Rhynchophorous Coleoptera of Japan. 91 



Teachyrhinus, geu. nov. 



Corpus rugosum, sordidum, sat elongatum, setis erectis parce 

 vestitum. Scrobfe laterales, latse. AntenuEe scapo sat elongate 

 setoso, apicem versus crassse. 



Distinguished from Tro.chyphloeosoma by the more elongate 

 rostrum, with longer scrobes. and by the comparatively elongate 

 form of the body. The mandibular scars are distinct, the scrobes 

 are very broad, owing to the arching of their upper margin, which 

 causes them to encroach a little on the upper face of the rostrum, 

 but the general direction and position of the scrobes is that of the 

 Brachyderides, rather than that of the Otiorhynchides : there are 

 no ocular lobes or vibrisste, the eyes are rather small, nearly cir- 

 cular not prominent. The nasal plate is extruded so as to form an 

 abrupt prominence. Femora not dentate : claws small, not 

 connate. Metasternum very short : second and third abdominal 

 sutures extremely deep ; second segment equal in length to the 

 part of the first segment that lies behind the coxas. Tarsi rather 

 small : tips of hind tibiaj slender, minutely mucronate. 



This insect has somewhat the facies of Trachyphloeus. 

 It may be described as a connecting link between 

 Amystax and T r achy phhco soma. It differs from the 

 former by the scrobes which are broader, attain the eye, 

 and are somewhat visible from above. The abrupt 

 prominence of the nasal plate is peculiar. 



1. TrachyrJdnus sordidus, n. sp. 



Piceus, suboblongus, rugose sculpturatus, setosus, parcius 

 obscureque squamosus ; prothorace sat elongato, medio canali- 

 culato. Long, 5, lat. 1| mm. 



Antennce obscure red, scape rather long, with very distinct erect 

 set« on the lower margin, 2nd joint rather long, 3rd a little shorter, 

 4-8 differing but little in length, the 8th slightly broader than the 

 preceding, about as long as broad ; club oval, moderately long 

 and stout. Nasal plate small but peculiarly prominent, placed 

 entirely in front of the antennal insertions : front of rostrum 

 rather broad, rugose ; eyes entirely lateral, rather distant from the 

 thorax. Thorax nearly as long as broad, slightly narrower than the 

 elytra, curved at the sides and a little narrowed behind, coarsely 

 and very deeply rugose. Elytra rather narrow, very little narrowed 

 in front, very coarsely sculptured, but covered with an exudation 

 mixed with dirt, which obscures also the small scales ; the erect 

 setaj very distinct, slightly clavate. In the male there is a deep 



