166 Journal New York Entomological Society. [^'°1- xxx. 



presumably in Dr. Horn's handwriting, and since this seems to be 

 the only one of the original series of specimens bearing the exact 

 data given in the original description, possibly it might with propriety 

 be regarded as the holotype of the species in place of the one now 

 so designated in the Horn collection. Through the courtesy of Dr. 

 Banks the writer was permitted to mount the genital armature of this 

 specimen and found it exactly like the armature here figured. Thanks 

 are due to Dr. Skinner for the privilege of examining the specimens 

 in the Horn collection. 



Elongahda is not common in collections, in fact the only specimens 

 known to the writer are those above mentioned. With several thou- 

 sand specimens of Scrica at hand, representing many species, it be- 

 comes evident that Dr. Horn's statement concerning clongatula: 

 " Differs from all our species by its more elongate form, parallel 

 sides, more transversely convex thorax and elytra," has no descrip- 

 tive value, but to the contrary, may be responsible for many misdeter- 

 minations. 



Serica mixta Le Conte. 



Serica mixta Le Conte, Journ. Acad. Nat. Sci., Phila., Ser. 2, vol. iii, p. 

 276, 1856. 



(^. Length, 7.5 mm. ; width, 4.25 mm. Color brownish testaceous (argus 

 brown), surface somewhat opaque, dulled by a sericeous bloom, probably quite 

 distinct in fresh material. 



Clypeus level with the front, and unmodified, the anterior margin rather 

 strongly elevated, the lateral margins scarcely less so, and not separated 

 from the apical margin by an incisure, there being a scarcely discernible 

 waver in the rim at the juncture of its apical and lateral parts; viewed 

 perpendicularly the anterior, elevated margin only very slightly arcuate at the 

 middle, with the corners very broadly rounded, viewed at an angle from 

 above almost level ; surface of clypeus shining, covered with distinct, mod- 

 erate-sized punctures, separated by scarcely their own diameters. Clypeal 

 suture obtusely angled, or nearly arcuate, at the middle, fine and not very 

 conspicuous. Front opaque, a little less strongly, closely and evenly punc- 

 tured than the clypeus. Antennal club of usual size, about as long as the 

 combined length of the preceding antennal joints. Measurements of head: 

 diameter of head through eyes, 21; distance between inner eye margins, 13; 

 length of head on median line, 15; antennal club, 9; dorso-ventral diameter 

 of eye, 7. 



Pronotum not very convex, the punctures only moderately fine, rather 

 evenly placed and separated by about their own diameters ; posterior angles 

 obtuse but fairly distinct, lateral margins moderately arcuate ; near the 



