100 



ROBERT TRACY JACKSON ON ECHINI. 



Table of Typical Ocular Plate Arrangement and Variation in the Cidaroida. 



a 



Order CIDAROIDA 

 Cidaridae 



74 



10 



281 



39 



34 



849 



17 



Cidaris coronala Goldfuss. 

 Jurassic, Nattheim and Sonntheim. (Text- 

 fig. 164.) 



Cidaris abyssicola (A. Agassiz). 

 Florida, 100-200 fatlioms. 



Cidaris cidaris (Linn6) . 



Off coast of Norway and Sweden. 



Cidaris affinis Philippi. 



Cuba to Yucatan, 45 fathoms; Florida (161 



specimens). 

 The same. 

 Metliterranean (120 specimens). (Text-figs. 



59-60.) 



Eucidaris melularia (Lamarck) . 

 Mauritius; Samoa; Hawaiian Islands. 



Eucidaris thouarsi (Valentin). 

 Gulf of California; Panama. 



Eucidaris tribuloides (Lamarck). 

 Jamaica; Bahamas; Florida; Bermuda. (Text- 

 figs. 02-69, 176.) 



Gonioddaris nutnx (Wyville Thomson). 

 Kerguelen Island; Antarctic. (Text-fig. 72.) 



Gonioddaris luharia (Lamarck). 

 Australia. 



Gonioddaris canaliculaia A. Agassiz. 

 Port William; Falkland Islands; Patagonia. 

 (Text-figs. 73-74.) 



Gonioddaris biserialis (Doderlein). 

 Japan. 



Phijllacardhus imperiaiis (Lamarck). 

 Caspar Straits, Dutch East Indies. 



Phyllacanlhus Ihomasii A. Agassiz and Clark. 

 Hawaiian Islands. 



100* 

 2* 



97 

 72 



90 

 9 



30 

 48 



11 

 13 



55 

 37 



16 

 5 



0.6 

 5 



S6 

 6 



12 

 2 



100 

 5 



0^ 

 1 



18 

 29 



5 



9 

 3 



3 



1 



IS 

 6 



S_ 



28 



10 

 1 



7 

 l2 



10 

 12 



2 



47 

 16 



5S 

 493 



0^ 

 1 



32 



17 



8^ 

 72 



6 

 2 



A 

 36 



35 

 6 



33 

 2 



6 

 1 



1 



20 

 33 



53 

 63 



6 

 2 



g5 

 209 



1 



u 



7 

 6 



100 

 3 



S3 

 2 



