COPEPODS OF THE WOODS HOLE KEGION 279 



reaching nearly to the tip of the distal segment, its inner expansion 

 with four setae, placed some distance apart. The distal segment is 

 twice as long as wide and pointed at its tip, with one apical filiform 

 seta, quite elongate, one inner and three outer plumose setae, the last 

 four very short and weak. Total length, 0.6-0.75 mm. 



MaJe. — A little smaller than the female, and more cylindrical, 

 especially the urosome. In the first legs the exopod has but two seg- 

 ments, the distal one longer than the proximal and armed with two 

 setae and three spines; the second endopod segment carries an outer 

 spine, the terminal claw is scarcely longer than the second segment. 

 The second, third, and fourth endopods are more slender than those 

 of the female, but the exopods are stouter, and their distal segment 

 in all three pairs is turned inward nearly at right angles and armed 

 with five long coarse spines. The outer spine of the middle segment 

 of the third exopod is the same diameter throughout and is notched 

 near its tip. None of the endopods show any of the usual sexual 

 modifications found in this genus. The fifth legs are reduced to a 

 narrow lamina, at whose outer end is the regular outer process of 

 the basal segment, but the rest of the lamina shows no distinction of 

 parts, being raised into four lobes, each tipped with a seta, the inner 

 one shorter than the other three. Total length, 0.55-0.65 mm. 



Remarks. — This species can be recognized by the two setae close 

 together at the center of the outer margin of each caudal ramus, and 

 by the details of the first and fifth legs. It is usually covered with 

 small particles of debris, which cling to the hairs of the appendages 

 and are difficult to remove. 



LAOPHONTE HORRIDA Norman 



FiGtJBE 173 



Laophonte horrida Norman, Proc. Roy. Soc. London, vol. 25, no. 173, p. 206, 

 1876.— Sars, Crustacea of Norway, vol. 5, p. 246, pis. 166, 167, 1908. 



Ocourrence. — A single female was captured by C. H. Blake in a 

 surface tow from the Bureau of Fisheries wharf at "Woods Hole, 

 August, 1925. This specimen was dissected and mounted by Mr. 

 Blake, who kindly allowed the present author to examine the mount 

 and to include the species here as belonging to the Woods Hole area. 



Distribution. — British Isles (Norman, Brady) ; Greenland (Buch- 

 holz) ; Franz Josef Land (T. Scott) ; Polar islands (second Fram 

 expedition); coast of Norway (Sars); Spitzbergen (T. Scott). 



Color. — Dark yellowish brown, nearly uniform in shade and with- 

 out pigment markings; eye a dull red or reddish brown. 



Female. — Body segments separated by deep constrictions, the 

 posterior corners of each segment angularly produced sidewise and 

 backward; cephalic segment subquadrangular, the dorsal surface 



