166 [Feb., 1847. 



Psvlliodes, Latr. 



P. punctulata. Brassy black ; thorax much and finely punctured; elytra 

 striate-punctate ; tibiae and tarsi pale brown. 1 1. long. Pennsylvania. 



Form of striolata, Illig. Brassy black ; head impunetured, rather opake ; 

 palpi dull testaceous; antennae slender, fuscous, the three basal joints tes- 

 taceous ; 10-jointed ; thorax slightly wider at base than at apex, with the 

 sides feebly rounded ; finely and rather densely punctured ; scutellum mi- 

 nute ; elytra narrowed behind and before, striate-punctate, the punctures 

 small ; beneath and femora, blackish-piceous ; tibiae and tarsi, dull pale 

 brown, the former dusky towards their tips ; posterior femora much in- 

 crassated ; posterior tarsi inserted before the apex of the tibiae. 



Aphthona, Chevr. 



A. rubicunda. Ferruginous ; eyes and suture of the elytra blackish. 1 

 1. long. Pennsylvania. 



Altica rubicunda, Melsh. Catal. 



Oblong, ferruginous ; head impunetured, glossy, darker than the thorax, 

 labrum piceous ; palpi black ; eyes blackish ; antennae color of the thorax, 

 four or five terminal joints dusky ; thorax narrower than the elytra, trans- 

 verse-quadrate, with the sides feebly rounded ; minutely and distantly 

 punctured ; each side of the middle with a small, obsolete, subbasal in- 

 dentation : scutellum piceous ; elytra rather convex with the sides arcua- 

 ted ; rugulose, minutely and distantly punctured, with the punctures rather 

 equidistant ; suture indeterminately blackish ; beneath and feet, color of 

 the elytra and thorax ; posterior tarsi . Perhaps referable to the ge- 

 nus Thy amis, Stephens. 



Thyamis, Steph. 



1. T. melanura. Fuscous; basal joints of the antennae and four anterior 

 feet, dull testaceous. \\ 1. long. Pennsylvania. 



Altica melanura, Melsh. Catal. 



Oblong-subovate, dull reddish-brown, glossy ; head impunetured, pitchy- 

 blackish, tinged with rufous ; palpi and eyes black, the first piceous ; an- 

 tennae fuscous, with the three first joints testaceous or dull rufous ; thorax 

 narrower than the elytra, transverse-subquadrate, the sides slightly round- 

 ed ; minutely rugose : scutellum piceous ; elytra finely and distantly punc- 

 tured and rugulose ; rather convex, with the sides hardly arcuated except 

 behind the middle ; beneath blackish or dark reddish-brown ; four ante- 

 rior feet testaceous ; posterior femora pitchy-brown, with their tarsi dull 

 testaceous, their tibiae sometimes of the same color ; first joint of the pos- 

 terior tarsi half the length of the tibiae. 



2. T. testacea. Testaceous ; beneath dull pale reddish-brown ; antenna? 

 long. 1. long. 



Ovate, above testaceous : head impunetured, shining ; eyes and ter- 

 minal joint of the palpi, black ; labrum piceous ; antennae long, slen- 

 der, testaceous, with the terminal joints dusky; second and third joints, 

 as in the preceding species, almost equal ; thorax narrower than the 

 elytra, subquadrate, with the sides slightly, and basal edge obtusely, 

 rounded ; very minutely punctured ; scutellum, color of the elytra, 

 which are rather paler than the thorax; rugulose, finely and distantly 

 punctured ; sides arcuated ; moderately convex ; beneath dull reddish- 



