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-MACOLATA.—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 tibils tarsisque rufescentibus. Long. '4. 
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 antennse are 
nearly as long as the body, with the fourth joint short. 
B. 
31. S. NiGRELLA. —Longiuscula nigra confertlm punctata, nigro-pubescens, thorace pube nigra erecta 
denslus vestito, antrorsum angustato, utrinque constricto, linea dorsali tenui l$vi, elytris apice oblique 
emarginatis, punctis postice subtllloribus. 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 dorsal! laevi, elytris apice oblique emarginatis, testaceis 
punctis postice subtilioribus. Long. *52, 
Leptura plebeja ! Rand. B. Jr. 2, 28. 
Maine and Lake Superior. Very similar to the preceding, but the thorax is 
rather more elongate, and the hair with 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. 
5J 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. 
Antennce sub-12-articulatce, articulis 6-11 compressis utrinque impressis. 
Thorax angulis posticis productis. 
