T. D. A. Cocker ell — Descriptions of Tertiary Insects. 57 



preserved, and the existence of only three posterior cells is 

 certain. The anal cell in the S. African Syst? 7 opus crudelis 

 (as figured by Sharp) is like that of P achy systr opus. 



P achy systr opus rohioeri sp. nov. Fig. 1. 



Black or dark brown, the wings hyaline, with dark nervures; 

 apical half of area between radius and costa fuliginous ; 

 length (excluding proboscis) 13^ mm ; proboscis rather stout, 

 a little over 3 mm long ; antennae 2| mm , the last joint very sharp- 

 pointed, 663 fi long ; width of thorax 4 mm ; of the parallel-sided 

 abdomen about 2| mm , its apex not swollen ; lateral anterior 

 corners of first three abdominal segments (especially the sec- 

 ond) projecting at an acute angle ; fourth and fifth segments 

 with dark hair at sides ; hind femora about 4 mm long, stout, 

 the posterior side with much long dark hair ; length of wing 

 8f mm ; base to anterior cross- vein 5| mm . 



Hah. — Florissant, in the Miocene shales, Sta. 9. (S. A. 

 Pohiver, 1906.) 



Holotype in Peabody Museum (Yale). 



Callimyia (?) hypolitha sp. nov. (Platypezidae). 



A small stout-bodied fly with long wings ; as preserved, the 

 head and thorax are dull black ; the abdomen conspicuously 

 shining, dark reddish-brown, with the hind margins of the 

 segments black ; wings hyaline, nervures pale. 



Length of body 4J mm , of wing 4±- ; length and width of 

 abdomen each about 2J mra , but the apex is not visible (appar- 

 ently turned downwards) ; thorax robust ; head broad, but not 

 quite so wide as thorax. 



Venation, as preserved (the subcosta, radius and branches, 

 and anterior cross-vein are visible), exactly as in Callimyia 

 (Willst., K Am. Dipt., 3d ed., p. 242, f. 2) except that I 

 cannot demonstrate any spinulosity on the radius, but the veins 

 are so nearly the color of the rock that this might well be 

 invisible. The first posterior cell is widely open, as in Calli- 

 myia. The subcosta ends on the costa at about the middle. 



Hob. — Near Rifle, Colorado, in Eocene rocks ; the locality 

 and other particulars being the same as already given for 

 Tetragon ear a peritula. 



Only two Tertiary Platypericlae have been previously de- 

 scribed ; Oppenheimella baltica Meunier, from amber ; and 

 Callimyia, torporata, Scudder, from the Green Kiver beds of 

 Wyoming. C. hypolitha is a much larger species than C. 

 torporata. 



Since writing the above I have found the reverse impression 

 of C. hypolitha , showing the anterior branch of the media 



