BULLETIN 100, UNITED STATES NATIONAL MUSEUM. 



OPHIOPLINTHACA GLOBATA, new species. 

 OPHIOPLINTHACA HASTATA, new species. 

 Ophioplinthaca pulchra Koehler. 

 Ophioplinthaca rudis Koehler. 

 , Ophiocamax rugosa Kcehler. 



Order III. GNATHOPHIURIDA. 

 Family AMPHIURIDAE Ljungman, 1867 (emended Matsumoto, 1915). 



Amphiura agitato, Koehler. 

 Amphiura amMgua Koehler. 

 AMPHIUBA COMMUTATA, new species. 

 AMPHIUBA DEJECTA, new species. 

 AMPHIURA DIMESSA, new species. 

 Amphiura diomcdcac Liitken and Mortensen. 

 Amphiura grandisquama Lyman. 

 Amphiura uncinata Koehler. 

 Amphiura vadicola, Matsumoto. 

 AmphiphoUs kochii Liitken. 

 AMPHIPHOLIS LOBIPES, new species. 

 Amphipholis misera (Koehler). 

 Amphiodia crassa (Koehler). 

 AMPHIODIA DEBITA, new species. 

 AMPHIOPLUS LEGATUS, new species. 

 AMPHIOPLUS CONDUCTUS, new species. 

 Amphioplus imprcssus (Ljungman). 

 AMPHIOPLUS LUCIDUS, new species. 

 AMPHIOPLUS LUCTATOR, new species. 

 Amphioplus relictns (Koehler). 

 Amphioplus rhadinobrachius H. L. Clark. 

 AMPHILIMNA MULTISPINA, new species. 

 Ophiactis afflnis Duncan. 

 OPHIACTIS DEFINITA, new species. 

 Ophiactis maculosa Martens. 

 Ophiactis profundi Liitken and Mortensen. 

 Ophiactis savignyi (Miiller and Troschel). 

 Ophiopholis mirabilis (Duncan). 

 Ophiocentrus aculeatus Ljungman. 

 Ophiocentrus aspcr (Koehler). 

 OPHIOCENTRUS VEXATOR, new species. 



Family AMPHILEPIDAB Matsumoto, 1915. 



Amphilepis protecta Kcehler. 

 AMPHILEPIS REMITTENS, new species. 

 Amphiactis duplicata (Lyman). 



Family OPHIOTRICHIDAE Ljungman, 1867. 



Ophiothrix aristulata Lyman. 

 Ophiothrix armata Koehler. 

 Ophiothrix aspidota Mtiller and Troschel. 

 OPHIOTHRIX BELLAX, new species. 

 Ophiothrix capillaris Lyman. 



