NATURAL SCIENCES OF PHILADELPHIA. 355 



82. Leptura cribripennis Lee. Two specimens collected by Dr. W. A. 

 Hammond in the Black Hills, have precisely the form and sculpture of this 

 species, hut the elytra are black, with the base red ; another from Oregon has 

 the elytra entirely black. Finding no differences but those of color, I not 

 only believe these to be merely varieties, but also suppose that L. cana- 

 densis Fabr. and L. erythroptera Kirby (nee Genu.) are corresponding 

 varieties of another species ; the entirely black variety of our Eastern species 

 is as yet unknown. 



83. Leptura c u b i t a 1 i s, elongata, nigra, parce subtiliter cinereo-pubescens, 

 capite thoraceque confertim punctatis, hoc couvexo, subcanaliculato, lateribus 

 valde rotundato, antice angustato, fortiter constricto, basi modice constricto, 

 linea dorsali lsevi nitida, elytris parallelis apice subtruncatis, sat dense postice 

 subtilius punctatis, antennis tenuibus piceis, basi rufis, pedibus anticis rufis, 

 femoribus apice, tibiis apice externo, tarsisque nigris. Long. "35. 



San Mateo, California, A. Agassiz. Belongs to the same division as L. 

 sphaericollis Say, L. vibex Newman (nitidicollis Horn, Pr. Ac. I860, 

 570) and L. a u r a t a Horn.* 



84. Leptura fasciventris, nigra, fulvo-pubescens, capite thoraceque 

 confertissime punctatis, opacis, hoc convexo subcanaliculato campanulato, 

 apice valde, postice modice constricto, lateribus sinuatis, elytris flavis (9) 

 subparallelis, thorace fere duplo latioribus apice subtruncatis, dorso antice 

 subdepressis, modice postice subtilius punctatis, flavis fasciis duabus trien- 

 teque postico nigris, maculaque rotundata utrinque ante apicem flava ornatis ; 

 abdomine flavo, plus minusve nigro-fasciato, pedibus rufo-flavis, femoribus 

 crassiusculis ; antennis nigro-fuscis, plus minusve testaceo-annulatis, vel testa- 

 ceis, nigro-annulatis, basi nigris. Long. -40 -47. 



California, Mr. A. Murray ; found also in Oregon. Belongs to the same 

 group as L. c r a s s i p e s Lee, xanthog aster Lee, t i b i a 1 i S Lee. and 

 r u f u 1 a. The first band is oblique towards the suture, and is about \ from 

 the base ; the second is transverse, situated about the middle ; it is broad ex- 

 ternally, but scarcely reaches the suture ; the outer margin is black from the 

 2d band, and the suture from the first band. The abdomen is yellow, the base 

 of each segment, especially at the sides, is black, but in one specimen this is 

 observed only on the first and second segments. 



85. Leptura dolorosa, robusta, nigra opaca, subtiliter cinereo-pubescens, 

 capite confertim punctato canaliculato, thorace antrorsum sensim angustato, 

 lateribus late rotundatis, basi incurvis, apice valde constricto, basi profunde 

 transversim impresso et depresso, disco parum convexo, profunde canaliculato, 

 parce basi dense punctato, elytris planiusculis, apice oblique intus truncatis, 

 sub}:>arallelis, sat dense postice subtilius punctatis. Long. -58. 



East of Fort Colville, Mr. Gibbs. Related more nearly to L. b i f o r i s than 

 to any other known to me, though, from its black color, very different in 

 appearance The disc of the thorax is broadly flattened each side behind the 

 middle. 



86. Leptura (Stenura) carbonata, elongata, nigra st;bnitida, subtiliter 

 nigro-pubescens, capite canaliculato, sat dense fortiter punctato, thorace 

 parum convexo, antrorsum sensim angustato, apice constricto, basi fortiter 

 impresso et depresso, linea dorsali angusta lsevi, dorso parce, lateribus sat 



* To the same division belongs ihe following species from Lake Superior: 

 L. pe U a 1 i s, elongata, nigra, parce fusco-pubescens. capite thoraceque dense punctatis, 

 hoc convexo, subcanaliculato, lateribus rotundatis, antice angustato apice valde constricto, 

 basi modice constricto, linea dorsali tenui laevi, elytris parallelis, apice subtruncatis, sat 

 deiise postice minus fortiter punctatis, antennis nigro-piceis, articulis 3 11 basi testaceis, 

 pedibus rufo-testaceis. Long. -40. 

 In one specimen the middle thighs are darker. 



1861.] 



