FAUNA OF PENIKESE ISLAND, 1923. 



(EDITED BY R. E. COKER.) 



INTRODUCTION. 



On the occasion of the fiftieth anniversary of the founding of 

 the Agassiz laboratory on Penikese, a biological reconnaissance of 

 the island was undertaken jointly by botanists and zoologists 

 from the Marine Biological Laboratory and the Fisheries Bio- 

 logical Station of the United States Bureau of Fisheries at Woods 

 Hole, Mass. The studies of the flora have been published under 

 the editorship of Professor I. F. Lewis in Rhodora, Vol. 26, Nos. 

 310, 311 and 312, 1924. The zoological collections and studies 

 were made by the workers to be named hereafter, while the 

 arrangement of the report for publication has been entrusted to 

 the present editor. 



With regard to the fauna, as well as to the flora, the collections 

 were made by large parties, but chiefly on one day in each case. 

 Practical considerations made it necessary for the zoologists to 

 restrict attention to the larger animals existing above the tide 

 line, that is to say, to the non-microscopic animals living on the 

 land or in the small freshwater and brackish ponds that are 

 described by Miss Shaw in the report on Flora. Notwithstanding 

 the number of collectors and the varied interests and experiences 

 represented by them, the time spent on Penikese imposed an 

 obvious limit to the exhaustiveness of the collections, especially 

 since the fauna of the island is comprised largely in the group of 

 Arthropods, so many of which are seasonal in appearance. 



In the following list are the names of the persons comprising 

 the zoological collecting expedition to Penikese Island, August 7, 

 1923, with the names of the respective institutions with which 

 they were permanently engaged. The abbreviation "M.B.L." 

 for Marine Biological Laboratory or "U.S.F.L." for United 

 States Fisheries Laboratory, is used to denote the local laboratory 

 to which each was temporarily attached during the summer 

 of 1923. 



