579 



Fal^. 



Palaeocampa anthrax. 



Meek & Worthen. A thousand 



leg (Myriopod) enlarged to twice its natural size, found in a 

 nodule on Mazon Creek, Illinois ; with ten segments to its body ; 

 with bundles of needles or hairs, two rows of which are visible. 

 ZittePs Handbuch, II, 1885, p. 726, fig. 894. Found in a coal 

 measure nodule on Mazon Creek, 111., now in the collection of 

 Mr. Lacoe, at Pittston, Pa. See Proc. Acad. Nat. Sci. Phila., 

 1865, p. 52; Scudder, Mem. Bost. 8. N. H., Vol. 3, 1884, p. 

 293-297.— Coal Measures. XIIL 

 Paleeocaris typus. (Meek & Worthen, Illinois, Rt. Vol. 2, 



PI. 38 



p. 405, plate 32, fig. 5 ; Vol. 3, p. 552 ; Acanthotelson incequalis, 

 Rt. 2, p. 403, plate 32, fig. 7.) Collett's Ind. Rt. 1883, page 

 179, plate 38, fig. 1, enlarged three times^ type specimen, com- 

 pressed a little obliquely, causing the body segments to be a 

 little too broad ; fig. 2, enla'^ged four times^ telson and side 

 plates attached to tail segment ; fig. 3, enlarged four timesj 

 swimming paddle belonging to the belly. Above coal L, Ind. At 

 first supposed to be SinIsopod{ Acanthotelson)'^ afterwards better 

 specimens caused the establishment of a new Macrourian 

 genuB (Paleeocaris.) Collett. XIIL 



