202 IOWA STUDIES IN NATURAL HISTORY 
away in the hold not to reappear until we reached our wharf at 
Auckland. 
Only a few Crustacea were secured and these not of unusual 
interest except perhaps to the specialist. A small grapsoid erab 
from Rakino Island is diffusely mottled with scarlet over a yellow- 
ish background and the legs are obscurely banded with scarlet. 
Larger specimens, probably of the same species, have the carapace 
searlet and spotted with white, and the distal parts of the legs are 
white underneath and scarlet, sharply barred with white, above. 
These pretty crabs are very common at Rakino and a number of 
specimens were secured. 
Another form from the same place was bluish gray in color and 
the carapace of peculiar shape, orbicular in general outline, its 
surface with obscure squarish flat elevations and the lateral mar- 
gins compressed into a thin plate-like ridge which ended rather 
abruptly somewhere back of the middle. The legs, and particular- 
ly the under surface, or rather, the reflexed abdomen, were quite 
hairy in the single female specimen obtained. 
A peculiar form came from a depth of about 18 fathoms off 
Cape Colville. It was quite spiny and hairy with the legs ending 
in sharp curved claws. It bore a small hydroid colony attached 
near the bifurcated rostrum and in general resembled Hurynome 
as figured by Miss Rathbun in her ‘‘Crustacea from the North 
Pacific Exploring Expedition,’’ Pl. IV, Fig. 2. Other spider-like 
crabs related to this were taken from sponges, a great number of 
which came up in the trawl, and a very small reddish anomuran 
bearing ova was also taken off Cape Colville. 
The Mollusca were well represented in many of the hauls. Large 
areas of the bottom at depths of eighteen to twenty-four fathoms 
near Cape Colville were evidently covered thickly with shells, 
mostly dead ones of a fine Pecten bearing a superficial resemblance 
to our P. irradians or scallop, having the same beautiful sculptur- 
ing in the form of regularly spaced grooves extending from the 
hinge-line to the ventral margin, alternating with low, rounded 
ribs. Some specimens were about five inches in diameter. On the 
inside of the valves the ridges were angulated, not rounded, re- 
sembling thick straps which were narrower than the intervening 
furrows. Fresh specimens were pinkish on the outside and ivory 
white on the inside. 
But these Pectens, although interesting in themselves, were of 
prime importance to the zoologist from the fact that they fur- 
