Februaiy, 1917.] 



-P 



2M (2.")) Elytral striae becoming obsolete and -y^ °>- - :?^^^|^^1AI i4ffct>(P|j^!ii^<ii n At.n - 

 ration behind, the ninth not merging in the tenth, the interstices 

 with a somewhat irregiilar dovible row of finer punctures... 



cavifrons Clyll. 

 (pubcsrens Herbst.) 



29 (24) Body with scarcely visible pvibescence. (Psblaphorhynchites.) 



30 (31) Front tibiae sinuate within, the inner apical angle produced into a 



claw-like tooth tomentosus Gyll. 



(uncinatus Thorns.) 



31 (30) Front tibiae sti'aight, without any indication of a tooth at the inner 



apical angle. 



32 (33) Larger: male, length 3 mm., female 4.2 mm.; rostrum much longer 



and more slender than in nanus, thorax more closely punctured, with 

 the sides more rounded harwoodi Joy. 



33 (32) Smaller: male, length 2.7 mm., female 3.5 mm. ; rostrum shorter and 



straighter than in harwoodi, thorax less closely punctured, with the 

 sides straighter nanus Payk. 



34 (23) Head constricted into a neck. (Deporaus.) 



35 (36) Entirely black. Head with the eyes narrower than the greatest width 



of the thorax. Hind femora dilated in the male betulae Linn. 



36 (35) Body greenish-bronze, elytra blue. Head with the eyes as wide as the 



greatest width of the thorax. Hind femora simple in both sexes. 



mannerheimi Hummel. 

 {megacephalus Germ.) 



At Foxley Wood, ]S"orfolk, I have found the blue form of B. hetu- 

 leti the prevalent one, but I have from thence green examples (ab. 

 viridis Wasm.) and coppery ones (ab. c^qnnnus Schilsky). The form 

 to which Marsham gave the name nitens has greenish-blue head and 

 thorax and violet elytra ; I have not seen this. 



Mr. W. B. Davis has taken B. jjopidi at Frampton Common, E. 

 Gloucestershire. 



In view of the uncertainty attaching to the determination of 

 B. auratus and B. hacchus, I have been fortunate in securing from 

 Mr. T. Gr. Bishop, the present owner of the S. Stevens Collection, his 

 critical dicta with regard to two historic specimens : the one from 

 Donovan's collection is auratus, and that taken off oak underwood 

 near Cracking Hill, Birch Wood, by B. Standish on September 24th, 

 1843, is hacchus. The latter species is reputed to occur on fruit trees, 

 especially apple, and to fly on sunny afternoons in September and 

 October, hibernating under bark ; and auratus to occur on Primus 

 spinosa from May to July. Walton, who was evidently acquainted 



