OUR IMMIGRANTS OF PHYRXUS LIVORNICA. 311 



by Ganglbauer in his Die Kafcr rem Mitteleuropa under the tribe L'ohj- 

 diini, this being a tribe of the subfamily Coh/iliinae, a division of the 

 family Colydiidae. The tribe Colydiini contains according to Gangl- 

 bauer two genera — Colydiiitu and Aidonium — the two genera being 

 separated by the following characters: — Lnlydinm. — Thorax with a 

 deep central furrow. The alternate (odd) interstices of the elytra 

 raised in the form of ribs. Aulonium. — Thorax with two central fur- 

 rows, which approach one another in the front. All the interstices of 

 the elytra even. The genus AnUmiinn contains two European species, 

 siilcatuiii, 01., and ruficornc, 01. The synonymy of sidcaticm is as 

 follows : — 



Anlonium xulcatim, Oliv., Entom., ii., 18, 4, pi. 1, f. 1 ; Erichs., Natitru. Ins. 

 Deutschl., iii., 276; Sturm, Deutschl. Ins., xx., 43, t. ccclxvii. f. A; Reitt., Verh. 

 Nat. Ver. Brimn, xx., 1881, 132; Fabr., Ent. Syst., i., 116. Trisulcum, Fourcr., 

 Entom. Paris., [., 1785, 23. Bicolor, Fabr., Syst. EL, ii., 555. 



The following is a rough translation of the description given by 

 Herr Ganglbauer in Die Kiifer run Mitteleuropa, vol. iii., p. 852 : — 

 Orange-coloured, somewhat smooth and shining, the back of the head 

 and the central part of the thorax brownish ; the suture of the elytra, 

 especially towards the apex, blackish ; frequently the whole insect is 

 orange-coloured. The head large and finely punctured, the hinder 

 part being more strongly punctured. The thorax almost as broad as 

 the elytra and about as long as broad, with fine and scattered punc- 

 tures. The two central furrows of the thorax gradually run together 

 as they proceed from the base to the centre of the thorax, and are then 

 either parallel or slightly divergent. The two side furrows of the 

 central portion of the thorax are united in the front by a deep furrow 

 running close to the frontal edge of the thorax. The elytra have fine 

 regular rows of punctures, the interstices bemg very finely and 

 sparingly punctured. L. 4^-7mm. Localities : — Middle and southern 

 Europe ; under elm bark in the burrows of Scolytiis destructor and S. 

 midtistriatus : rare. 



The larva of this species is described by Westwood in his Intro- 

 duction to the Modern Classification of Insects, vol. i., p. 147, and there 

 is an illustration of the larva in fig. 12 on p. 146. 



Our Immigrants of Phryxus livornica in 1904. 



By .J. W. TUTT, F.E.S. 



The account of the migrating habits of Phryxus livornica, so far 

 £h& they have been ascertained, have been so recently published {Nat. 

 Hist. Brit. Lep., iv., pp. 158 et scq.) that there is no need to repeat the 

 facts, and it would serve no purpose to recount all the years in which 

 the fringe, as it were, of an immigrating band has reached Britain, as 

 these are also readily available {op. cit., pp. 161 et seq.). Suffice it to say 

 .that in 1858, 1860,^1862, 1867, 1879, 1888, 1892, and 1893, only the 

 spring and early summer immigrants themselves were observed, no 

 autumnal progeny having been noticed, and it must be assumed that these 

 years were unsuitable to them in this country; in 1865 and 1868 the 

 immigrants apparently did not come to Britain till the autumn, although 

 the single spring capture in 1868 suggests that the autumn imagines 

 may have been the offspring of overlooked spring arrivals, whilst in- 

 1870, the spring immigrants appear to have done unusually well for 



