Wickham — New Fossil Coleojptera from Florissant. 47 



Art. TV. — New Fossil Coleoptera from Florissant^ with 

 Notes on some already described / by H. F. Wickham. 



Calosoma Web. 



C. Gockerelli n. sp. A piece of a wing cover lacking both 

 base and apex is referred to this genns. It represents a species 

 about the size of C. calvini m., from the same shales. The 

 elytron is marked with sixteen well impressed punctured striae, 

 besides an indeterminate number (perhaps two) closer to the 

 outer margin. The interspaces are nearly four times as wide as 

 the diameter of the punctures in most parts of the area, but in the 

 neighborhood of the apex of the tenth and eleventh striae the 

 punctures are much larger than elsewhere and are equal in 

 diameter to the interstitial width. In general, the punctures 

 are rounded or slightly elongate and they are separated longi- 

 tudinally by spaces about equal to their own diameters. The 

 elytral surface shows no indication ' of the coarse imbricate 

 scabrosity of the interatrial spaces which is evident in our 

 recent North American C. calidum* nor are any series of inter- 

 stitial punctures visible. The interspaces are apparently 

 slightly convex. Length of fragment about 9*25 mm , greatest 

 width*6'15 mm . 



Station number not given. Collection number 232, Florissant 

 Expedition 1906. Received from Prof. Cockerell. Holotype 

 in Peabody Museum of Yale University. Cat. ~No. 10. 



Pterostichas Bon. 



P. jpumjpellyi Scudder. An elytron showing obverse and 

 reverse is referred here with fair certainty. The elytral striae 

 are nine in number and are more clearly exhibited on the 

 reverse. They are fine, sharp, fairly deep, perfectly smooth, 

 the interspaces moderately convex. The scutellar stria joins 

 the first at about L75 mm from the base. Length 9-75 ram , 

 width 3-40 mm . 



Station number 13. Collection number, obverse 87, reverse 

 65, Florissant Expedition 1906. Received from Prof. 

 Cockerell. 



Platynus Bon. 



A specimen in obverse and reverse, believed to belong to 

 this genus, is among the material sent by Prof. Cockerell. 

 The elytra are 6 - 20 mm in length, and have a conjoint width of 

 4*10 mm at middle. They are finely striate, about as in our 

 recent P. placidus, and are apparently almost or quite impunc- 



