338 Mr. J. Walton on the genus Apion. 



mens ; this I have many times examined, and always with the 

 same result, which is, that it is an immatm'e male of Ap. apricans 

 of Herbst, synonymous with Ap. flavifemoratum of Kirby : the 

 latter author therefore appears to have described the same spe- 

 cies twice ; but I think the circumstance of Linnseus having given 

 the habitat in " Fagifoliis " has had a tendency to bias Mr. Kir- 

 by^s judgement, in considering it distinct from his Ap. flavifemo- 

 ratum : this (with many other species of the genus that I have 

 examined) has ample wings, and the imago is not always found 

 on the same plant that the larva feeds upon, but sometimes on 

 trees — see notes on Ap. Craccce ; it is therefore very probable that 

 Ap. Fagi of Linnseus was found on a beech-tree. 



This and the preceding species, from their extreme resemblance 

 to each other, are rather difficult to determine, but a knowledge 

 of their sexual dissimilarities in the form of the rostrum will 

 greatly assist in distinguishing them. 



Ap. assimile may be known from Ap. Fagi by having the ros- 

 trum in both sexes distinctly more curved, and in the male at- 

 tenuated in front ; whereas the latter species has the rostrum of 

 both sexes filiform, nearly straight, and evidently longest in the 

 female. Ap. assimile has the basal joints of the antennse dull 

 piceous ; the thorax closely punctulated, with the punctures con- 

 fluent. Ap. Fagi has the basal joints of the antennse testaceous ; 

 the thorax above more convex, with shallow subremote punctures 

 on the disc ; and it is a larger insect than Ap. assimile. 



I have foreign specimens of Ap. flavifemoratum of Herbst from 

 Germar, found in Saxony, which is a very distinct species and not 

 hitherto discovered in this country. I have also foreign examples 

 of Ap. apricans of Herbst from Schonherr. 



I have frequently taken, in the spring and autumn, this and the 

 preceding species together in profusion in red clover fields [Tri- 

 folium pratense) near Mickleham, at Birch Wood, and other 

 localities, also in meadows and pastures where that plant grows. 



53. A. Trifolii, Linn. 



Cure. TrifoUi, Mus. Linn. (Syst. Nat. iii. App. p. 224). 

 A. cBstivmn, Germ., Gyll., Steph., Schonh. 



— (c^) ruficrus, Germ., Schonh. 



— (y^x. ji.) flavifemoratum, Kirb. 



— (var.) Leachii, Steph. 



I have the pleasure of reviving and re-establishing, by means 

 of the Linnsean cabinet, the appropriate name of Linnseus to this 

 species. 



There is an insect preserved in the Linnsean collection (which 

 it is very remarkable has been overlooked by Marsham and 

 Kirby) that is well secured with gum upon a piece of paper, on 

 which is inscribed '^ TrifoUi '^ by Linnseus's own hand ; the name 



