224 
INSECTA SAUNDERSIANA. 
RhYNCHITES CONGENER, Jekel. 
Ovatus, nitidus, viridis, hinc inde subaureo micans, pilis tenuissimis 
reclinatis subtus apiceque elytrorum adspersus; rostro fronteque 
punciatis, illo inter antennas, hoc medio fovea impressis; capite 
obsolete canaliculate, antice leviter punctate, postice transversim 
strigosulo; thorace convexo, lateribus rotundato-ampliato, dorso 
concinne leviterque apice basique ruguloso-punctato, medio linea 
tenuissima cuprescenti; scutello truncato-conico, apice transversim 
angusteque elevate; elytris pone scutellum late impressis, punctato- 
striatis, interstitiis obsolete punctulatis; unguiculis tarsorum basi 
unidentatis; dente parallela. 
$ Rostro longiore, evidentius arcuate, apice minus ampliato; thorace 
lateribus magis rotundato-ampliatis, ante medium spina acuta 
armatis. 
$ Rostro parum arcuate, apice sat ampliato ; thorace inermi. 
Long, rostr. excl. 5^—6^; elytr. 3-^—4^. Lat. hum. 3—3^ mill. 
Patria : Shang-Hai, Chinae. Mus. Bowring, Saunders et Jekel. 
Very much allied to Rhynch. betuleti, F., and, like it, is variable in 
size, hut is generally smaller. The rostrum is less elongate and arcuate, 
with the forehead and head not so strongly punctate; the thorax is less 
convex, according to the sex, not really canaliculate; its punctures are 
much slighter; the scutellum has its posterior elevated part much more 
transverse, lineiform, not impressed; the elytra, more deeply and 
widely impressed, behind the scutellum, have their punctures much 
smaller, in substriatiform rows, with the interstices wider. The former 
of those characters approach it nearer to Rhynch. Populi , L., but 
the size is larger, and, from the minuteness of the punctures of the 
elytra and the more widened interstices, these organs are much 
smoother; the impression of the forehead is much shallower and 
shorter, &c. Can much less be mistaken with Rhynch. fulgulus, 
Falderm. ( Rhynch . Faldermanni, Sch.) and Rhynch. rugosus, Gebler. 
Species also belonging to this highly distinct group, in which the males 
have the thorax spinose on each side, and which, in a further and 
