68 Dr. Sharp on the Rhynchophorous 



. Rkynchites tiisfis ? . 



Attelabus tristis, Fab., Ent. Syst , iv., p. 454. 



Mr, Lewis obtained a single mutilated male example 

 of an insect closely allied to the European Ehyncliites 

 tristis, but I think probably distinct therefrom. Faust 

 has described an allied species from East Siberia as 

 R. dejjressus, but I do not think our Japanese insect can 

 possibly be it. 



Miyanoshita. 



Aderorhinus, n. g. 



Coxae anteriores elongati. Prosternum post coxas minus breve, 

 epimeris a ligula triangulari separatis. Sutura prima ventrali 

 subobliterata. 



This genus has the prosternum formed in a rather different 

 manner to what is usual, the coxae being placed quite in front, 

 while behind the coxae the prosternum is longer than usual ; the 

 epimera are rather widely separated, and a ligula or tongue projects 

 backwards between them, but is connected with the epimera only 

 at the front part, so that there exists a deep narrow separation, or 

 apparent excision, on each side of the middle. The elytra leave 

 only a portion of the pygidium exposed. 



In other respects this insect is peculiar, the rostrum 

 being broad, short, and strongly curved ; the maxillae 

 very large, the submentum also very large, the mentum 

 itself very small : the first and second ventral segments 

 are anchylosed, and are large in comparison with the 

 following segments. There is only one species in the 

 genus, and I do not know any other of the Rliynchitidce 

 that much resembles it. It is allied to Engnamptns by 

 the slender club to the antennge, and by the ventral 

 segments, but differs strongly from it in appearance, and 

 by the peculiar structure of the apices of the prosternal 

 epimera, as well as by the somewhat shorter basal joint 

 of the hind foot. 



Aderorlmius crioceroides. 



Rhynchites cricoceroidcs, Eoelofs, Ann. Soc. Ent. Belg., 



xvii., p. 147. 

 This is apparently a rare insect, but occurs in Yezo, 

 as well as in the main island, on an evergreen-oak. 





