ECIIINOIDKA. II. 



189 



Cljpeaster subdepressus 

 Echinanthus rosaceus 

 Echinarachnius panna 

 Mellita sexforis 

 Neolampas rostellata 

 Echinolampas depressa 

 Conolampas Sigsbei 

 Rhyncopygus caribbaeannii 

 Urechinus naresianus 

 Pourtalesia niiranda 

 — Wandeli 



Aeropsis rostrata 

 Aceste bellidifera 

 Pala;otropns Josephince 

 Thoiiisoiii 

 Homolanipas fragilis 

 Palaeopneustes cristatus 



— hystrix 



Linopneustes longispinns 

 Pateobrissus Hilgardi 

 Hemiaster expergitus (Mentzi) 

 Agassizia exceiitrica 



Periaster limicola 

 Brisaster fragilis 

 Schizaster orbignyamis 

 Macropnciistcs spataiigoides 

 Brissus unicolor 

 — Damesi 

 Metalia pectoralis 

 Meoina ventricosa 

 Rhinobrissus niicrasterioides 

 Biissopsis alta 



— atlantica. 



Of these species two may be eliminated as intruders from the Arctic littoral region, viz. Stron- 

 gylocciitrofus drubacliioisis and Echiiiaraclinius panna, while some other species are only occasional 

 visitors from the littoral region, viz. Cidaris tribuloidcs, Diadema antillarum, Arbacia punctulata, Cly- 

 pcaster subdepressus, Echinantliiis rosaceiis, Rhyncopygus caribbaarum, Adetalia pectoralis, Meoma ven- 

 tricosa and Brissus unicolor. The same probably holds good for Psammechimts variegatus, Tripneustes 

 esculentus, Echinoinetra lucunter and Mellita sexforis. Of the rest the following species are known 

 also from the European or African side of [the Atlantic: 



Dorocidaris papillata 

 Cidaris affinis 

 Stereocidaris ingolfiana 

 Phormosoma placenta 

 Calveria hystrix 

 Arasosoma fenestratum 

 Hygrosoma Petersi 

 Dermatodiadema antillarum 

 Salenia hastigera 



Trigonocidaris albida 

 Genocidaris maculata 

 Echinus elegans 



— Alexandri 



— affinis 

 Echinocyamus grandiporus 

 Clypeaster subdepressus 

 Neolampas rostellata 



Urechinus naresianus 

 Pourtalesia Wandeli 

 Aceste bellidifera 

 Homolampas fragilis 

 Hemiaster expergitus 

 Brisaster fragilis 

 Brissus Damesi 

 Brissopsis atlantica (?). 



Further two species, Salenia Pattcrsoni and Coelopleurtis Jloridamis, are known also from the 

 South African Sea, and one, Aspidodiadeina tonsuui, occurs also in the Pacific. 



The remaining 32 species are known only from this region (and jiartly from the East American 

 littoral regiou, which cannot be sharply limited against the deep-sea region). These species are the 

 following: 



Dorocidaris abyssicola 



— Blakei 



— micans 

 Tretocidaris Bartletti 

 Histocidaris Sharreri 

 Arasosoma Belli 

 Tromikosoma Koehleri 

 Aspidodiadema Jacobyi 

 Hemipedina cubensis 

 Podocidaris scutata 



— sculpta 



Salenia goesiana 

 — varispina 

 Echinus gracilis 

 Pygastrides relictus 

 Clypeaster latissimus 

 Echinolampas depressa 

 Conolampas Sigsbei 

 Pourtalesia miranda 

 Aeropsis rostrata 

 Palceotropus Josephime 

 — Thomsoni 



Palaeopneustes cristatus 



— hystrix 



Linopneustes longispinns 

 Palfeobrissus Hilgardi 

 Agassizia excentrica 

 Periaster limicola 

 Schizaster orbiguyanus 

 Macropneustes spataugoides 

 Rhinobrissus niicrasterioides 

 Brissopsis alta. 



