M TKRT1AEY INSECTS OF NORTH AMERICA. 



pair of legs, ' li;.5""", , 14'"; tibiae, f 5""", ,4"""; t.-irsi. ! 5 mm , ? 5.75 mm ; 



second pair of legs, ! IT.' 12.75"""; tibisr, ' 3.25 , 2.f."' m : tarsi, <? 6 mm , 



5.5 mm ; third pair of le->. 7"""; tibia?, J 1.7")""": tarsi, ,3""": fourth pair 

 of legs, ' 12""", ; 13""": tibia-, ' 3 5 mm , i 3.:)""": tarsi, y 4.4""", ? 5 mm ; length 

 of palpi, ' 1.75""", , 2.1""". 



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

 described by its considerably larger >i/.c. It is named alter the late Mr. F. 

 I). Meek, miicli of whose paleontological work was done in conjunction 

 with \1v. llayden. It resendiles in general a|ipcarancc as well as in size 

 the le-> \\ell preserved K. trb'schelii Bertkau from Rott on the Rhine, but 

 has proportionally longer legs and especially much longer hind legs ; the 

 disproportion of si/e between the cephalothorax and abdomen is also greater 



Florissant. Three specimen-: two ', Nos. 9211, 8221, one $, No. 3204. 



2. I'JM.llx'A AUSCOXDITA. 

 I'l. 11. Fig. 7 (S). 



Male. Cephalothorax subrotund, the cephalic portion hemispherical, 

 almost Klack, about half the si/e 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, furmin^ a broad, median, dark brown band. 

 Abdomen subrotiind. longer than broad, MM reel \ compressed, of the same 

 si/.e as the cephalothorax, with taint 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 

 trout, larjre and globose, perhaps a little broader posteriorly than anteriorly. 

 The le.u's are .stout, especially the femora, not very Ion-, the tibite furnished 

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

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

 M-rved, but have been worked out of the stone since the plate was engraved, 

 so that they are more perfect than would there appear. The fourth pair, 

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

 the basal joints aie longer. 



Length of bodv. I. _'.)""": of cephalothorax, 2 mm : of abdomen, 2.25'" m ; 

 width of same, 1.8""": length of first pair of legs, 11.25 min ; tibi.v, 3""" ; tarsi. 

 n: ; second pair of legs, !.7:>"""; tibia?, 2.f> n "" ; tarsi, 3.4""" ; third pair of 



