26 lYCID^. 



very gradually becoming narrower and a trifle longer. Thorax 

 shining black, with the sides yellow. Elytra subparallel, the alter- 

 nate costae very slightly more elevated than the others ; the interstices 

 with a single line of rather strong punctures. 



Plateros alatus. 



(Plate VIII. fig. 4.) 



Eros alatus, Newman, JEntom. Mag., 1838, v. p. 382. 



Niger ; thoracis limbo flavo, elytris novemcostatis, interstitiis 

 uniseriatim punctatis, huraeris anguste rufo-flavis. $ 



Long. 3g lin. 



Hah. North America. 



Antennae relatively shorter than in the preceding ; the third joint 

 at its apex a little broader than its length, narrowed towards the 

 base ; the fourth joint nearly as long as the second and third taken 

 together, but not wider than the second, narrowed at the basal half ; 

 the following joints very gradually becoming narrower and a trifle 

 longer. Thorax not quite so short as ia Ikior, more rounded in 

 front, the posterior angles a little less diverging. Elytra rela- 

 tively a trifle less long, the shoulders margined with dark reddish 

 yellow. The coxiB and the extreme base of the femora yellowish. 



The species of this group are very variable, and it is difficult to 

 arrive at any definite conclusion as to the identity of the species 

 described by Newman with tliose of other authors. I think, how- 

 ever, that there is little doubt that alatus, N., is the female of lictor, N., 

 corresponding respectively to timklus, Le C, and ceger, LeC, which, 

 according to Dr. Le Coute himself, are synonymous with modestus of 

 Say (Bost. Journ., i. p. 153). See Le Conte, Journ. Ac. Phil. ser. 2, i. 

 p. 80, and List of the Coleopt. of N. Amer. p. 51. The reference in 

 Gemminger and v. Harold's ' Catalogue of Coleoptera,' p. 1634, 

 which assigns alatus to crenatus, Germ., is incorrect, as it is also 

 in the journal above quoted, at p. 79. 



Asiatic Species. 

 Plateros dispellens. 



(Plate VI. fig. 8.) 

 Lyons dispellens, Walker, Ann. §• Mag. N. Hid., 1858, ii. p. 282. 



Niger, nitidus, parce pubescens, parallelus, depressus ; thorace 

 nitido, Isevi ; elytris flavis, ajnce nigris, punctato-striatis, interstitiis 

 angustis costiformibus. d -, 2 • Long. 2^-3 1 lin. 



Hab. Ceylon {Dr. Templeton, Dr. Thwaites), South India {M. J. 

 Walhouse, Esq.). 



Eyes rather large. Thorax with the margins reflexed ; above 

 with an ill-defined ridge on each side extending from the side 

 (rather behind the middle) to the middle of the base. Elytra rather 



