1854.] VJ 



ad medium apiceque late nigris, ilia oblique intus emarginata, pedibus testaceis 

 femoribus tibiisque posticis ad apicem genubus tarsisque nigris, antennis pallido 

 annulatis. Long. -7. 



Two specimens, one having the third joint of the antennae black, the other, 

 having it pale at the base, like the following joints : Fort Vancouver and Prairie 

 Paso. This species resembles very closely S. obliterata, but the thorax is 

 shorter and more dilated posteriorly; the impressions are much stronger, and the 

 disc is separated from the base by a sudden declivity ; the basal margin is also 

 yellow, and there is no trace of the two elytral spots before the middle ; the 

 apex of the elytra is not at all rufous. 



In the description of S. obliterata (Journ. Acad. Nat. Sc. 2d ser. 1, 328) the 

 testaceous sides of the thorax and the annulate antennas are not mentioned ; 

 they were overlooked on account of the dark color of the specimen from which 

 the description was made. 



Plectrura product a, nigro-picea, parce griseo pubescens, guttulis flavo-pu- 

 bescentibus parce adspersa, confertim rugose punctata, thorace callo dorsali 

 parvo, elytris callis subquinque-seriatis nitidis parce ornatis, apice non crenula- 

 tis, singulatim longe acuminatis, antennis annulatis. Long. 5. 



One specimen, Fort Vancouver. This species does not agree with the des- 

 cription of P. sprnicauda Mann. (Bull. Mosc. 1852, 366). The thorax has a 

 strong: lateral spine, with some smaller ones around it, as required in the generic 

 description, but the tips of the elytra are not crenulate; the smooth tubercles 

 form five series, of which only the outer one is entire; the others are imperfect, 

 containing only three or four tubercles each ; the sutural one is indistinct, the 

 second ends just behind the middle ; the third and fourth are abbreviated at each 

 end, commencing about one-third from the base, and ending at one-fifth from the 

 apex ; the scutellum and a little thoracic line anterior to it are more densely 

 pubescent, with yellow hair, than any other portions. 



Tetraopes oregonensis, niger, capite thorace elytrisque coccineis (pallide 

 pubescens ?) thorace nigro-4-punctato, disco medio subito elevato, antice pos- 

 ticeque valde constricto, lateribus subito valde dilatatis, parcius punctate 

 elytris parce punctatis puncto humerali, duobus ante medium, altero utrinque 

 pone medium, scutelloque nigris, pedibus antennarumque articulo lmo coccineis. 

 tarsis, genubus, tibiisque posticis nigris. Long. -55. 



Wenass River to Fort Colville. This species has the form of T.femora- 

 t us Lee, but the thorax is still more dilated on the sides. From T. basalis 

 (the only other species known to me in which the base of the antennae is red) 

 it is easily known by the sudden elevation of the disc of the thorax. The 

 pubescence has been removed by the alcohol, and I am therefore uncertain 

 whecher the antennae are annulated. The black spots of the elytra are in the 

 usual position, but are very small, and, with the exception of the humeral one, 

 disappear entirely in many specimens. 



Coccinella subversa, hemispherica nigra, capite ante oculos albo (ore, cly- 

 peoque feminae nigris) thorace subtiliter punctulato, lateribus rotundatis, macula 

 antica ad angulos quadrata, apiceque albis, elytris distincte at subtiliter punctu- 

 latis scutello nigro, et praecipue macula obliqua ad medium nigra notatis. 

 Long. '2. 



This species resembles closely C. c a lifo r n i c a, but is smaller, and the 

 elytra are much more distinctly punctulate. 



Hippodamia mo est a, rufescente-nigra, nitida, dense subtiliter pur,ctulata, 

 macula frontali rhomboidea, thoracis margine laterali antice posticeque latiore, 

 linea media ante medium, guttisque dorsalibus duabus albis, elytris thorace lati- 

 oribus macula laterali triangulari ad quadratem posticum alba ornatis. Long. 3. 



Prairie Paso. The ungues are acutely toothed, as in most species of the genus ; 

 the white triangular spot of the elytra is between one-fourth and one-fifth from 

 the apex, and is somewhat dilated along the margin in one specimen. 



Necrophorus p o 1 1 i n c t o r, niger, thorace ovali, transverso, marginibus late 

 depressis, disco tenuiter canaliculato, fortius transversim impresso, elytris par- 



