NATURAL SCIENCES OF PHILADELPHIA. 391 



LIMONIUS Esch. 



L. pectoralis, cylindricus, niger, vel nigro piceus, pube plurnbea sub- 

 tili vestitus ; capite punctato fronte paruin convexa, recte truncata ; thorace 

 latitudine paulo longiore, valde convexo, antice et postice paulo angustato, 

 lateribus late rotundatis, disco subtilius minus dense punctato, ante basin 

 breviter canaliculato, angulis posticis subtiliter carinatis testaceis, margine 

 apicali saepius testaceo ; elytris lirabo latoruf'o-^)iceo, striis profundis punctatis, 

 interstitiis planis confertim rugose-punctatis ; subttis piceus, punctatus, pro- 

 sterni lobo antico, protboracis angulis anticis et posticis laate testaceis ; pedi- 

 bus obscuris, vel piceo-rufis, antennis piceis, basi dilutioribus, articulo 3io 

 secundo paulo longiore, 4to vix breviore. Long. 7 mm. 



Fort Simpson, Hudson Bay Territory. This species is quite different from 

 any other in my collection, and seems, by description, to be related to the 

 European L. cylindricus. As in that speeies, the carina of the hind 

 angles of the thorax is very near the side margin, and the prosternum is 

 feebly channeled between the front coxae. Tbe prosternal sutures are deeply 

 excavated anteriorly, and the yellow color of the under surface of the front 

 angles extends along the prosternal sutures half way to the front coxae. 



L. infernus. Specimens of this species, labelled Elater nimbat us 

 Say, are contained in the collection of Dr. Melsheimer, now belonging to the 

 Museum of Comparative Zoology at Cambridge, Massachusetts. The descrip- 

 tion of Say does not represent the characters of the species in a recognizable 

 manner, but, as his specimen was obtained from the elder Melsheimer, there 

 can be no doubt of tbe authenticity of the specimens now in the collection. 



ATHOUS Esch. 



A. limbatus, nigro-piceus, subtiliter pubescens, capite fortiter punctato, 

 fronte valde excavata, margine reflexo testaceo, thorace latitudine longiore, 

 antice convexo postice subcanaliculato, lateribus paulo rotundatis, angulis 

 posticis carinatis limboque laterali angusto testaceis, confertim punctato ; 

 elytris striis punctatis, interstitiis fere planis parce punctatis, basi, limbo 

 externo angusto, epipleurisque luteis ; subtus rufo-piceus, pedibus, prosterni 

 vitta, lobo suturisque piceo-ferrugineis ; antennis obscurioribus, articulo 

 2ndo parvo, 3io triangulari elongato. Long. 8 '5 mm. 



A specimen from Northern California, given me by Mr. Ulke. The third 

 joint of the tarsi is very slightly prolonged beneath, and the fourth joint is 

 small. The carina of the hind angles of the thorax is very near the margin. 



A. mnntanus, niger nitidus, subtiliter cinereo-pubescens, capite fortiter 

 punctato, fronte excavata rubra ; thorace latitudine longiore, antice convexo, 

 dense fortiter punctato, punctis umbilicatis, basi margineque nigricante, 

 angulis posticis rectis, carina ad marginem contigua ; elytris striis profundis 

 punctatis, interstitiis convexis parce punctulatis (basi rufis ?) ; antennis rufo- 

 piceis, articulo 2ndo parvo, 3io elongato triangulari. Long. 12 5 mm. 



A badly preserved specimen from Montana Territory is in my collection. It 

 resembles in appearance A. equestris, but is smaller, and the elytra are 

 shining, and finely punctured, while in that species they are opaque, and 

 coarsely scabro-punctate. The base of the elytra is bright rufous, but the 

 marking is irregular, and may therefore be not constant ; the tarsi are want- 

 ing, but from the other specific characters I have no doubt that they are lobed 

 as in A. equestris. 



A. undulatis Kiesenwetter, Ins. Deutschl. iv. 320 ; Candcze, El. iii. 450 ; 

 El. undulatus De Geer ; El. trifasciatus Herbst, &c. 



Mr. Ulke has received, from Hudson Bay, specimens which agree with 

 the description of this species, thus far found only in Northern Europe and 

 Asia. I owe to his kindness the specimen in my collection. 



1866.] 



