Manchester Memoirs, Vol. xlv. (1901), No. 14. 



" thus has arisen the great, and still well-marked, similarity 

 " of the two faunas." -- 



In his revision of the EchiiiridcB, Shipley ('99. p. 355) 

 gives a list of the species belonging to the genus Echiurus, 

 showing their geographical distribution. In all, there are 

 four species : — 



Punta Arenas. 

 Straits of Magellan. 

 Off the coast of Greenland. 

 North Sea, N. Atlantic, and 

 English Channel (in soft sand, 

 mud, or clay). 

 Japanese waters (in the mud 

 near the shore). 

 Shipley says " It is thus evident that this genus is a 

 " denizen of the colder seas, and reaches from the Arctic 

 "to the cooler waters of the temperate regions of both 

 " hemispheres." 



Fischer (^'96, p. 7) has drawn up a table showing a 

 comparison of sub-antarctic American Gephyrea with allied 

 arctic forms, from which the following is derived: 



Echmriis chilensis. 



„ forcipatiis. 

 „ pallasii. 



unicinctiis. 



Antarctic. 

 Phascolosoma tnargariiaceuni, 

 Sars. 

 var. antarcticmn, Mich. 



South Georgia. 

 ,, ficscu/ii, Mich. 



South Georgia. 

 ,, georgianum, Mich. 



South Georgia. 

 ,, capsi/orine, Baird. 



Falkland Islands, Sts. 

 of Magellan, Tierra 

 del Fuego, Picton 

 Isl. 



Arctic. 

 I . * Phascolosoma margarita 

 ceiim, Sars. 



Greenland (?) North 

 America, Spitz- 

 bergen, Norway, 

 North Sea. 

 var. papillosum., Thomps. 

 Ireland. 



