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University of California PubJicatious in Zoology [Vol. 18 



example is Harmothoe forcipata. This species has been fouud near 

 Eno-Sima, off the coast of Japan, in depths of 100 to 250 fathoms. 

 Individuals of the same species, however, have been found near the 

 southern coast of California in various depths from 448 to 600 fathoms. 

 The cosmopolitan species, Lepidonotus squamatus, is an exception. 

 The species is known as a littoral form in various parts of the world. 

 On this coast, however, the species inhabits a depth of 90 to 100 

 fathoms. Only in one ease has that species been found at a depth of 

 12 to 15 fathoms. 



* In table 5 an attempt has been made to enumerate all the species of Polynoidae known 

 on the Pacific coast in relation to the localities, depths and temperatures in which each species 

 is known to occur. The data regarding the temperature are not exact but in most cases 

 an approximate estimation of the possible temperature has been made by Dr. G. McEwen and 

 a considerable difference has been allowed for seasonal variation. 



t* Temperatures printed in bold face represent actual observations. The other tempera- 

 tures were computed by Dr. G. P. McEwen and are entered to give a general idea of the 

 temperature at the corresponding depths. 



