128 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 9 



rina, preoccupied) or its progenitor, but in the present state of our 

 knowledge this is pure speculation. 



Subgenus Euryarges, new 



Genotype. — Nect urges nesiotes, new species. 



This new subgenus is proposed for the sole reception of Nectarges 

 nesiotes. It is defined above, in our key, and discussed below, under the 

 relationships of A'', nesiotes. 



{Euryarges, from Eu/ars, broad, and 'ApyT/s, ^to?, 6, bright or silvery, 

 with reference to the wide, silvery band.) 



Nectarges nesiotes, new species 

 Plate 18 



Eurystole eriarcha (in part, nee Jordan and Gilbert) Seale, 1940, p. 44 

 (Black Beach Anchorage, Charles Island, Galapagos). 



Holotype. — AHF no. 17. 



Type locality. — Station 809-38 ; Academy Bay, Indefatigable Island, 

 Galapagos, Januarj'^ 25, 1938, dip-net under electric light, from Velero 

 III at anchor, G. S. Myers, collector. 



Paratypes. — Five specimens,- 31.5-50.5 mm, same data as holotype. — 

 Station 805-38: 2 specimens,-"* 31.5-51.5 mm. Black Beach Anchorage, 

 Charles Island, Galapagos, January 23, 1938, dip-net under electric 

 light, from Velero III at anchor, G. S. Myers, collector. 



Other Tuaterial examined. — CAS 6039 : 2 specimens, Black Beach 

 Anchorage, Charles Island, Galapagos, January 17, 1934, Velero III, in 

 poor condition. 



Range. — Known only from the Galapagos Archipelago. 



Measurements of holotype in mm. — Standard length 48.8, depth 

 12.4, head length 11, head width 6, ej'^e 4, maxillary 3.8, interorbital 3.9, 

 caudal peduncle length 10.5, caudal peduncle depth 4.7, tip of snout to 

 anal origin 25.1, anal origin to caudal base 25.1, predorsal length 24.8, 

 origin of first dorsal to caudal base 25.1, caudal base to origin second 

 dorsal 18.5, postorbital length 4.1, pectoral length 8.1. 



Description. — Body elongate, compressed, deep anteriorly, tapering 

 to a narrow caudal peduncle, depth 3.9-4.2 in standard length. Dorsal 

 outline of body cui-ving moderately and evenly, or with only a slight 



2 Two of this lot in Stanford Natural History Museum (no. 37058). 



3 One of this lot in Stanford Natural History Museum (no. 37059). 



