ORCHESTIA PARVISPINOSA. 167 
the rather slender appendages it resembles Parorchestia ; 
these characters however are probably directly associated 
with the terrestrial mode or life and are of little value in 
classification. 
In many points the species appears to be close to 
Orchestia platensis Kroyer, a terrestrial Amphipod which 
has been recorded from the Mediterranean, the eastern 
parts of North and South America, the Maldive Archipelago, 
from the Hawaiian Islands') and more recently from the 
Tuamotu Archipelago ®). It differs from that species in 
having no serrations on the posterior margin of the third 
pleon segment and in having lateral spinules on both 
branches of the first uropods. This is true for the female 
examined, but as stated above the male of the same size 
has no lateral spinules on the outer branch. The antennae 
are perhaps a little shorter and the palm of the second 
gnathopod in the male rather more oblique, but these are 
characters that are liable to variation with age. 
In both the specimens from Kali Tountang (Nes 3144 
and 3145) the pigment of the eyes is abnormally arranged. 
In N° 3144 it forms two oval patches with irregular 
margins extending along the dorsal surface of the head 
from the normal position of the eyes nearly to the posterior 
margin where the two patches converge and nearly meet. 
In N°. 3145 the pigment forms an irregular V-shape in 
the same position, the arms of the V being much narrower 
than the corresponding parts in N°. 3144. In both cases 
the ocelli are in the normal position but are mostly without 
pigment. The abnormal arrangement of the pigment in 
these specimens is probably due to some accident or injury, 
but as it is present in the two specimens collected at this 
locality under the same circumstances and not in any of the 
others, I have thought it worthy of being mentioned. 
1) Stebbing, Das Tierreich, Lief. 21, Amphipoda, p. 540 and Fauna Hawaiiensis, 
p. 527, pl. 21 A. 
2) Chevreux, Mém. Soc. Zool. France, vol. 20, p. 494, fig. 14, 1908. 
Notes from the Leyden Museum, Vol. XXXIV. 
