CONTENTS. 



Introduction 



Page 

 1 

 1 

 1 



20 

 20 



Panamic Deep Sea Echini 



Desmosticba Haeekel 



Cidaridte Miiller, Figs. 1-45 . . . 

 Gonioeidaridae Haeekel .... 



Dorocidaris A. Ag 



*Doroeidaris pauamensis A. Ag., Plates 



1-4 20 



Poroeidaris Des 24 



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



10, figs. 1-3 25 



*Porocidaris Cobosi A. Ag., Plates 9; 

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



Centrocidaris A. Ag 32 



*Centroeidaris Doederleini A. Ag., 



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

 Salenidoe Agass., Figs. 48-65 ... 34 



Salenia 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 



Arbaciadse Gray 53 



Dialithocidaris A. Ag 55 



*Dialithocidai'is gemmifera A. Ag., 

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



89 56 



Aspidodiadematidse Duncan .... 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 



*Dermatodiadema 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 



Page 



Echinothuridae Wyv. Thorn., Figs. 128- 



132 



Phormosoma Wyv. Thom 



*Phormosoma hispidum A. Ag., Plates 



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



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



133-144 



*Phonnosoraa panamense A. Ag., Figs. 



145-150 



Phormosoma zealandia? A. Ag. , Plate 



51, figs. 1-4 



Phormosoma placenta "Wyv. Tliom. 



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



Kamptosoma Mort 



Kamptosoma indistinctum A. Ag. , 



Plate 50; Fig. 151 



Asthenosoma Grube 



Asthenosoma pellucidum A. Ag. , Plate 



51, figs. 5-13 



Asthenosoma coriaceum A. Ag., Plate 



52 



Petalosticha Haeekel 



Cassidulidae Agass 



Nucleolidae Agass., Figs. 152-158 . 



Spataugid.ne Agass 



Pourtalesiae A. Ag., Figs. 159-188 



Pourtalesia A. Ag 



*Pourtalesia Tanneri A. Ag. , Plates B, 



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



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

 Pourtalesia rairanda A. Ag., Figs. 202- 



205 



Spatagocystis A. Ag 



Spatagocystis Challengeri A. Ag., 



Plates 70; 71; Figs. 206-209 . . 

 Echinocrepis A. Ag 



86 



86 



lOi 



105 



109 

 110 



110 

 113 



113 



115 

 117 

 117 

 117 

 121 

 121 

 132 



132 



139 

 141 



141 

 144 



* Panamic species collected by the "Albatross." 



