A. E. Yerrill — Additions to the Fauna of the Bermudas. 21 



it is dull yellowish green or dark olive-green, but nearly always there 

 is a pale median dorsal stripe of light gray or whitish, and usually a 

 similar, but less distinct, stripe on each side. Frequently there are 

 three pairs of blackish spots ; one pair on the thorax, one on the first 

 abdominal segment, and another at the base of the telson. 



It was not uncommon, swimming near the bottom, in shallow water 

 at Hungry Bay and at Long Bird Island. It was also found in cavi- 

 ties in loose stones, below low-tide. Clusters of its eggs were found 

 in such cavities, April 19th; they were greenish yellow and resemble 

 those of G. chiragra, which were found at the same time. This 

 species resembles the latter in form and appearance, but it is usually 

 larger and swims more freety, so that most of our specimens were 

 taken with a hand-net, while swimming. It was not taken by our 

 party in 1898, for lack of information as to its habits. 



It can be distinguished at once from G. chiragra by its lacking 

 the bulbous enlargement of the chelipeds. 



It has been recorded from various parts of the Indo-Pacific region, 

 including the Hawaiian Is., and also from the West Indies. 



ARTHROSTRACA. 



Cyamus fascicularis V., sp. nov. Sperm -whale Louse. 



Plate VIII. Figure 4. 



Specimens of a slender-bodied Cyamus, which is probably a new 

 species, were taken from the body of a young sperm whale, taken 

 off Bermuda and brought to St. George's for exhibition, in April. 



This species is much more slender than those of the right whales 

 and allied cetaceans. The two branchial segments are about as 

 wide as the following ones, and bear fascicles of small, short, some- 

 what unequal branchia?, scarcely longer than the segments. There 

 are about 10 to 12 branchial filaments in each of the four groups. 



The first segment is consolidated with the 'head, which is narrow 

 and rather long, with conspicuous eyes. Antenna? are about f the 

 length of the head. First pair of legs small, beneath the second. 

 The hands of the second pair are not much swollen, and have two 

 strong denticles, besides a similar one at the distal angle of the 

 carpus. The three posterior feet have a recurved denticle on the disl ;i 1 

 angle of the carpus. 



Color, yellowish white ; branchiae have small black spots. The 

 specimens described are females. No males were taken. 



Length of body and head, 9 ,mn ; greatest breadth of body, 3.5 mi ". 



