628 



ARTHROPODA 



SUB-KINGDOM VII 



Olenellus, Hall. Fourteen free segments ; pygidium a long telson-like s])inc. 

 Lower Cambrian ; North America and Europe. 



Holmia, Matthew (Fig. 1294). Sixteen free 

 segments ; pygidium a small plate without apparent 

 segmented divisions. Lower Cambrian ; Norway. 



Remopleurides, Portlock 

 (Fig. 1295). Glabella ex- 

 panded ; axis wide ; free seg- 



FIG. 1293. 



Paradoxides (cf. 

 young of P. inflatus, 

 Corda sp. = Hydro- 

 cephalus carens, 

 Barr.). Cambrian; 

 Skrey, Bohemia. 



FIG. 1294. 



Jliilmia Kjerulfi, Linnarson. Cambrian; 

 Ringsaker, Xorway. Part of the glabella 

 removed, exposing hypostoma beneath. 3/ 4 

 (after Holm). 



FIG. 1292. 



Paradoxides BoTiemicus, Barr. Cam 

 brian (Et. C) ; Ginetz, Bohemia. i/ 2 . 



FIG. 1295. 



Remopleurides 

 (Cuphyrct) radians, 

 Barr. O r d o v i c i a n 

 (Et. D) ; Konigshof. 

 Bohemia, l/i (after 

 Barrande). 



FIG. 129(3. 



Eurycare brevicauda, Ang. Cambrian 

 Andrannn, Sweden (after Angelin). 



ments eleven to thirteen ; pygidium small, axis often reduced to two annulations, the 

 pleural portion produced behind into a flat expansion. Ordo- 

 vician ; Europe and North America. 



Eurycare, Angelin (Fig. 1296). Cephalic shield short, 

 posterior angles produced into long curved spines ; thoracic 

 segments seven to nine. Cambrian ; Europe. 



Olenus, Dalmau (Fig. 1297). Glabella defined, not narrow- 

 ing anteriorly ; thoracic segments twelve to fifteen, pleura with 

 sharp-pointed extremities, bent backwards; axis narrow, pygidium 

 small. Cambrian and Ordovician ; Europe. 



Ptychoparia, Corda (Fig. 1288, C). Resembles Olenys, but 

 with tapering glabella, wrinkled limb, and larger pygidium. 

 Cambrian ; Europe and North America. 



Agraulus, Corda. Body elongate oval ; cephalic shield large, 

 paraboloid, limb broad ; eyes small ; thoracic segments sixteen ; pygidium small, with 

 rounded margin and three annulations in the axis. Cambrian ; Europe and North 

 America. 



FIG. 1297. 



oli iiii*ti-tni<-<!t>ts, Briinn. 

 Cambrian ; Andrarum, 

 Sweden (after Angelin). 



