PHTTOPHAGA. 355 



or absence of a furrow on the upper surface ami its shape, the forma- 

 tion of the apex (whether rounded truncate or angled), and the relative 

 width of the longitudinal striae on the under surface ; the larv do not 

 call for any particular remark, being yellowish, or brownish-yellow, 

 cylindrical grubs, somewhat narrowed behind, with the head, prothorai, 

 legs and th plate covering the anus black ; the upper surface is set 

 with fine granulations and larger black tubercles ; the chief part of the 

 following table is taken from Weise (I.e. p. 830). 



I. Mandibles with three teeth, gradually decreasing in 

 length, the lower one sometimes obsolete ; frontal 

 tubercles usually well defined, larger than the 

 circular borders round the base of the antennae ; 



average si EC larger. 

 i. Thorax narrower, about half as broad at base as 



elytra at shoulders, with comparatively broad side 



margins, which, if viewed from above, are visible 



as far as the anterior angles H. TAMAKICIS, Schrank. 



it. Thorax at base almost as broad as, or evidently 



narrower than, elytra, with nurrow side margins, 



which, if viewed from above, are hidden on the 

 front half at all events near the anterior angles. 



1. Upper surface of thorax and elytra, if viewed 

 sideways, forming a continuous outline ; elytra 

 only a little broader than the thorax with the 



callosities at shoulders less pronounced. 



A. Elytra gradually widened behind, broadest 

 behind middle ; third joint of antennae only 

 a little longer and narrower than the second ; 

 colour usually dark blue ; punctuation of 



elytra finer H. LTTHRI, JM. 



B. Elytra subparallel until behind middle; third 

 joint of antennae twice as long and plainly 

 narrower than second; colour greenish-blue; 



punctuation of elytra stronger H. ERICBTI, All. 



( <J longicollu, All. ?). 



2. Elytra raised and then depressed at base, not 

 forming a continuous outline with thorax, if 

 viewed sideways, considerably broader at base 

 than thorax, with the shoulders and humeral 

 callosities more pronounced ; colour green or 



bluish-green (H. AMPEIOPHAOA, G*(r 



(coryli, Brit. Cat.) 



II. Mandibles with four terth, of which the two middle 

 one* are long and rather large; frontal tubercles 

 ill-defined, hardly as large as the circular borders 



round the base of the antennae ; site smaller, 

 i. Klvtra with rather strong rows of punctures on the 



anterior portion of disc, which become feebler 



behind, upper surface thickly alutaceous; suture 



of elytra, as a rule, foveate before apex .... H. OLRRACBA, L. 

 ii. Elytra with confused and more or less shallow 



punctures, not thickly, and exceedingly delicately, 



alntaceous ; suture of elytra, as a rule, not foveato 



before apex. 



A a 2 



