510 Mr. T. Vernon Wollaston on the 



Dryophthorides distinctly 5-jointed (the fourth one in that 

 subfamily not being minute and hidden, but appreciable 

 arid unreceived).- Yet so completely was Lacordaire led 

 into error by the original diagnosis, that he not only 

 accepted the insect (on account of the supposed structure 

 of its fttniculus) as a Dryophthorid, but naturally enough 

 felt compelled so far to modify the characters of that well- 

 defined subfamily so as to admit within its bounds the 

 ordinary pseudotetramerous foot ! It is, however, in re- 

 ality, a normal member of the Pentarthrides, and is very 

 intimately related to my genus Pentacoptus which was 

 detected by Mr. Gr. Lewis in Japan. It completely lacks, 

 moreover, the fusiform, or subelliptic, outline of the Dry- 

 ophthorides ; whilst its exceedingly incrassated legs and 

 tarsi are in strange contrast with those of that subfamily 

 in which those parts are comparatively thin and wiry ; 

 and its eyes (instead of being sunken, transverse, and de- 

 pressed) are rounded and very prominent as in the Pen- 

 tarthrideous Pentacoptus. Its metasternum too is shorter 

 than that of the Dryophthorid.es; and its four anterior 

 coxaa are perceptibly more approximated. 



From the Japanese Pentacoptus (to which it is inti- 

 mately allied), Ch&rorrhinus differs mainly in its larger 

 size and less narrowed prothorax, in the cariniform struc- 

 ture on either side of its elytral apex, in its anterior coxa3 

 being rather less widely separated, and in its first and 

 second abdominal segments being divided by a very deeply 

 sinuated line, instead of a perfectly straight one. 



The Chcsrorrhini appear to occur in southern Europe, 

 the genus having been first met with in Sicily. 



8. PENTACOPTUS (Wollaston, Trans. Ent. Soc. Lond. 

 12. 1873). In its very coarsely sculptured and opake, 

 though somewhat besmeared surface, its short, broad, 

 parallel rostrum, nearly obsolete scutellum, and costate 

 elytra, the present remarkable little genus has almost as 

 much in common, at first sight, as Charorrhinus has, 

 with the Dryophthorides ; nevertheless its 5-jointed funi- 

 culus, and its small, rounded, and prominent eyes, in con- 

 junction with its elytra showing no traces of the peculiar 

 cariniform structure at their apex which is so marked a 

 feature in that group, its comparatively incrassated legs, 

 and its ordinary pseudotetramerous feet (the third joint of 

 which is a good deal widened and bilobed), will of them- 

 selves at once remove it from the members of that sub- 



