in the British Museum. 461 
Chrysomelide. 
Chrysomelites allochlamys, sp.n. (Fig. 5.) 
Elytron about 75 mm. long and 43 mm. broad ; 
moderately convex but flattened on disc, broadly truncate 
at base, obtuse at apex; nine lines of round rather large 
punctures; one near the inner margin, and four pairs of 
parallel lines, two near middle of disc, and two, close together, 
not far from outer margin ; between the pairs of lines the 
surface is very densely covered with punctures of the same 
size as those in the lines. In oneof the lines there are about 
seven punctures to a mm. 
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Chrysomelites allochlamys. 19008. 
Bartonian ; Bagshot Beds, Bournemouth (J. S. Gardner). 
Brit. Museum, 19008, with reverse. 
The type of Chrysomelites is C. prodromus, Heer, from the 
Lower Lias of Switzerland, an insect certainly not congeneric 
with the present species. But I follow Scudder in treating 
the name as applicable to fossil Chrysomelide of unknown 
generic position, although it seems probable that our insect 
should be made the type of a new genus. It has a curious 
resemblance to Smodicoptera liasina (Heer), from the Lower 
Lias of Switzerland. Heer considered Smodicoptera to be a 
Buprestid (Euchroma), but our species certainly cannot 
belong to that family. In ‘ Die Insektenfauna der Tertiar- 
gebilde von Oeningen und von Radoboj’ (1847), plate viu., 
Heer undertook to illustrate the primitive or fundamental 
pattern of a Coleopterous elytron, and according to this 
system C. allochlamys may be considered a primitive form. 
Such a pattern persists in the modern Leptinotarsa, but that 
typically differs from our fossil in having the rows of 
punctures much more irregular and (especially L. undecim- 
lineata) double at least in part, while the intervals beween the 
