178 Mr. J. S. Baly on tlie differential characters 



disk. Elytra broader tliaii the thorax, the sides parahcl 

 in the $ , dilated posteriorly in the ?, convex, subnitidous 

 or more rarely nitidous, finely but distinctly punctured, 

 the punctures aciculate ; interspaces granulose, finely and 

 irregularly wrinkled. Thorax more closely pimctured 

 than in any of the other species of the subsection ; the 

 elytra more finely punctiu-ed, their general surface being 

 at the same time less nitidous and more finely wrinkled. 



All the specimens I have seen of this insect (some 

 twenty in number) are extremely uniform in coloration ; 

 they are all a co]3pery-red, more or less tinged with 

 asneous beneath ; they belong to Suffrian's var. y and S. 

 I have never met with any of the other varieties given by 

 Suffrian, and cannot help suspecting that they belong to 

 some other species. 



The short basal joint of the four anterior tarsi, together 

 with the broader ajiical joint of the maxillary palpus, will 

 separate the ^ of nivalis from the same sex of gloriosa, 

 the only one with which it might be confounded ; the 

 ? may be at once known by the obtusely rounded and 

 obsoletely bisinuate apical segment of the abdomen. 



Chrysomela gloriosa, Fabr. 

 Ent. Syst. i. p. 324 ; Syst. El. i. p. 440 ; SuflTr. p. 165. 



Elongata, postice vix ampliata, convexa; thorace uti-in- 

 que intra marginem incrassatum profunde et irregulariter 

 foveolato-j)unctato, basi profunde, apice minus evidenter 

 excavato, disco subcrebre punctato, baseos medio vitta 

 brevi impresso (hoc vitta interdum obsoleta); elytris sat 

 fortiter punctatis, punctis aciculatis, interspatiis rugulosis. 



Mas. — Abdominis apice late concavo-emarginato, fundo 

 leviter bisinuato, medio breviter lobato, lobo obtuso ; tela 

 robusto, sat elongate, regulariter curvato, apice lingui- 

 formi. 



Fcem. — Abdominis apice utrinque concavo-emarginato, 

 apice ipso distincte producto, obtuse angulato. 



A. Viridi-metallica, thorace cyaneo tincto ; elytrorum 



linea suturali vittaque discoidali utrinque abbre- 

 viate cyaueis. 



B. Cyanea, elytrorum linea suturali vittaque discoidali 



nigro-cteruleis aut c;\}ruleis. 



C. Cjanea, elytrorum signaturis obsoletis. 

 Long. 4 — 5 lin. 



Ilab. — Swiss Alps. 



