BY THE REV. T. BLACKBURN. 783 



acute rectis ; elytris singulis strias 2 juxta suturam (1^ circum 

 apicem continuata et in disco antrorsum producta) Ique 

 marginalem (hac postice duplicata) pvofunde impressas 

 ferentibus, — striis (nisi apicem versus) crassissime punctu- 

 latis, — inter strias 2^*™ et marginalem stria 3"' subtili crasse 

 punctulata antice posticeque abbreviata et puncturarum ex 

 ordine obsoletioribus seriebus nonnullis instructis. 



[Long. 1^, lat. 5 line. 

 This species is evidently allied to T. semistriatus, Blackb., and 

 Flindersi, Blackb., (Trans. Roy. Soc. S.A. 1887, p. 41), which I 

 referred to Tachys (with extreme hesitation on account of 

 peculiarity of facies and sculpture) on the ground of their front 

 tibiae being shaped as in that genus, and their elytra having the 

 sutural stria recurved. Compared with T. Flindersi the present 

 insect has somewhat longer antennse and larger less prominent 

 eyes, the prothorax wider across the base than across the front 

 and with the sides less rounded so that the segment appears less 

 cordiform, and elytra much more coarsely punctulate-striate as 

 regards the sutural, the 2nd, and the marginal strise, but having the 

 other strise (except the recurved portion of the sutural and the 

 middle of the 3rd) quite obsolete and represented only by 

 rows of punctures which become successively finer as they approach 

 the margin till they are scarcely traceable ; it is moreover a much 

 larger species and much less parallel, the sides of the elytra 

 especially being much more rounded. The appearance of the 

 marginal stria of the elytra being duplicated behind seems to be 

 caused by its becoming wider and the widened portion being 

 intersected by a keel. There seem to be some setigei'ous punctui'es 

 on the 3rd interstice, but owing to the extremely coarse punctu- 

 ration of the adjoining stria I cannot identify them certainly 

 except by their setae some of which seem to have been rubbed oflf 

 in the example before me as they differ on the two elytra. My 

 specimen is a female ; it has two large setigerous punctures on 

 either side of the apical ventral segment a little behind the apex. 

 The apical joint of the maxillary palpi is scai'cely half as long as 

 the preceding joint. 



