*Argopatagus vitreus A. Agassiz, 

 Argopatagus planus (A. Agassiz 



and Clark), Plate 151, figs. 



6-8 



Nacospatangus A. Agassiz . . 



Key to the Species of Nacospatangus 



Nacospatangus gracilis A. Agas- 



zig, Plate 145, figs. 35-39 . 

 f Nacospatangus depressus H. L 



Clark, Plate 145, figs. 40~43 

 Palaeotropus Loven . . . 

 Key to the Species of Palaeotropus 

 Palaeotropus josephinae Love"n 



Plate 145, figs. 27-34 ■ ■ 

 Palaeotropus ovatus Koehler 

 Palaeotropus loveni A. Agassiz 

 Palaeotropus thomsoni A. Agas 



siz, Plates 145, figs. 44~46. 



158, figs. 6,7 



Pycnolampas A. Agassiz and 



Clark 



*Pycnolampas oviformis A 



Agassiz and Clark, Plate 147 



figs. 4-6 .... 



Homolampas A. Agassiz. . . 

 Key to the Species of Homolampas 

 Homolampas fulva A. Agassiz 



Plate 146, figs. 1-6 . . . 

 Homolampas fragilis (A. Agas- 

 siz), Plate 146, fig. 8 . . 

 Homolampas hastata A. Agassiz 



Plate 146, fig. 7 . . . . 

 Homolampas rostrata de Meijere 

 Hemiasteridae, fam. no v. . . . 

 Key to the Genera of Hemiasteridae 

 Platybrissus Grube . . . 

 Amphipneustes Koehler . . 

 Key to the Species of Amphipneustes 

 Amphipneustes lorioli Koehler 

 Amphipneustes mortensen 



Koehler 



Amphipneustes koehleri Mor 



tensen 



Agassizia Valenciennes . . 

 Key to the Species of Agassizia . 

 Agassizia scrobiculata Valen- 

 ciennes 



87 



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177 



* Hawaiian species. 



fNew specier 



