1240 COLEOPTERA 



nudo, Icito, opaco, nigvo, laitennis ierru^ineis; jjiotJiorace anticexeilde 

 angustato, iiiargine anteriore in medio hi-angulariter j)rominulo ; 

 elytris utrinque prope scutellum subnodosis, posteiius declivis 

 utrinque ante medium fascia albida, cuueiformi. 



Long., rostr. excl., 54mm.; lat., 3ram. 



The rostrum is scarcely so long as the thorax, is not curved, but 

 is broad, dull above, punctate, but not densely, some of the punctures 

 bearing a depressed seta. The antenncc are entirely ferruginous. The 

 thorax is as broad behind as the elytra ; from the base to the middle 

 it becomes slightly broader, and has sharply-defined sides, in front 

 of this it is excessively narrowed, the elevations over the head are 

 very distinct, and there are on the middle two transverse, rather ill- 

 defined, subangular elevations, the whole surface evenly clothed with 

 rather coarse griseous-brown scales, probably variable in colour. 

 Elytra clothed with scales, finer than those on the thorax, but rather 

 similar in colour, and not variegate, except by a large, pale, very 

 conspicuous, wedge-shaped mark on each, extending from each side 

 towards the suture, which, however, it does not reach ; on the basal 

 portion there are some coarse pits. The legs are densely squamose, 

 and the femora have a large angiilar prominence. 



This insect has more the facies of a Sympedius than a Tychanus ; 

 indeed, the limits of these Acalles genera are not at present very 

 definite. 



Mr. Helms has sent T. biifo, and informs me it is rare at Grey- 

 mouth. 



2183. T. dux, "--s- Opaque, black, antennae and tarsi piceous ; 

 dorsum nearly nude ; a large irregular spot near each hind thigh 

 formed by pallid scales ; yellowish ones form a line marking the 

 sides of the thoracic outline, similar ones appear, but sparingly and 

 irregularly, on other parts ; the rest of the squamosity black. 



Eostrum rather longer than thorax, a little arched, almost 

 parallel, not distinctly carinate, more distantly punctured in front 

 than elsewhere. Antenncc eloiigate, slender, inserted just behind 

 the middle ; scape flexuous ; basal two joints of funiculus very elon- 

 gate, second exceeding the first, joints 3 to 7 decrease in length ; 

 club ovate. Thorax narrower than elytra, its anterior half much 

 contracted (like that of T. ferrugatus) ; a linear median space smooth, 

 the rest of the surface punctate and squamose. Scutellum absent. 

 Elytra bisinuate at base, as far as hind thighs nearly quadrate, 

 behind much narrowed and callose ; the middle basal portion exhibits 

 liardly any sculpture except a few minute tubercles and obsolete 

 punctures ; tbe humeral region is explanate, and thus exceeds the 

 base of thorax in width ; on each elytron there are three squamose 

 elevations in an obliquely transverse row near the base, one behind 

 these ; the pallid spots are uneven, with an elongate elevation inside 

 and behind ; there is also a pair near the suture, situated a little 

 further forward than the last-mentioned. Legs with erect, coarse, 

 variegate setae ; tarsi stout, third joint broadly lobate ; tooth of the 

 femora only moderately developed. 



