3 lines long, 

 while the largest (from N.S. Wales) is more than 5 lines. The 



