310 niYToriiAGA. [Melatoma. 



antennae, legs and scutellum black, slightly metallic ; head depressed on 

 vertex, antennce short, thickened towards apex ; thorax much narrower 

 than elytra, small, strongly emargimte in front with the anterior angles 

 obtusely piojecting, disc very finely punctured, almost smooth, some- 

 times with traces of a central channel, sides broadly raised, coarswly 

 punctured; elytra ample, less shining than thorax, closely, irregularly 

 and not strongly punctured, with shoulders slightly callose; the thorax 

 is usually greenish, but sometimes bluish or even black. L. 9-11 mm. 



Male with the tarsi moderately dilated, and the last ventral segment 

 short. 



On yonngr poplars and snllows ; lociil, bat not uncommon where it occurs ; 

 Mickleham, Wimbledon, Caterham, Woking; Folkestone; Dover; Hastings; Glan- 

 villes Wootton ; New Forest ; Swansea ; Ely ; Cambridge; Wicken Fen ; Wliittlesea ; 

 York; Scotland, rare, Tweed and Forth districts. 



1*1. long-icolle, Suffr. (tremuJee, Steph.). Very like the preceding in 

 colour and general appearance, but smaller and much narrower and more 

 oblong, with the thorax longer and its disc finely but evidently punctured, 

 and the lateral fold caused by the raised margin deeper; the head is 

 scarcely channelled, and the elytra are more strongly punctured and have 

 no black spot at apex near suture; the last joint of the tarsi also, which 

 is simple in M. populi, is produced into a tooth on each side at apex as 

 in ceneum ; in the male the last ventral segment is short. L. 7 -9 mm. 



On snllows and aspens, in woods ; very local ; Blaekheath, Darenth Wood, Cater- 

 linm, Higligate, Farnham, Colney Hatch, Muswell Hill, Ac.; Dover; St. 

 Leonards ; New Forest ; Swansea ; Cambridge ; Monks Wood; Knoule ; Kdglmston ; 

 Trench Woods; S'. Osyth, Colchester; Langworth Wood, Lincoln, common, in 

 July ; I know of no locality further north. 



Weise (I.e., p. 564) regards M. longicolle as a synonym of M. tremulce, 

 and adds " var. a. elytris apice suturce puncto infusc.ato ; " this variety has 

 usually been regarded as the true M. tremula, which has been sometimes 

 included in the British lists ; it appears, however, to differ so littlo 

 from M. longicolle that Weise is probably right in regarding the two 

 species as identical. 



PHYTODECTA, Kirby. (Gonioctena, Kedt.) 



The species belonging to this genus may be known by having the 

 claws armed with a sharp dentiform appendage reaching beyond middle, 

 and the tibiae produced externally in a sharp tooth at apex ; they are of 

 oval form and not metallic, with the thorax transverse and the elytra 

 punctured in rows; the first and third joints of the tarsi are broader 

 than the second ; the males are smaller and more parallel than the 

 females, and have the tarsi broader; the larvae are elongate, rather dull, 

 and moderately convex, of a brownish-black colour (as in G. viminal'tt), 

 or brownish or yellowish; each segment, except that of the prothorax, is 

 divided into two equal parts by a well-marked transverse furrow, and 



