1853.] 339 
tenn are a little more slender, but as there is a slight difference in the antenne 
depending on sex, this is not an obvious character; they are scarcely longer than 
the head and thorax, and the outer joints are closely connected. ‘The spurs of 
the posterior tibiz are equal and slender. 
29. L. oblita, nigra, minus dense nigro-pilosa, capite thoraceque parcius 
grossius punctatis, hoe longiusculo, antice angustate, subcanaliculato, elytris 
seabro-punctatis. Long. -36—-4. 
Tpicauta oblita Le Conte, Ann. Lyc. 5, 162. 
San Francisco and Oregon. The outer joints of the antenne are closely united; 
the posterior spurs as inthe preceding. 
30. L. maura, nigra vix nigro-p!losa, capite minus dense punctato, thorace 
subquadrato, longiusculo, parcius punctato, subcanaliculato, elytris scabro-punc- 
tatis, antennis elougatis, laxe articulatis. Long. °4. 
picauta maura Le Conte, Ann. Lye. 5, 162. 
San Francisco, California. Easily distinguished from the two preceding by 
the longer and more slender antenna, and the more quadrate and much less 
punctured thorax. The spurs of the posterior tibie are slender and acute. 
B—g. 
31. L. pensylvanica, atra, immaculata, confertissime subtiliter punc- 
tata, brevissime pubescens, thorace quadrato, angulis anticis rotundatis, labro 
leviter emarginato. Long. -4—-5. 
Cantharis pensylvanica De Geer, Mem. Ins. 5, 13, pl. 13, fig. 1, (1775.) 
Lytta atrata Fabr. Ent. Syst. (1775) 250; Ent. Syst. emend. 2, 86, (1792.) 
SystesEl). O79: 
Cantharis atrata Olivier, Ins. 46, 17, tab. 2, fig. 19, (1795): Harris, Ins. In- 
jurious to Vegetation, 123. 
Meloe atra Pallas, Icon. Insect. Ross. p. 99. 
Lytta coracina Wliger, Mag. 3, 171. (1804.) 
Meloe nigra Woodhouse, Medical Repository. 3, 213. 
Abundant throughout the Atlantic States and Missouri Territory. The antenne 
are slender; the outer spur of the posterior tibie is a little wider than the inner 
one, and slightly obtuse. 
32. L. convolvul i, atra, eonfertissime punctata, breviter pubescens, 
eapite postice obscure sanguineo, thorace longiusculo, elytrorum margine ex- 
terno cinerascente. Long. -26. 
Cantharis atrata (var. eonvolvuli) Mels. Proc. Ac. Nat. Se. 3, 58. 
Pennsylvania: Dr. Melsheimer. This species resembles closely the preceding, 
but differs in the gray pubescence and in the form of the thorax, which is here 
longer than wide: the antennez are less slender; the spurs of the posterior tibixw 
appear to be more slender. The head in my specimen is dull black, very ob- 
scurely sanguineous at the base and on the vertex. 
33. L. fissilabris, atra, subtiliter nigro-pubescens, subtiliter punctata, 
thorace quadrato, canaliculato, angulis anticis rotundatis, labro profunde emar- 
ginato. Long. :68. 
Epicauta fisstlabris Le Conte, Agassiz’ Lake Superior, 232. 
One specimen: Kakabeka Falls, Lake Superior. This species differs from 
C. pensylvanica in being larger and more finely punctured; the antenne are at- 
tenuated towards the apex, and the spurs of the posterior tibia are slender, equal 
and slightly obtuse. In the form of the body, which is more robust than C. pen- 
syivanica, as well as in the deep emargination of the labrum, it resembles the 
next species. 
31. L. cinerea, atra, dense cinereo-pubescens, capite postice dilatato, ver> 
tice nigro, thorace angustiore subeampanulato, nigro, lateribus vittaque cinereis; 
elytris vix rugosis, subtiliter cinereo-pubescentibus, margine suturaque cinereis, 
labro modice emarginato. J.ong. -4—-°7. 
o2 
