1879.] dJO [Horn. 



arcuate, anterior angles short, obtuse, limited within by a deep impression 

 and behind by a finely impressed line, hind angles moderately retracted, 

 somewhat triangular, smooth, separated from the disc by a moderately 

 deep impression, disc slightly convex, sparsely irregularly punctured with 

 smooth spaces and a broad impression at the middle of the sides. Elytra 

 flattened on the disc, surface very coarsely, deeply and densely punctured. 

 Pygidium shining, coarsely and closely punctured. Body beneath coarsely 

 but not densely punctured, abdomen nearly smooth at middle. Legs very 

 closely resembling nitens. Length. 40 inch ; 10 mm. PI. iv, fig. 9. 



This species is easily known from the others of this group 

 by its comparatively shining surface and the sculpture of 

 the thorax. The impression of the disc near the sides is 

 variable in extent, being in some specimens quite feeble. 



Occurs in Canada, Middle States and Illinois. 



Notes on the Species described or quoted by Prof. Westioood in his 

 " Thesaurus Entomologicus Oxoniensis." 



The work of Prof. "Westvvood, so repeatedly quoted in the preceding 

 pages, seems to require a little more notice than has been given it, from the 

 fact that its distribution in European Libraries will have considerable 

 weight in the determination of our species ; and as the species are (with 

 one exception) peculiar to our fauna, it seems proper that they should be 

 reviewed in the light of more material than Prof. Westwood possessed. 



In this work there are described as new, seven species, Lecontei, Wahliii, 

 cicatricosus, junior, Percheroni, crenicollis and crassipes, the type of the 

 latter being in the cabinet of Maj. Parry in London, Percheroni in the 

 Univ. Halle, and the others in the Berlin Museum. 



With the first six we have more especial need to deal. Lecontei and 

 Walshii are described from specimens in the Berlin Museum, from very 

 short notes made in 1869, before my synoptic table appeared giving suc- 

 cinctly the differential characters of the species. The next four species 

 "are introduced in this work mainly on the authority of Dr. Schaum, who 

 possessed specimens of them, and who was in an excellent position to 

 judge of their specific rank, both from possessing the typical specimens of 

 Gory, and from his actual acquaintance with the American collections 

 made during a long visit to the United States." The authority from Prof. 

 W.'s own statement is derived from letters written in 1847, '48 and '49 ! 

 and had the science in America been dormant, those species might possibly 

 have remained twenty-five years undescribed. That they are all to be 

 added to our synonomy is to be regretted, while it is fortunate that so able 

 a describer lias made the task of their determination so easj-. 



As Prof. Westwood has given descriptions of all our species either by 

 quotation or from nature, with figures of many, I propose to pass them 

 briefly in review, giving the synonomy and notes on the figures. 



C. (Psilocnemis) leticostictus Burm. Westvv. Thesaurus p. 36, pi. ii, fig. 



