OF AMERICA NORTH OF MEXICO. 333 



Oregon. Wilcox. Resembles the next species, but is broader and the thorax is 

 very differently formed. 



30. S. SEx-MAcuLATA. — Minus elongata, nigra dense punctata pubescens, thorace convexo, campanulato, 

 lateribus ad medium subangulatis, antice valde obliquis non rotundatis, elytris flavis, lateribus subsinuatis, 

 apice subtruncatis, paulo dehiscentibus, margine basali, sutura fasciis 2 interruptis apiceque nigris ; 

 antennis tibiis tarsisque rufescentibus. Long. 'i. 



Leptura 6-maculata, Lin. : Kb. N. Z. 182 . 



The anterior fascia is composed on each side of 3 confluent spots. I have a variety 

 in which the second fascia is entire and much dilated in front. The antennae are 

 nearly as long as the body, with the fourth joint short. 



B. 



31. S. NiGRELLA. — LoDgiuscula nigra confertim punctata, nigro-pubescens, thorace pube nigra erecta 

 densius vestito, antrorsum angustato, utrinque constricto, linea dorsali tenui Isvi, elytris apice oblique 

 emarginatis, punctis postice subtilioribus. Long. '65. 



Leptura nigrella. Say. J. A. N. S. 5, 279. 

 Stenura nigrella, Hald. 63. 



Lake Superior to Georgia. 



32. S. PLEBEJA. — Longiuscula, nigra confertim punctata, thorace longiusculo, pube longa tenui flava densius 

 piloso, antrorsum parum angustato, linea tenui dorsali Isevi, elytris apice oblique emarginatis, testaceis 

 punctis postice subtilioribus. Long. •52. 



Leptura plebej a ! Rand. B. Jr. 2, 28. 



Maine and Lake Superior. Very similar to the preceding, but the thorax is 

 rather more elongate, and the hair v/ith which it is covered is yellow, and not 

 erect. 



Species mihi ignota, sectionis incertae. 



33. S. TENUiOR. — Nigra pube flava, elytris flavo 4-fasciatis, pedibus abdomineque testaceis. Long. 



5f lin. 

 Leptura tenuior, Kb. N. Z. 181. 



Canada. Resembles Leptura 4-fasciata of Europe. Probably belongs to A. — 3. 



TYPOCERUS. 



Caput pone oculos subito valde constrictum. 



Palpi vix dilatati, labiales non latiores. 



Antennae sub-12-articulatoe, articulis 6-11 compressis utrinque impresfis. 



Thorax angulis posticis productis. 



