OTIOKHYNCHUS. 225 



h» Elytra not, or scantily covered with scales, not punc- 

 tured with eye-spots. 



I, Antennae slender, second joint of funiculus much 

 longer than first. 



Oblong. Black ; antennae pitch-brown ; elytra with 

 scattered spots of grayish-yellow scales. Eostruni with 

 central furrow ; thorax at least as long as broad, rather 

 closely granulate, with a very feeble central furrow ; elytra 

 with deep furrows. L. 4| 1. Common. 0. sttlcatus, Fab. 



II. Antennae more or less thick, second joint of 

 funiculus not much longer than first. 



1. Length 4 — 5i lines. 



Black ; with gray scales. Eostrum with central ridge ; 

 thorax granulate ; elytra closely and finely granulate, with 

 punctured striae toward sides. Scarce. 0. ligustici, Lin. 



2, Length 2 — 3 lines. 



A A, Antennae thickened toward apex. 



a a. Eostrum longitudinally wrinkled ; second 

 joint of funiculus of antennae rather longer 

 than first. 



Oblong-ovate. Black, dull ; with scanty gray pubes- 

 cence. Forehead and rostrum longitudinally ^wTinkled ; 

 thorax broader than long, closely granulate, sides mode- 

 rately rounded ; elytra rather flat on disc, with moderately 

 strong punctuTed striae, interstices convex, granulate in 

 rows, with short white bristles. L. 2| 1. Eatlier common. 



0. rugifrons, Gyll. 



J) b, Eostrum with a longitudinal ridge and a 

 shallow furrow on each side ; second joint of 

 funiculus of antennae abnost shorter than 

 first. 



Ovate, Black, dull. Pubescence closer than in 0. mgi- 

 frons ; rostrum and forehead more punctured in wrinkles, 

 but with the punctures more evident. Thorax rather more 

 finely granulate ; elytra with rather finer punctured striae, 

 granulation of interstices not in distinct rows. L. 2\ — 2^ 1. 

 Eare. 0. amhigims, Schoenh. 



IB H, Antennae not thickened toward apex. 



ci a. Body black. 



VOL. II. Q 



