MONOGRAPHIE DES CHRYSOMÉLIDES DE L'AMÉRIQUE. 321 
19. CHRYSOMELA VIDUA ROGERS. 
Oblong oval, black, sligthly bronzed; thorax with the margin thicke- 
ned, with coarse punetures; elytra black, slightly bronze, with the punetures 
in somewhat regular rows; antennze, legs and under surface black. Length. 26. 
Chrysomela vidua Rogers. Proc. Acad. Philad. VIII. p. 36. 26. 
(1857.) 
^" y Suffr. Ent. Zeit. XIX. p. 387. 26. (1858.) 
Locality: Oregon. (sec. Rogers. l. c.) 
20. CHRYSOMELA FLAVO-MARGINATA Say. 
Black; thoracic margin thickened; elytra margined with yellowish. 
Chrysomela flavomarginata Say. Journ. Acad. Philad. II. p. 
- 452. 7. (1824.) 
‘3 bs Say. Compl. writ. ed. Le Conte II. 
p. 218. 7. (1859.) 
hs , Rogers. Proc. Acad. Philad. VIII. p. 36. 
21. (1851.) 
p " Suffr. Wnt Zeit. XIX. p. 387. 27. 
(1858.) 
Inhabits Missouri. 
Body black, punetured: thorax, punctures each side larger; lateral margin 
thiekened: elytra with regular series of puuctures, and smaller irregularly disposed 
punetures: exterior margin and tip yellowish; beneath black. 
Length more than one-fourth of an inch. (sec. Say. l. e.» 
21. CHRYSOMELA SUBSULCATA MANN. 
Sub-hemisphærica, valde gibbosa, viridi-ænea, nitida; thorace trans- 
verso, apice parum emarginato, basi bisinuato, lateribus modice rotundato, 
antrorsum parum angustiore, subtiliter remote punctulato, margine late in- 
crassato, sulco apicem usque profunde exarato utrimque limitato; elytris sul- 
catis, in sulcis punctis subtilibus remotis striatis, interstitiis valde elevatis, 
costatis, antice inæqualibus. Longit. 531—931 lin, Latid. 21— 27 lin. 
var. 6. — Supra nigra, elytrorum margine viridi-æneo, corpore sub- 
tus obscure cyanescente. 
Chrysomela sulsulcata Mann. Bull. de Mose. XXVI. II. p. 254. 
241. (1853.) 
Specimina in insula St. Pauli a D. Wosnesensky capta e Museo Acad. Imp. Scient. 
Petrop. ad deseribendum benevole transmisit D. Ménétriés. (sec. Mannerheim I. e.) 
