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, p. 437, pi. 2, 

 fig. 9. No other specimens have been met with. 



Deltometopus fossilis, sp. nov. 



Plate 1, fig. 1, 2. 



Form fairly stout. Head rounded in front, surface finely, not very 

 deeply and moderately closely punctate, bearing a scant covering of 

 dark hairs. Antennae pl'actically 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- 



