CONTENTS. 



INTRODUCTION 



Page 



1 



Panamic Deep Sea Echini .... 



Desmosticba Haeckel 1 



Cidaridse Mailer, Figs. 1-45 .... 1 



Goniocidaridee Haeckel 20 



Dorocidaris A. Ag 20 



*Dorocidaris pauameusis A. Ag., Plates 



1-4 20 



Porocidaris Des 24 



* Porocidaris Milleri A. Ag., Plates 6-8 ; 



10, tigs. 1-3 25 



*Porocidaris Cobosi A. Ag., Plates 9; 



10, figs. 4-9; 11; 12; 13, figs. 1-4 29 



Centrocidaris A. Ag 32 



*Centrocidaris Doederleini A. Ag., 



Plates 5 ; 14, figs. 1,2; Figs. 46, 47 33 

 Saleuida; Agass., Figs. 48-65 ... 34 



Saleuia Gray 41 



*Salenia miliaris A. Ag., Plates 14, 

 figs. 3-11; 15, figs. 1,2; 16-19; 20, 

 figs. 1-4; Figs. 66-69, 71, 74, 75, 



79-85 41 



Arbaciada? Gray 53 



Dialitbocidaris A. Ag 55 



*Dialithocidaris gemmifera A. Ag., 

 Plates 15, figs. 3-5 ; 23 ; Figs. 86- 



89 56 



Aspidodiadematidse Duucan .... 58 



Dermatodiadema A. Ag 58 



*Dermatodiadema globulosum A. Ag. , 

 Plates 24, figs. 1-3; 26, fig. 2; 28, 

 figs. 3, 4 ; 29, figs. 5-7; Figs. 90-93, 



126, 127 60 



*Derniatodiadema horridum A. Ag. , 

 Plates 24, figs. 4-12; 25; 26, figs. 

 1, 3, 4; 27; 28, figs. 1, 2; 29, figs. 

 1-4; Figs. 94-125 63 



Echinothuridse Wyv. Thorn., Figs. 128- 



132 



Phormosoma Wyv. Thoin 



*Phormosoma liispiduin A. Ag. , Plates 



A ; B, fig. 1 ; 30-42 ; 43, figs. 5, 



6 ; 44-47 ; 48, figs. 2-6 ; 49 ; Figs. 



133-144 



*Phormosoma panamense A. Ag., Figs. 



145-150 



Phormosoma zealandia? A. Ag. , Plate 



51, figs. 1-4 



Phormosoma placenta Wyv. Thorn. 



Plates 43, figs. 1-4; 48, fig. 1 . . 



Kamptosoma Mort 



Kamptosoma indistiuctum A. Ag., 



Plate 50; Fig. 151 



Asthenosoma Grube 



Astheuosoma pellucidimi A. Ag. , Plate 



51, figs. 5-13 



Astheuosoma coriaceum A. Ag., Plate 



52 



Petalosticha Haeckel 



Cassidulidse Agass 



Nucleolida? Agass., Figs. 152-158 . 



Spatangidse Agass 



Pourtalesia? A. Ag. , Figs. 159-188 . 



Pourtalesia A. Ag 



*Pourtalesia Tauueri A. Ag. , Plates B, 



fig. 2 ; 55, figs. 1 , 2 ; 56 ; 57 ; Figs. 



189, 190, 191-194, 196, 199, 201 . 

 Pourtalesia miranda A. Ag., Figs. 202- 



205 



Npatagocystis A. Ag 



Spatagocystis Challenger! A. 



Plates 70 ; 71 ; Figs. 206-209 

 Echinocrepis A. Ag. ... 



Page 



75 

 86 



Ag., 



86 

 101 



105 



10!) 

 110 



110 

 113 



113 



115 

 117 

 117 

 117 

 121 

 121 

 132 



132 



139 

 141 



141 

 144 



* Panamic species collected by the " Albatross." 



