84 TERTIAKY INSECTS OF NORTH AMERICA. 



pair of legs, S 16.5""", $ 14™"'; tibia?, S 5"™, $ 4""; tarsi, S 5'"™, J 5.75°""; 

 second pair of legs, S 15"", ? 12.75""" ; tibiae, <? 3.25""", ? 2.5"°" ; tarsi, $ 6"", 

 ? 5.5""'; third pair of legs, $ 7""; tibia?, ? 1.75"™; tarsi, ? 3""; fourth pair 

 of legs, S 12"", i 13""; tibia?, <? 3 5"", $ 3.5"" ; tarsi, i 44"", ? 5"" ; length 

 of palpi, S 1.75"", 2 2.1"". 



This spec es is readily distinguished from the others of the genus here 

 described by its considerably larger size. It is named after the late Mr. F. 

 B. Meek, much of whose paleontological work was done in conjunction 

 with Dr. Hayden. It resembles in general appearance as well as in size 

 the less well preserved E. troschelii Bertkau from Rott on the Rhine, but 

 has proportionall)' longer legs and especially much longer hind legs ; the 

 disproportion of size between the cephalothorax and abdomen is also greater. 



Florissant. Three specimens; two S, Nos. 9211, 8221, one 2, No. 3204. 



2. Epeira abscondita. 

 PI. 11, Fig. 7(3). 



Male. — Cephalothorax subrotund, tlie cephalic portion hemispherical, 

 almost black, about half the size of the thoracic part and separated from it 

 in the lateral outline by a distinct incision ; front broadly and regularly 

 rounded ; thoracic portion with well rounded sides, the middle half very 

 much darker than the rest, forming a broad, median, dark brown band. 

 Abdomen subrotund, longer than broad, scarcely compressed, of the same 

 size as the ceplialothorax, with faint indications of a broad median band, 

 deepest in tint at the extremities of the segments. The eyes can not be 

 seen. The palpi are sessile, the terminal joint appearing just beyond the 

 front, large and globose, perhaps a little broader posteriorly than anteriorly. 

 The legs are stout, especially the femora, not very long, the tibife furnished 

 with distant, widely divergent, delicate bristles, considerably longer than 

 the width of the tibia, situated on either side. They are not completely pre- 

 served, but have been worked out of the stone since the plate was engraved, 

 so that they are more perfect than would tliere appear. Tlie fourth pair, 

 though not completely preserved, is apparently longer tlian the second, as 

 the basal joints are longer. 



Length of body, 4.25""; of cephalothorax, 2""; of abdomen, 2,25""; 

 widthof same, 1.8""; length of first pair of legs, 11.25""; tibia% 3"™ ; tarsi, 

 4.6""; second pair of legs, 9.7.'")"": tibia^, 2.5"""; tarsi, 3.4™"; third pair of 



