SUBTERRANEAN AMPHIPOD STYGONECTES 15 



for lending me a type-series from the Yale Peabody Museum of 

 Natural History. Mrs. Laura J. Marsh was kind enough to read parts 

 of the manuscript and make several valuable suggestions. 



The field work specifically relating to this project was ably assisted 

 by a number of fellow speleologists. Russell M. Norton and Stewart 

 B. Peck were especially helpful during the extensive field trip of June 

 1964. Others who have assisted me on field trips are John Arbuckle, 

 Wilham CHne, Lyle G. Conrad, John E. Cooper, Bonnie and Gregg 

 Marland, Charles Maus, Andrew Pizzini, James R. Reddell, and 

 John Stellmack. Lang Brod, James Schermerhorn, and Jerry Vine- 

 yard were extremely helpful in making available location data for 

 caves in the Ozarks. Several biologists collected and donated material 

 from caves in their particular geograpliic area and their contributions 

 are appreciated: James Reddell and other members of the Texas 

 Speleological Survey, including, especially, David McKenzie and 

 Wilham H . Russell, collected numerous amphipods from Texas caves; 

 Francis G. Howarth and Frederick D. Stone collected several series 

 from New York caves; Richard Franz made collections from a Mary- 

 land cave; and Dick Martin collected from several Arkansas caves. 



I would like also to extend my gratitude to owners and/or managers 

 of the following commercial caves who granted me permission to 

 collect on their property: Cascade Caverns and Century Caverns, 

 Tex.; Laurel Caverns, Pa.; Onyx Cave and Rowland Cave, Ark.; 

 and Organ Cave, W. Va. Finally, the willingness of many land 

 owners to allow me to collect on their property is gratefully 

 acknowledged. 



This study was supported in part by small grants from the Uni- 

 versity of Kentucky Department of Zoology and the Research 

 Advisory Committee of the National Speleological Society. A part 

 of this investigation was carried out during the tenure of a 1964 

 Summer Fellowship from the National Science Foundation. 



Systematics 



Family Gammaridae 



A comprehensive diagnosis of this family can be found in Stebbing 

 (1906), and more recently several excellent keys have been published 

 which differentiate Gammaridae from other families of Amphipoda 

 represented in North American fresh waters (cf., Shoemaker, 1942a; 

 Bousfield, 1958;Hubricht, 1959). 



