458 Mr. T. D, A. Cockerell on Fossil Arthropods 
Elaterites sculptilis, sp. n. (PI. XVI. fig. 9.) 
Elytron 7 mm. long and 1°8 mm. wide, the base truncate, 
the apex pointed. Nine delicate striz, very finely punctate, 
the four inner ones with the punctures subobsolete, the 
others with distinct though very delicate punctures. The 
outer striz are more closely placed than the four inner ; 
the fifth stria (from within) is one mm. from inner margin. 
Punctures on outer strie about 95-130 apart. Between 
the inner series of striz the surface is extremely finely 
rugulose, with lines inclined to be transverse or oblique, but 
irregular, as in the living Cardiophorus fenestratus, Lec. 
“ Corfe, I. of Purbeck” (Brodie); Brit. Museum, 10420. 
“Studland Bay, I. of Purbeck, Dorset” (Brodie) ; Brit. 
Museum, 10422. These are the two impressions of the 
same specimen. 
Elaterites palaophilus, spa, o0P Lx Va es 2.) 
Elytron as preserved 6 mm. long, but the ends missing ; 
probable total length at least 9 mm. Width 2:4 mm.; dark 
brown, with eleven rows of round punctures ; the rows close 
together, aud the punctures so placed that often two of one 
row and two of the next will mark the four corners of a 
square space ; punctures about 6 in a mm. lengthwise, and 
five rows trausversely in a mm., but tlie first three rows are 
more widely spaced than the others. 
Lower Eocene ; Woolwich and Reading Beds, Peckham. 
Caleb Evans collection. Brit. Museum, 1467. 
Someone had already labelled it “ élater.’ (See also 
Smith, ‘ Geologist,’ iv. (1861) p. 40.) 
Curculionide. 
Curculionites marginatus, Gicbel. 
Elytron convex, about 6 mm. long and 3 mm. wide; with 
six visible (probably one or two obliterated) longitudinal 
rows of very large deep punctures, squarish and somewhat 
longer than wide. Hach row contains about 20 punctures, 
and there are between 4 and 5 punctures in 2 mm. lonei- 
tudinally. Transversely, there are 5 rows in 2 mm. The 
intervals between the punctures are not larger, but often 
rather smaller, than the punctures themselves. 
Bagshot Series, Corfe, Dorset (Brodie). Brit. Museum, 
10417. This is the type-specimen of Giebel’s C. marginatus, 
