462 Mr. T. D. A. Cockerell on Fossil Arthropods 
parallel rows are only very sparsely punctured *. The fossil 
shows no colour-bands, but they may have existed in life. 
There is a group of Leptinotarsa, represented by L. juncta 
and its immediate allies, in which the rows of punctures are 
single and even, as in C. allochlamys. 
Cerambycide. 
Leptura (?) bartoniana, sp. n. (Pl. XVI. fig. 12.) 
Elytron as preserved 9°5 mm. long, but apex lost, probable 
total length about 12 mm.; width 3 mm.; costal margin 
thickened ; humeral region with the usual large rounded 
prominence ; surface throughout coarsely punctured on the 
basal half, the punctures deep, suboval, inclined to be in 
longitudinal lines, but not regular, the intervals usually less 
than the width of a puncture, about seven punctures in 2 mm. 
longitudinally ; on apical half or more of elytron the punc- 
tures are fine and well separated ; on the descending outer 
face below the humeral angle, the punctures are large and 
run more or less in oblique lines. 
Bartonian, Lower Bagshot, Corfe Clay ; Creech, between 
Corfe and Wareham, Dorset (P. B. Brodie). From W. R. 
Brodie. Brit. Museum, 18997. 
This agrees with Leptura, so far as can be seen. Com- 
pared with the living L. eribripennis, it differs by being much 
less coarsely punctured in the apical region, and by the large 
punctures not being at all confluent. On the other hand, 
the punctures on the basal half are very much larger and 
coarser than in L. seamaculata or L. instabilis. 
Scarabeide. 
Pelidnotites (gen. nov.) atavus, sp.n. (Fig. 6.) 
Elytron about 18 mm. long, width uncertain; surface 
with rows of fine punctures (6 or 7 in 2 mm.), and widely 
scattered irregular similar punctures between. Humeral 
region with a well-defined thickened edge. A row of punc- 
tures proceeds backward from the obtuse humeral angle, 
very slowly diverging from the margin ; the next row of 
punctures is about 8 mm. from this on the basal part of the 
* The specimen of L. undecimlineata, Stal, before me was collected by 
Mrs. Cockerell at Antigua, Guatemala. It kas the pattern of head and 
thorax as in Tower's segregate L. diversa (‘The Mechanism of Evolution 
in Leptinotarsa, pl. 2. f. 4), but these parts are yellowish, nearly as in 
L. panamensis, and the elytral stripes are distinctly metallic green. It 
will stand as race guatemalensis, and is,I presume, the L. guatemalensis 
which Tower mentions but fails to describe. 
