220 PROCEEDINGS OP THE ACADEMY OF 



tip, though sometimes they are entirely separate. It is easily distinguished 

 from all the following, except T. 1 u teo c inc ta, by the extremely fine punc- 

 tation of the elytra. 



The sculpture and form of the thorax is subject to some variation ; there is 

 sometimes an impressed dorsal line, and the angles are occasionally quite pro- 

 minent. 



3. T. lu teoc incta. Galleruca luteocincta Lee, Proc. Acad. Nat. Sci 

 Phila., 1858, 88. 



Very abundant at San Diego, California, upon a species of A r t e m i s i a. I 

 have also received it from Santa Cruz, Cal. The elytra are generally green or 

 bronzed, with the sides and apex broadly margined with yellow ; individuals oc- 

 cur, however, in which the vittaj are well defined, and which can only be distin- 

 guished from T. c a n a d e n s i s by the thorax being more shining, with larger 

 scattered punctures, and by the color of the elytral vittae, which are always 

 dull black in the preceding, while they are greenish blue or bronzed in the 

 present species. 



4. T. fl avoli mbata. Galleruca flavolimbata Mannh., Bull. Mosc, 1843 308. 

 Northern and middle California. For a type I am indebted to the kindness 



of Col. Motschulsky. Differs from the preceding by the elytra being of a 

 beautiful' blue color and less finely punctured. I have seen no variation in 

 color, though specimens will probably occur having the blue disc of the elytra 

 divided into vittae. 



5. T. a 1 1 e n u a t a. Galleruca attenuala Say, Journ. Acad. Nat. Sci. iii 459 

 ed. Lee, ii. 223. 



Kansas. Larger than the next species, and with the elytra more finely punc- 

 tured, being'in this respect intermediate between T. flavolimbata and T. 

 canadensis. The discoidal vitta of the elytra is gradually widened behind 

 and becomes confluent with the sutural one about one-third from the apex, 

 (very much as in T. b a c c h a r i d i s) in the two specimens before me. 



6. T. co n ve rge n s, testacea, pallide pubescens, occipite parce punctato 

 nigro, thorace latitudine duplo breviore, angulis vix prominulis, disco parce 

 grosse punctato, utrinque oblique profunde imprcsso, linea dorsali brevi impressa, 

 maculis tribu3 magnis ornato, elytris fortius dense punctatis, vitta suturali al- 

 teraque discoidali latis cyaneis vel viridibus, hac pone medium sensim dila- 

 tata ; pectore abdomineque eaepissime fuscis, antennis nigris basi testaceo-ma- 

 culatis. Long. -24 -28. 



Kansas ; Nova Scotia, Mr. Ulke. A widely diffused species, easily recog- 

 nized by its small size and rather coarse punctures. 



The dorsal vitta of the elytra is dilated behind in most specimens, but does 

 not rendt-r the pale vitta shorter than in other species but merely attenuates 

 it behind the middle. In some of the specimens from Nova Scotia, the blue 

 vittaj are not united even at the tip, thus showing the same variation already 

 noted under T. canadensis. 



7. T.tomentosa. Chrysomela tomentosa Linn., Syst. Nat., ed. 12mo., i. 

 ii. 601. Galleruca baccharidis Weber., Obs. Ent., 57; Fabr., Syst. E!., i 480 

 Oliv. Eut., vi. G29, pi. 3, 34.. 



Occurs near the sea coast from New York to Florida. In all the specimens 

 before me, the discoidal black vitta of the elytra is dilated behind, and becomes 

 confluent with the sutural vitta about one-fourth or one-fifth from the apex. 

 It is easily distinguished by the very prominent thoracic angles causing the 

 sides to become quite sinuous. The description of Linnajus, which is quite 

 characteristic, seems to have been overlooked, except in the Melsheimer Cata- 

 logue. 



8. T. virgata, testacea, subtiliter pubescens, capite parce punctato, oc- 



[Oct. 



