ChrysomelidcB, in LinncBan and Banhsian Collections. 19 



3. Chr. graminis (Faun. Suec. 160, 509). One specimen only. 

 I took with me to the Linnsean Society specimens of the two green 

 Chrysomelcs known to us by the Stephensian names graminis and 



fulgida, and after a careful comparison I was quite convinced that 

 the Linnaean insect agreed with the latter species. When com- 

 pared with our Chr, graminis, Steph., it differed in having the 

 thorax broader and more convex, and less contracted in front, 

 than in that insect : it differed also in colouring. Whereas all the 

 specimens of C. graminis^ Steph., which I have been able recently 

 to examine, are of an uniform colour in the elytra, the Linnaean 

 insect presents three colours in the elytra. They are of a bright 

 golden green, with a narrow edging of blue at the suture; a 

 broadish band of a golden-copper hue at the outer margin, and a 

 blue patch within this, immediately behind the shoulder swelling. 

 \n fulgida, Stephens, this last-mentioned blue patch is often more 

 extended, and then assumes the form of a blue band within the 

 golden-copper band, but the condition presented by the Linnaean 

 specimen is very commonly found. Now upon referring to M. 

 Suffrian's descriptions I find that these same distinctions serve to 

 distinguish the Chr. graminis of that author from his Chr. Men- 

 thastri, but that his description of Chr. graminis agrees with the 

 Linnaean insect, and not with the Chr. graminis of Stephens's 

 Collection. In short, Chr, graminis, Linn. Coll. \?,= Chr, fulgida, 

 Steph., and = Chr. graminis, Suffrian ; whilst Chr, gramitiis of 

 Stephens's Collection is = Chr, Menthaslri of Suffi'ian. I may add 

 that the Chrysom. graminis of the Banksian Collection is the same 

 as that in the Linnaean. 



4. Chrys. cenea (Faun. Suec. 161, 510). This is decidedly not 

 the Lina (or Alelasoma) cenea of modern authors : it difi"ers in 

 having a relatively smaller thorax and more ample elytra. The 

 thorax has the sides distinctly incrassated, and an irregular longi- 

 tudinal depression at some little distance from, but parallel with, 

 the lateral margin. The elytra are finely and evenly punctured 

 throughout; the punctures show no tendency to form longitudinal 

 series as in the Chr, cenea of Fab. The only specimen of the Lin- 

 naean Collection is of an aeneous colour above, and aeneous black 

 beneath : the whole margin of the abdomen is rufous, the rufous 

 being most extended on the last segments. In fact, the Chr. cenea 

 of the Linnaean Collection is = Lina cuprea. 



5. Chrys. Aim (Faun. Suec. 161, 511) = Agelastica Alni. 



c 2 



