430 RHYNCHOPHOKA. [Cryplialus. 



destroyed branch presents the same appearance in an exaggerated form ; 

 the whole bark looks bloated and cracked, and is pierced by the exit 

 holes of the beetles. A branch is often attacked in sufficient force to 

 destroy it in one season, and I have already mentioned my belief that 

 the destruction of a whole tree has been accomplished during the present 

 season. The trunk is rarely attacked till most of the branches are dead, 

 and its vitality is then so much reduced that no distortion occurs from 

 their ravages, except of course that it becomes quite decayed." 



In the ivy growing on these fallen aspen trees Dr. Chapman found 

 Cissopliagus hederce in numbers ; the occurrence of these two usually 

 very rare beetles in abundance and in such close proximity is curious, 

 as showing us that probably very few beetles are really rare if only we 

 can get to understand something of their habits. 



The British species belonging to the genus may be divided as follows : 

 one or two of them are, however, rather difficult to distinguish from 

 descriptions : 



I. Funiculus of antennse five-jointed ; club rather elongate 

 oval, acuminate at apex; thorax and elytra somewhat 

 shiny ; scutellum distinct (Trypophlceus, Fairm. ; G-lyp- 



toderes, Eich.). 

 i. Punctured striaj of elytra not distinct near suture ; 



size smaller; legs pitchy C. BINODULUS, Ratz. 



ii. Punctured striae of elytra distinct near suture ; size 



larger; legs in part yellow C. GRANUI,ATUS, Ratz. 



II. Funiculug of antennae four-jointed; club rather short 

 oval, rounded at apex ; scutellum very punctiform (Cry- 



plialus, i. sp.). 



i. Club of antennae with the sutures transverse, almost 

 straight; body behind thorax only twice as long as 

 broad. 



1. Eyes entire ; thorax with four transverse rows of 



granules in front C. TILI^:, Panz. 



2. Eyes emarginate on their anterior border ; thorax 



confusedly granulate. 



A. Elytra with very short, scarcely visible, hairs; 

 rows of punctures on elytra not very fine and 



placed in somewhat impressed stria? C. ABIETIS, Ralz. 



B. Elytra with long raised hairs ; rows of punctures 



on elytra very fine C. FICEX, Eaiz. 



ii. Club of antennae with the sutures strongly curved; 

 body behind thorax three times as long as broad ; 

 elvtra without striae C. FAGI, Nord. 



C. binodulus, Ratz. (asperatun, var. Gyll., s g. Tnjpopliloeus, 

 Fairm.). Subcylindrical, black or fuscous black, rather shiny, scantily 

 clothed with greyish scale-like hairs and other short hairs ; antenna? 

 and legs pitchy testaceous, club of former often darker than funiculus ; 

 thorax subtransverse, with the sides slightly rounded, anterior margin 

 with four prominences in the middle and with concentric rows of 

 granules, united in places almost into sharp lines ; elytra with feeble 



