EXPLANATION OF PLATE V. 
Fig. I . Rcistrites peregrinus , Barr. 
„ 2. 
99 
,, var. hybridus , Lapw. 
>> 3* 
Monographs attenuatus , Hopk. 
„ 4 a. 
99 
gregarius , Lapw. 4 b, portion enlarged. 
,» Sa - 
99 
argutus, Lapw. 5 b, portion enlarged. 
tt 6a ‘ 
99 
lobiferfaus , M‘Coy. 6b, portion enlarged. 
„ 7 a. 
99 
runcinatus , Lapw. 7 b, portion enlarged. 
„ 8a. 
99 
Sanders oni, Lapw. 8b, portion enlarged ; 8c, proximal 
extremity. 
„ 9 a. 
9 9 
exiguus, Nich. 9 b, portion enlarged. 
,, io a. 
tennis, Portl. (proximal extremity). 10 c, distal ex- 
tremity ; 10 b, portion enlarged. 
„ n. 
99 
tm riculatus, Barr. 
, 12. 
99 
spiralis, Geinitz. 
» 13- 
99 
crispus, Lapw. 
, 14. 
99 
triangulatus, Harkn. 
» I 5* 
99 
Sedgwickii, Portl. 
„ 16. 
99 
communis, Lapw. 
» 17. 
99 
fimbriatus, Nich. 
» 18. 
99 
proteus, Barr. 
» 19. 
99 
concinnus , Lapw. 
„ 20. 
9 9 
Hisingeri, Carr. Var .jaculum, Lapw. 
„ 21. 
99 
Barrandei, Suess. 
„ 22. 
99 
leptotheca , Lapw. 10 b, portion enlarged. 
» 2 3- 
99 
Riccartonensis , Lapw. 
,, 24a. 
9 9 
priodon. Brown. 2 \b, portion enlarged. 
» 25. 
9 9 
cyphus, Lapw. 
