498 BULLETIN: MUSEUM OF COMPARATIVE ZOOLOGY. 
fauna, outside of the rhynchophorous series, comprised a rather 
monotonous and little specialized lot of beetles. 
This paper, with another now in press elsewhere, will bring the 
number of published Coleoptera from these shales up to about 566 
species, and may be considered as very nearly ending the task of 
working up the available material. What remains consists of isolated 
species in various families so scattered through the whole order as not 
essentially to disturb the conclusions already reached in regard to the 
number and nature of the representation of each group. The rich- 
ness of this fauna remains absolutely unapproached by that of any 
other known deposit, unless the many unworked collections of Amber 
insects may yield a similar wealth. 
Citation of catalogue numbers follows the plan of Scudder, in 
joining by “and” those referring to the two halves of a single speci- 
men with its counterpart. The drawings are made with the camera 
lucida and will show the outlines, though not the sculpture, the latter 
being carefully described in the specific diagnoses. 
EUCNEMINAE. 
EUCNEMIS ANTIQUATUS Wickham. 
Described and figured in Bull. M. C. Z., 1914, 58, > 437, pl. 2, 
fig. 9. No other specimens have been met with. 
DELTOMETOPUS FOSSILIS, sp. nov. 
Plate) Lies dou 28 
Form fairly stout. Head rounded in front, surface finely, not very 
deeply and moderately closely punctate, bearing a scant covering of 
dark hairs. Antennae practically complete on one side, in life evi- 
dently reaching the prothoracic hind angles, first joint large, second 
short, third not in good condition but apparently rather long, fourth 
and following subequal, weakly serrate. Prothorax only a little 
broader than long, (as preserved), the sides nearly straight and, 
judging from the margins, about perfect, only a little sinuate in front 
of the base, hind angles (only one of which remains), scarcely diver- 
