Cionobrissus A. Agassiz . . 



Plethotaenia, gen. nov. . . 



Linopneustes A. Agassiz . . 

 Key to the Species of Linopneustes 



Linopneustes murrayi (A. Agas 

 siz) 



Linopneustes excentricus de 

 Meijere 



Linopneustes longispinus (A 

 Agassiz), Plate 146, fig. 12 . 



Elipneustes Koehler . . . 

 Key to the Species of Elipneustes 



Elipneustes denudatus (Koehler) 



Elipneustes rubens (Koehler) 



Eupatagus Agassiz and Desor 



Gymnopatagus Doderlein 

 Key to the Species of Gymnopatagus 



Gymnopatagus valdiviae Doder- 

 lein 



f Gymnopatagus micropetalus 

 H. L. Clark, Plates 146, fig 

 14; 154, figs. 4-6; 158, fig. 5 



*Gymnopatagus pulchellus A 

 Agassiz and Clark, Plate 159 

 figs. 2-6 



Gymnopatagus magnus A 

 Agassiz and Clark, Plates 146 

 fig. IS; 159, fig. 1 . . . 



*Gymnopatagus obscurus A 

 Agassiz and Clark, Plate 158 : 



figs. 1-4 



Spatangus 0. F. Miiller . . 

 Key to the Species of Spatangus . 

 Spatangus purpureus O. F 



Miiller 



Spatangus raschi Loven . . 

 Spatangus capensis Doderlein 

 f Spatangus calif ornicus H. L 



Clark, Plates 146, fig. 20; 149, 



fig. 4; 156, figs. IS; 157, fig. 10 

 Spatangus altus Mortensen . . 

 *Spatangus paucituberculatus A. 



Agassiz and Clark, Plates 146, 



fig. 19; 157, figs. 7-9 . . . 

 Spatangus inermis Mortensen . 

 Spatangus lutkeni A. Agassiz, 



Plates 146, fig. 17; 157, figs. 5,6 

 Spatangus pallidus H. L. Clark, 



* Hawaiian species. 



t New species. 



