62 U. S. p. R. R. EXP. AND SURVEYS — ZOOLOGY — 47TH PARALLEL. 



flavis ; abdomine flavo, nigro annulate ; femorum tasi tibiis tarsis antennisq[ue ferrugineis, 

 femoribus posticis modice elongatis. Long. "65. 



One sijecimen, San Francisco, Mr. Child. Similar to C. capraea, but, besides sligbt differences 

 in the form of the basal yellow ring-like mark, the two posterior fasciae are connected by a 

 yellow sutural line. 



Ulochaetes Lee. 



Caput deflexum, fronte quadrato perjiendiculari, jjone oculos subito at parum constrictum ; 

 oculi emarginati; antennae inter oculos pone medium insertae; palpi breves articulis turblnatis 

 subaequalibus ; antennae corporis dimidio aequales, articulis 3Io et 4to conjunctis 5to aequali- 

 bus. Thorax transversus lateribus et dorso acute tuberculatus, densissime pilosus. Elytra 

 abbreviata, scabra ad apicem subacute rotundata, humeris valde elevatis. Tarsi posteriores 

 articulo Imo sequentibus conjunctis aequali. Alae abdomine longiores rectae. 



- This genus contains but one very remarkable species allied to Necydalis. It diifers, however, 

 by its much less elongate form, by its less constricted neck, and also by the different propor- 

 tions of the joints of the antennae ; the elytra diverge posteriorly, showing a tendency to a 

 subulate form. 



U. leoninus, niger, capite griseo-pubescente, thorace antrorsum angustato densissime longe 

 griseo-piloso, antice valde transversim impresso, postice paulo constricto, elytris opacis ad ajiicem 

 late testaceis ; tibiis testaceis ' apice nigris; antennis basi obscure testaceis, alis fuliginosis. 

 Long. -96. Tab. II, fig. 12. 



Lee. Proc. Acad. Nat. Sc. 7, 82. 



One specimen, found at Prairie Paso by Dr. Cooper. The scutel is smooth and shining, with 

 the sides hairy ; the pectus is thinly clothed with grayish hairs. 



AcMAEOPS Lee. 



A. coriacea, nigro-picea, crassa, parum nitida, thorace lateribus acute tuberculatis, elytris 

 postice obtusis, rugosis. Long. 'TS. Tab. II, fig. 13. 



Lee. Proc. Acad. Nat. Sc. 7, 219. 



Piodes coriacea Lee. Journ. Acad. Nat. Sc. 2d ser. 1, 318. 



Oregon. From its large size and stout form this insect resembles in appearance a small 

 Prionus, and was, therefore, placed by me as a separate genus ; on a careful reconsideration, I 

 could find no characters of importance by which to retain it as distinct from Acmaeops. 



A. fusca, pubescens, fusca, capite confertim punctate, canaliculate, thorace confirtim punctate, 

 latitudine vix breviore, antrorsum angustato et ibi lateribus rotundato, ad ajiicem vix constricto 

 fortius marginato, linea dorsali postica laevi ; elytris sat dense versus basin paulo fortius ad 

 apicem subtilius punctatis, parallelis postice obtusis. Long. -h. 



Sacramento, Mr. Wittick,. Allied to A. californicus Lee, but is larger and stouter, with 

 the thorax less rounded on the sides, which are parallel behind the middle ; the thorax is also 

 more strongly margined and less constricted at the apex ; the punctures of the elytra towards 

 the base are smaller and more dense than in that species, and the humeri are less prominent. 



A. lugens, atra pubescens, capite confertim punctate canaliculate, thorace cenfertim punctate, 

 linea dorsali postica laevi, latitudine breviore, lateribus antice valde rotundatis, ad apicem 



