OF AMERICA NORTH OF MEXICO. 
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STRANGALIA, Serv. 
Caput pone oculos subito valde constrictum. 
Palpi parum dilatati, recte truncati, labiales non latiores. 
Antenna) 11-articulato, vel filiformes, vel vix serralse. 
Thorax angulis posticis productis. 
As thus defined, this group will contain many Pachyta of authors, and the greater 
part of Serville’s genus Grammopiera. That the labor of determining the species 
might be lessened, I have endeavored to arrange them according to their affinities 
into the following sections. 
A. Thoracis angulis posticis acutis. 
1. Corpus attenuatum, thorace apice tubulate, constrictoque, basL impresso. Sp. 1—3. 
2. Thorace postice impresso, angulis non deflexis, elytris triangularibus, apice emarginatis fronte 
triangulariter impressa. Sp. 4—7. 
3. Corpus valde attenuatum, thorace baud impresso, angulis non deflexis, elytris dehiscentibus, apice 
excisis. Sp. 8—15. 
4. Corpus angustum lineare, elytris lineolatis, truncatis, grosse punctatis. Sp. 16—17. 
5. Elytris parallelis, concoloribus, grosse punctatis, thorace baud impresso : corpus minus angustatum. 
Sp. 18—24. 
6. Elytris dehiscentibus, grosse punctatis thorace postice profunde impresso. Sp. 25. 
7. Thorace convexo, elytris triangularibus, maculatis, fronte ad apicem baud impressa. Sp. 26—30. 
B. Thoracis angulis posticis laminatim productis. Sp. 31—32. 
A.—1. 
1. S. scALARis.—Valde elongata, picea, dense subtiliter rugose-punctata, pubescens, thorace longiusculo, 
antrorsum angustato, utrinque constricto, canaliculate, lateribus subsinuatis, elytris medio coarctatis, 
apice dehiscentibus, rotundatisque, macula coramuni subsellata, ad medium flavo-pubescente, palpis 
antennisque rufis. Long. '95. 
Leptura scalaris, Say. J. A. N. S. 5, 278. 
Found at Saratoga, and given to me by Mr. James Thomson. 
2. S. COARCTATA—Valde elongata, picea, dense subtiliter rugose-punctata, pubescens, thorace campanulato, 
utrinque subconstricto, elytris medio coarctatis, basi rufescentibus, apice dehiscentibus, rotundatisque, 
abdomine rufescente. Long. 8 lin. lat. 2. 
Toxotus coarctaius, Hald. 59 : Dej. Cat. 
Pennsylvania. Mus. Mels. Very similar to the preceding, but the thorax is bell¬ 
shaped and rounded on the sides. 
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