10 



by the writeto As the work progressed, it was obvious 

 that an increasing number of kinds of animals were being 

 recognized, partly because many animal species lie in 

 tubes or burrows made by other kinds, or are covered with 

 debris, or occupy various sheltered nooks not easily 

 seeno (Analyses were usually made with the aid of a 

 dissecting raicroscopeo) Such was the case with many 

 small tubicolous animals, Monobrachium , a commensal 

 hydroid on small bivalves, an unknown f labelligeriid 

 found in considerable numbers in dead shells of Cadulus 

 (tooth shell), commensal and parasitic animals associated 

 with host species, and other kinds. In time, therefore, 

 it may be necessary to review all of the earlier samples. 

 This can still be done since most have been preserved. 

 Fojptunately, experiences gained from similar studies 

 in the San Pedro area, where many animals are the same, 

 made the recognition of most species simplero 



Emphasis on the importance of annelids from the 

 start might have bee^ due to interests on the part of the 

 investigator. However, it is believed that this group 

 will loom the largest in mass productivity and diversity 

 to anyone who will examine the samples, and that they, 

 together with the ophiuroids and the smaller though poorly 

 known entomostracans, are the most important constituents 

 in the bottoms investigated. 



