136 Transactions of the Royal Canadian Institute 



Second maxilla much the same as in 5. fahricii, the protopodites being 

 somewhat higher and the exopodite more slender with the anterior end 

 somewhat rounded. 



First and second maxillipedes like those ia S. fabricii. 



Third maxillipede bears small hooked epipodite but no exopodite. 

 The first segment is about equal to the third in length; it is slightly 

 hollowed out laterally at the proximal end. The second segment is one- 

 quarter the length of the third and bears a distal ring of setae. Distally 

 the third segment has, in two specimens ten spines, in one nine spines, 

 and in another nine spines on the left maxillipede and eight on the right. 

 Of these spines the proximal two are small. There are about ten circles 

 of setae on the third segment. The length is about 1 1 mm. 



The first pereiopod has an epidodite. End is chelate. Dactyl cleft 

 at end and one-quarter length of merus; bears distal groups of setae. 

 Propodus stout and three-quarters of the length of the merus; bears 

 scattered setae. Carpus two-fifths length of merus and with setae on a Y- 

 shaped area on lateral side. Merus stout, proximo-laterally bears five 

 strong setae. Ischium, basis, and coxa each one-third length of merus. 

 Length 10 mm. 



Second pereiopod with an epipodite, chelate, with dactyl one-sixth 

 length of merus and having a terminal group of setae, with propodus 

 stout and two-fifths length of merus. Carpus slender, seven jointed; 

 third joint longest, equaling first and second together; first, second, fourth 

 and seventh equal; and the fifth and sixth shorter than these. Merus 

 slender, with few setae. Ischium slender, one and one-quarter times the 

 length of the merus, bearing five proximo-lateral spines. Basis one-ninth 

 length of merus. Coxa one-quarter length of merus. Length 13 mm. 



Third pereiopod bears an epipodite. Dactyl stout, curved, one-fifth 

 the length of the merus, bears six (three specimens) or five (two speci- 

 mens) spines which increase in size distally. Propodus one and one- 

 quarter times length of merus; bears about seventeen pairs of spines, the 

 distal ones being the largest. Carpus one-third length of merus; distal 

 lobe which projects over propodus well developed; Merus stout; bears 

 five spines (three specimens) or four (two specimens) on the distal half, 

 the distal one being the largest and the proximal one the smallest. 

 Ischium is stout, one-third length of merus. Coxa one-twelfth length 

 merus; posterior end deeply indented. Basis one-eighth of length of 

 merus. Length 15 mm. 



Fourth pereiopod much the same as the third but lacks epipodite. 

 Propodus with twelve pairs of spines. Merus with two spines in two 

 specimens, five in two others and six in the remaining one. Length 

 15 mm. 



