286 PROCEEDINGS OP THE ACADEMY OP 



base and apex, a few small spots about the tip, and the transverse strife > 

 blackish or piceous ; labrum with a short black line ; rostrum tinged with 

 I'iceous at tip and near the base, antennae yellow at base, piceous at tip, situ- 

 ated upon a dusky spot, upper surface of the head black, a white abrupt line 

 at the vertex, two abrupt longitudinal ones upon the disk, an abrupt trans- 

 verse one on the middle of the posterior margin, almost connected with the 

 discal ones, and a few minute spots, whitish yellow, discal impression shallow ; 

 thorax nigro-piceous, or fuscous, with five maculose, irregular, yellowish 

 stripes, the exterior ones curved inward anteriorly, anterior margin yellow, 

 and behind and against it are many small yellow marks and dots ; pectus yel- 

 lowish white, with black spots, a large black spot upon the pleura, behind the 

 eyes ; hemelytra blackish fuscous, with numerous yellowish white short 

 streaks and flecks, especially upon the suture of the clavus, costal margin and 

 interior edge of the clavus yellowish-white, interior apical areole of the mem- 

 brane fuliginous, with a fuscous nervule ; wings dark fuliginous ; scutellum 

 black, with a short apical line, the exterior edge and two spots upon the disk, 

 yellowish-white ; abdomen black, with the incisures of the segments yellowish- 

 white ; legs yellowish white, with white spines to the posterior tibiae, base and 

 apex of the posterior femora, the apices of the tarsal joints minutely, and the 

 nails, fuscous. 



Length bh millims. Alar expanse 13 millims. 



Collected in the North-Western part of Washington Territory. 



It is much less robust than P. costalis, Fab., which it most resembles. 



Eectfication of the paper upon the HEMIPTERA of the North Pacifio Expedition. 



BY P. R. UHLER. 



My paper in the Proceedings for 1860 is very full of errors, owing to my not 

 having received the proof in time to correct it before its passage through the 

 press. There are many typographical and orthographical errors which the 

 reader can correct for himself; but the specific name was omitted from the 

 description under Orth^a, which must be Orth^ea maculifera, page 228. In 

 the introductory remarks, page 221, the expression: " genera Pentatoma and 

 Coreus of Fabricius," should read : genera Pentatoma of Latreille, and Coreus 

 of Fabricius. 



The genus Eucorysses not being distinct from Callldea, the species described 

 on page 221, must be referred to it, and as the specific name will thus be pre- 

 occupied, it may be called C. distinguenda. The species of Acanthosoma is 

 wrongly referred to hozmatogai terBurm., and is an undescribed species : It may 

 be called : 



Acanthosoma vicinum.- Olivaceous-yellow, coarsely punctured with black; 

 head densely, confluently punctured, central lobe as long as the lateral ones ; 

 rostrum pale luteous, piceous at tip, antennee pubescent, luridly luteous, the 

 last joint and the middle of the preceding one piceous, ocelli red ; thorax very 

 coarsely, confidently, deeply punctured, particularly in occasional impressions 

 of the surface, punctures rather sparse upon the disk, but much finer and ex- 

 tremely dense upon the humeri, humeral angles very prominent, subacute, 

 emarginated behind, black, bounded interiorly with reddish; lateral margins 

 of the thorax slightly sinuated, broadly impunctured. Scutellum sparsely, but 

 very coarsely punctured, the apex not margined with yellow : corium im- 

 punctured upon the disk, the remaining surface rather finely, and in spots 

 confluently, punctured ; membrane fuliginous, with some large white spots ; 

 wings tinged with fuliginous : tergum reddish-brown, the lateral margins 

 yellow, with three quadrate black spots, behind which are two black points : 

 pectus rather finely, confluently punctured with black: venter yellow, polished, 

 with a few scattered black punctures each side, the last segment and append- 



[Sept. 



