48 WicJcham — New Fossil Coleoptera from Florissant. 



tate. Compared with P. tartareas Scudder, from the Floris- 

 sant shales, the specimen in hand has the humeral angles less 

 rounded and the elytral apices decidedly less truncate. The 

 remainder of the body is too poorly preserved for study, and 

 it seems scarcely wise to impose a specific name. 



Station number 13a. Collection numbers 114 and 155, 

 Florissant Expedition 1906. Collected by Mrs. W. P. 

 Cockerell, and received from Professor Cockerell. Specimen 

 in the Peabody Museum of Yale University, Cat. No. 11. 



JPeltis Illiger. 



P. laminata n. sp. Form oblong-elliptical, similar to that 

 of the recent North American P. piping skoeldi. Head larger 

 than in that species, somewhat dilated by pressure. Prothorax, 

 as preserved, broader shortly in front of the base, sides arcu- 

 ately narrowed to apex which is broadly emarginaie, front 

 angles a little greater than right, hind angles obscure but 

 apparently obtuse and rounding, a faint basal marginal line 

 somewhat as in Colorado specimens of the recent P.ferruginea. 

 Elytra slightly broadest at base, where they are a little wider 

 than the prothorax, scarcely perceptibly narrower to a point 

 behind the middle, thence rapidly arcuately narrowed to the 

 apices, which are nearly pointed and (through distortion) 

 dehiscent. The disk shows traces of having been finely striate 

 but the sculpture of the entire surface is now scabrous and 

 obscure. The sexual organs are protruded from the tip of the 

 body but show no definite structure. Length, including 

 extruded sex organ, 12'50 mm ; of prothorax along median line, 

 2-25 mm ; of elytra, 6'60 mm ; width of prothorax, 5 mm ; of elytra 

 conjoined, 6-25 mm . 



In outline, this insect quite closely recalls several recent 

 species of Peltis, though the form of the thorax is slightly 

 nearer that of Calitys scdbra. However, the thoracic and 

 elytral margins are perfectly clear-cut and entire as in Peltis, 

 while in our Calitys they are coarsely serrate. The antennas 

 and legs are not shown. 



Station number R. 4. Collection number 145, Florissant 

 Expedition 1906. Received from Prof. Cockerell. Holotype 

 in the Peabody Museum of Yale University, Cat. No. 12. 



Atcenius Harold. 



A. patescens Scudder. One specimen, in reverse, exceeding 

 Scudder's measurements by about *50 mm , is included in the 

 collection. The state of preservation is only fair and no 

 important characters can be added to the original description. 



Station number 14. Collection number 207, Florissant 

 Expedition 1906. Received from Prof. Cockerell. 



