NATURAL SCIENCES OP PHILADELPHIA. 213 



California, Oregon, and Arizona. This species represents the preceding in 

 the Pacific district, and only differs from it by the under surface, the legs and 

 the antenna being black. I have observed no transition between the two 

 forms, and since in this, as in other genera of Chrysomelidae, the distribution 

 of color is an important specific character, I am obliged to admit it as a dis- 

 tinct species. 



5. D. tenella Lee, Proc. Acad. Nat. Sc. Phil., 1850, 88. 



Fort Yuma, Colorado River, California. Colored like D. 12-punctata, 

 but the elytral spots are very small. 



6. D. balteata, elongata, pallida, nitida, thorace biimpresso, elytris sub- 

 tilius punctatis, fasciis tribus pallide viridibus ornatis, antica versus basin vitta 

 emittente ; occipite antennLsque rufo-fuscis, his articulis tribus baseos 

 pallidis ; postpectore, tibiis tarsisque fuscis. Long. *23. 



One specimen from the Rio Grande, Texas. A very beautiful and delicately- 

 tinted species ; the second transverse band of the elytra is a little behind the 

 middle, and is limited each side by oblique impressions. 



7. D. vittata Dej., Cat. 405. Crioceris via. Fabr., Ent.Syst. i. 2, 12; 

 El. i. 455; Galleruca via. Oliv., Ent. vi. 633; Enc. Meth. vi. 590; Harris 

 Ins. Iuj. Veg. 2d ed., 124 ; Shimer, Prairie Farmer, xvi. 109. 



Abundant in the Atlantic States ; quite destructive to cucumber vines 

 and other cultivated Cucurbitacese. The two thoracic impressions 

 become confluent at the middle ; the elytral strife are very deep ; the legs are 

 yellow, with the knees, the tips of the tibiae and the tarsi black. 



8. D. trivittata Mannh., Bull. Mosc, 1843,309. 



California. Closely resembles the preceding, but the impressions of the 

 thorax are smaller and not confluent ; the strife of the elytra are less 

 deep, and less strongly punctured ; the feet are black, Mth the base of the 

 thighs pale ; the antennae are entirely black. 



9. D. longicornis Galleruca long. Say, Journ. Acad. Nat. Sc. Phil., 

 iii. 460 ; ed. Lee. ii. 223. 



Illinois and Kansas ; differs from the next species by the elytra being 

 densely punctured, with traces of faint striae. 



10. D. atripennis Galleruca atr. Say, Journ. Acad. Nat. Sc. Phil., 

 iii. 4G1; ed. Lee. ii. 224. Prothorax and abdomen yellow. 



Var. a. Body black, prothorax yellow, with a broad dorsal black vitta. 

 Galleruca (Adimonia) cristata Harris, Hartford Tr. Nat. Hist. Soc. 90. 



Var. b. Body entirely black. D.? fossata Lee, Pr. Ac. Nat. Sc. Phil., 

 1858, 88. 



The type occurs in Kansas ; var. a. throughout the Atlantic States, and 

 var. b. in Texas, Illinois, and at Lake Superior. After careful examination, I 

 can find no differences but those of color. 



GALERUCA Geoffr. 



This genus, by an error of spelling, is usually known as Galleru- 

 c a, and is restricted to species which are punctured, and more or less pitbes- 

 cent above. The front is not carinated between the antennae ; the maxillary 

 palpi are rather stout, with the last joint conical ; the third joint of the an- 

 tennae is equal to the fourtli and longer than the second. The epipleura; ex- 

 tend to the tip of the elytra, except in G. x a n t h o m e 1 ae n a, where the low- 

 er margin becomes obsolete behind, without uniting with the upper margin, and 

 inG. infuscata and m o r o s a, where the upper margin is obtuse, and be- 

 comes obsolete near the tip. The front coxae are contiguous, conical and pro- 

 minent ; the tibiae are not sulcate, the claws are acutely toothed, or may be 

 regarded as cleft, with the lower part much shorter than the upper. 



1*65.] 



