NORTH ATLANTIC PLANKTON, ETC. 89 



Some of the above-named animals from Puget Sound 

 are common British species, and others are closely 

 related or representative forms. I noted the presence of 

 Starfishes very closely resembling our North Atlantic 

 Cribrella sangu-inolenta, Stichaster roseus, and Solaster 

 endeca ; while Mr. A. 0. Walker, who is examining the 

 higher Crustacea, writes to me : — " The Pandalus, which 

 is P. dance, St., only differs from our common P. montagui 

 in having one more tooth on the lower side of the rostrum, 

 and two small teeth at its extremity instead of one ; and 

 Crangon nigricanda, St., is so very near our common 

 Shrimp, that I do not think it ought to have been 

 separated. Then there is a Hippolyte very like our H. 

 pusiola, Kr., and another like our II. spinus, and so on. 

 The Idotea is certainly I. exsecata, St., it represents our 

 I. linearis." 



This close resemblance between our common British 

 species and some of the animals from this arm of the 

 Pacific, a third of the way round the world, is most 

 interesting. There are also, however, some very charac- 

 teristic forms, such as the huge Holothurians and the 

 magnificent Cryptochitons. 



Explanation of Plates. 



Plate V., Eitrytemora Jierdmani, n. sp. 



Fig. 1, female, dorsal view, X 35 ; fig. 2, anterior 

 antenna, female, X 75 ; fig. 3, posterior antenna, X 95 ; 

 fig. 4, mandible and palp, X 85 ; fig. 5, posterior foot 

 jaw T , X 125 ; fig. 6, foot of first pair, X 255 ; fig. 7, foot 

 of fourth pair, X 255 ; fig. 8, foot of fifth pair, female, 

 X 152 ; fig. 9, anterior antenna, male, X 75 ; fig. 10, 

 fifth pair of feet, male, X 100; fig. 11, abdomen and 

 caudal stylets, male, X 10. 



