508 Mr. T. Yernon Wollaston on the 



given, the only member of it for which I am at present in 

 a position to vouch ; and that one appears to be common 

 in the Japanese archipelago, having been met with by 

 Mr. G. Lewis near Nagasaki in the island of Kushiu, and 

 at Hiogo in the island of Nipon. 



6. SYNOMMATUS (nov. gen.}. If there had been any 

 question concerning the intimate relationship which exists 

 between the Dry ophthor ides and Pentarihrides (of which 

 I have never myself entertained the slightest doubt), it 

 would have been thoroughly dispelled by a genus like the 

 present one, which, although pertaining to the latter, is 

 at first sight so unmistakeably a Dryophthorid that it is 

 difficult to conceive that it can belong to any other group. 

 Yet the most essential features of that well-marked sub- 

 family, namely a 4-jointed funiculus and ordinary penta- 

 merous feet, are entirely wanting to it, the former in 

 Synommatus being ^/zz^-articulate, and the latter on the 

 usual Rhynchophorous pattern. Yet so marvellously do 

 its external facies, sculpture, and clothing, no less than its 

 narrow, transverse, sunken eyes, the general proportions 

 of its rostrum and antennae (barring the extra funiculus- 

 joint), and the structure of its abdomen and tibiae accord 

 with Dryophthorus that one can scarcely resist the con- 

 viction that it is as much a member of the one subfamily 

 as of the other ; and my own opinion, consequently, is that 

 it is as nearly as possible osculant between the two. 

 Although agreeing very much better than Pentacoptus 

 and Chcerorrhinus do with the Dry ophthor ides > yet in con- 

 junction with those genera (in the latter of which the elytra 

 are cariniform on either side of the apex) it may be said 

 to constitute a most complete passage between the sub- 

 families in question, though of necessity claimed by the 

 Pentarihrides (with which, however, it has far less, primd 

 facie, in common) on account of the structure of its funi- 

 culus and feet. 



In the formation of its eyes Synommatus stands alone 

 amongst all the Cossonideous types with which I am 

 acquainted, the nearest approach to it being the genus 

 Stenommatus from Mexico; for not only are they very 

 much more approximated on the upper-side than is the 

 ease in any of the Dryophthorids which have hitherto 

 been brought to light, but (which is still more anomalous) 

 they are completely confluent beneath, the two to- 

 gether, consequently, well-nigh encircling the entire head ! 



