Ilister.'] 



CLAVICORNIA. 



199 



H. QUADRIMACTTlATirS, L. 



H. UNICOLOR, L. 



The larva of H. unicofor is described and figured by Schiiidtc, De Metamorphosi 

 Eloutheratoruui, Part ii. p. 62, Plate i. fi'j;. 1 ; it is of a dirty-whito colour with 

 the corneous parts fuscous aud the coriaceous parts yellowish ; it is rather broad and 

 almost parallel-sided until the ninth segment of abdomen, which is broad and bears 

 two short cerci com]iosed of two joints ; the head is narrower than prothorax, with 

 very powerful man(Ubles ; ocelli wanting ; antenna) sliort ; prothor;ix large, longer 

 than meso- and nietathorax together, these two latter being very short ; the pro- 

 thorax is deeply channelled in the centre and at sides ; the abdominal segments are 

 contracted at apex and base, aud each is furnished with a row of miuute scuta ia front 

 aud behind ; legs very short, not or scarcely visible from above. 



I. Thorax coarsely punctured on the under surface 

 of margins ; antennal cavities not distinct ; size 

 larger ; elytra with four more or less distinct red 

 markings often confluent 



II. Tliorax with under surface of margins almost 



impunctato ; antennal cavities always well 

 marked ; size smaller. 

 i. Mesosternum emarginate in front, presternum 

 rounded at base. 



1. Elytra with au outer lateral stria abbre- 

 viated behind, aud an inner lateral stria 

 abbreviated in front, not meeting ; three 

 dorsal strljB, as a rule, eutire 



2, Elytra with a continuous outer marginal stria 



only ; four dorsal striaj, as a rule, entire. 



A. Thorax with two striaj near margins. 



a. Form long oval, subparallel ; club of 

 antennaj red ; anterior tibia) with four 

 teeth H, merdaeius, Hqff". 



b. Form short oval ; club of antenna) 



black-brown ; anterior tibiae with 

 5-6 teeth. 



a*. Frontal stria in the form of a 

 semicircle, ofteu obsolete in middle ; 

 average size larger ; epipleura) not 

 rugosely punctured H. CADAVEEINTTS, Hoff. 



h*. Frontal stria always entire, in the 

 form of a semicircle depressed at 

 vertex into an angle pointing back- 

 wards ; average size smaller ; epi- 

 pleura) rugosely punctured .... 



B. Thorax with one stria only near margins. 



a. Lateral stria on elytra abbreviated 

 behind and usually also in front . . . 



b. Lateral stria on elytra entire, 

 a*. Epipleura) smooth ; elytra with a 



large ill-defined reddish spot on each 

 (rarely absent and sometimes suffused 



over the whole elytra) H. purpueascens, Rerbst. 



b*. Epipleurge punctured; elytra 



always unicolorous black, 

 af. Sutural stria of elytra almost 



entire; elytra with a trace of a 



fifth dorsal stria at base;* teeth of 



front tibiie very fine H. maeginatUS, Er. 



H, strcciCOLA, Thorns. 



H, STERCOEARIUS, Ilnff. 



* lu this work the first dorsal stria of elytra is regarded as next the luai-giral 



