234 BULLETIN 100, UNITED STATES NATIONAL MUSEUM 
GAIDIUS BREVICAUDATUS (Sars) 
Chiridius brevicaudatus Sars, Bull. Inst. Océanogr. Monaco, No. 101, p. 7, 1907. 
Gaidius brevicaudatus Sars, Rés. camp. sci. Albert de Monaco, No. 69, p. 48, pl. 15, 
figs. 1-18, 1925. 
Stations 4700;4707. Six females from these two stations were iden- 
tified by Sars as belonging to this species. They are the first to be re- 
ported since the species was originally established, and as all the previ- 
ous specimens were from the Atlantic they are the first recorded from 
the Pacific. 
GAIDIUS BREVISPINUS (Sars) 
Chiridius brevispinus Sars, Norwegian North Polar Expedition, vol. 5, Crustacea, 
p. 68, pl. 19, 1900. 
Gaidius brevispinus Sars, Rés. camp. sci. Albert de Monaco, No. 69, p. 48, 1925. 
Stations 2195 ; 2859 ; 2861; 4638; 47115 4715 ; 4721; 4758; 4760; 4793; 
4806; 5175; 5176; 5224; 5227; 5230; 5233; 5309; 5312; 5340; 5382. 
Identified by Sars from 6 of these Albatross stations and from 2 
Monaco stations and present in the Carnegie plankton. It has been 
reported incidentally by several authors, but this is the first record 
from the Pacific. 
GAIDIUS MINUTUS Sars 
Gaidius minutus Sars, Bull. Inst. Océanogr. Monaco, No. 101, p. 10, 1907; Rés. 
camp. sci. Albert de Monaco, No. 69, p. 49, pl. 14, figs. 14-18, 1925. 
Station 4707. Sars identified as belonging to this species four fe- 
males taken in a vertical tow from a depth of 300 fathoms at this sta- 
tion between Easter Island and the Galapagos. It was reported from 
the Indian Ocean by Sewell (1929, p, 100). 
GAIDIUS PUNGENS Giesbrecht 
Gaidius pungens GiESBRECHT, Bull. Mus. Comp. Zool., vol. 25, No. 12, p. 248, pl. 
1, figs. 14, 1895. 
Stations 2; 18; 474; 4574; 4691; 4740. Eight females were identi- 
fied by Sars from all but one of these stations as belonging to the 
present species. The original specimens upon which Giesbrecht es- 
tablished the species came from the northern Pacific. Easterly (1905, 
p. 146) has reported it off the coast of southern California, but it oc- 
curs in none of the plankton lists. 
GAIDIUS TENUISPINUS (Sars) 
Chiridius tenuispinus Sars, Norwegian North Polar Expedition, vol. 5, Crustacea, 
p. 67, pl. 18, 1900. 
Gaidius tenwispinus Sars, Rés. camp. sci. Albert de Monaco, No. 69, p. 46, 1925. 
Stations 42; 48; 2195; 3799; 4926; 5030; 5297; 5231; 5246; 5320; Yes 
Bay, Alaska. Identified by Sars from five Monaco stations and pres- 
