NIAGARA FALLS AND VICINITY 22/ 



Genus ceratiocaris AlcCoy 



[Ety. : /.^(xizcov, pod; xa/^cV, shrimp] 



(1849. ^ii}i- fiuig. not. Jiist. ser. 2, 4:412) 



Carapace consisting of a smooth, pod-shaped bivalved shell, with- 

 out eye nodes. Valves of -ocs-mi-- 



^ s fl ° ® t^ 



carapace elongate, subovate, ^^L '^^'^aB 



a 



or subcjuadrate, truncated be- .^1^^. ^"S^l^ 



hind. A free lanceolate ros- '?* ^^1^° 



trum occurs. Body of 14 or ' ^\. a-ll-l 



more segments, of which from ^\ '^Is^'" 



four to seven extend bevond :, , 'S'^i^S 



the carapace. Some of these \ "^'s-i'^w 



Found in the Waterlime 



n c h 



u s 



d e w e y i Hall 



(1852. 



Pal. 



A^. 



F. 2:320, pi. 



71) 









Distinguish 



ing 



characters. 



Large 



spine 



of 



telson only 



have obscure branchial ap- Ss-^^-S 



pendages. Telson a long, I ^|o£® 



pomted spine, with two smaller " g S ? s 



►_ UJ ^ « 



Ceratiocaris acuminata Hall ^ ISoSa 



" — "CO) 



lateral spines (cercopods) ar- | |^| 



ticulated to it. 



fQ M CB OJ 



(Fig. 159) (1859. Pcil. N. Y. 



3:422, pi. 84) \ Idl-^P 



Distill o-uishin^ characters. SiS^^^^'S 



3, O O c3 S >> 



TO ft _ t, •? fe 



Carapace large, tapering in 



front, broad medially and ' ! S is^l-i 



rather abruptly truncated on J i S^oS-^ 



posterior margin. Surface with ^2-^*- ^ 



very fine, raised longitudinal 1 ^;^|ft ^ 



lines. Penultimate segment \ ! ^^fel^ 



long; telson and cercopods \ i %Z%ri< 



short. ^g^^-S 



-c^ w 2 





beds of North Buffalo. I '^%l%^ 





Ceratiocaris (Phasganoca- ! |ftii« 



<D CS S CS 0) 



2"- 



ris?) deweyi Hall (Fig. 160) ^'^..^^ 



.1/ fl«5i^T3 



"2 t^ & " s 



■^ ■» o C S 



