of some species of Cltrysomcla, ^'c. 177 



The apical joint of the maxillary palpus is equal in 

 ■width, or nearly so, to that of the penultimate. It differs 

 in this respect from bifrons and nivalis, in both which 

 insects it is broader than the penultimate. The same 

 character separates it from (jloriosa, in which species the 

 terminal joint is narrower than the preceding one. In 

 the ^ sex of speciosa and gloriosa, the basal joint of the 

 two anterior pairs of tarsi agrees in length and dilatation ; 

 in both it is longer than in nivalis. The trilobate apex 

 of the anal segment of the abdomen in the $ is very 

 similar to that of sulcata, but the great difference in 

 general form in the two species Avill prevent them from 

 being confounded Avitli each other, even when the longi- 

 tudinal grooves on the elytra in the latter insect are 

 wanting. The form of the apex of the segment in 

 the S approaches very closely to that of the gloriosa, but 

 in the pi'esent insect the extreme apex or space between 

 the sinuosities is very slightly produced and very obtuse. 



Chrysomela nivalis, Suffr. 

 Lin. Ent. p. 16, var. y — 8 ; ignita Kuster. Kaf. 13, n. 90? 



Elongata, fere parallela $ ; minus elongata, postice 

 ampliata ? , rufo-cuprea, subtus seneo tincta ; thorace 

 subcrebre punctato, lateribus intra marginem profundius 

 punctatis, basi excavatis, apice leviter depressis ; elytris 

 thorace latioi'ibus, parallelis ^, postice ampliatis $, con- 

 vexis ; subopacis, minus fortiter pvmctatis, punctis acicu- 

 lacis, interspatiis granulosis, leviter rugulosis. 



Mas. — Palporum maxillarium articulo ultimo quam 

 penultimo latiori, apice late truncato. Tarsorum omnium 

 articulo basali dilatato, breviter semi-ovato, illo tarsi 

 postici paullo longiori ; abdominis segmento ultimo a])ice 

 concavo-emarginato, fundo breviter lobato ; telo modice 

 elongato, curvato, apice semi-ovali. 



Fcem. — Abdominis segmento ultimo obtuse rotundato, 

 utrinque obsolete sinuato. 



Long. 4 — 5 lin. 



Ilab. — Swiss Alps; Pyrenees. 



Thorax nearly twice as broad as long ; sides parallel at 

 the base, rounded and converging from the middle to the 

 apex ; disk more closely punctured than in Ch. speciosa, 

 the sides excavated in a similar manner, but more sparingly 

 impressed with coarse punctm-es than in that s])ccies, the 

 puncturing being finer and loss separable from that of the 



N 2 



