160 PROCEEDINGS OF THE NATIONAL MUSEUM vol. in 



range southward at least into coastal waters of northern New England 

 and probably throughout the Gulf of Maine. These included two 

 species of the genus fAmpUporeia, A. lavyrenciana Shoemaker (1929, 

 1930) and A. virginiana Shoemaker (1933), as well as Bathyporeia 

 quoddyensis Shoemaker (1941) and Priscillina armata (Boeck) 1861. 

 Povtoporeia affinis Lindstrom 1875, commonly encountered in arctic 

 and subarctic intertidal and estuarine localities of eastern Canada 

 (Dunbar, 1954; Bousfield, (1956a) and also known from fresh-water 

 Lake Chamberlain in northern Maine (Bousfield, 1958a), less probably 

 occurs m New England coastal marine waters. Doubtfully occurrmg 

 in the region is the puzzling Lepidactylus dytiscus Say 1818, origmally 

 described from the coast of Georgia, and Hamtoriiis americanus 

 Pearse 1908, collected at Cameron, La., but not recorded elsewhere. 

 North American species of the genus Eohamtorius Barnard 1957 

 apparently are restricted to the North PacL^c region, and species of 

 the cold-temperate genus Urothoe have not been recorded from the 

 western Atlantic, although well known from the European and 

 African coasts. Thus, the previously known or probable haustoriid 

 fauna of New England consisted of less than a dozen species in five or 

 six genera. 



As a sequel to the studies on Haustorius in eastern Canada (Bous- 

 field, 1962b), the writer exammed considerable material of this genus 

 from the New England coast, particularly from localities ui the Cape 

 Cod region. Much of the material was collected durmg the past 

 five or six years, particularly during the period June-September 1963; 

 the remainder consisted of the original study material of S. I. Smith, 

 Samuel Holmes, C. R. Shoemaker, and then- associates, now stored 

 at the Yale Peabody Museum, the Harvard Museum of Comparative 

 Zoology, and the United States National Museum in Washington. 

 A number of distinct types have been discovered, the diversity of 

 which is believed sufficient for new generic as well as new specific 

 recognition. The afiinities of these new taxa provide the basis for 

 subfamily differentiation within the heterogeneous complex of the 

 Haustoriidae. This study, therefore, is an attempt to combine the 

 previous information with the present findings, to redefine the family 

 Haustoriidae and the type genus Haustorius, and to propose a new 

 phylogenetic concept within the systematic unit. 



Herewith, newly described, are the subfamilies Pontoporeiinae and 

 Haustoriinae, the genera Protohaustorius, Parahaustorius, Neohau- 

 storim, Pseudohaustorius , and Acanthohaustorius, and the species Proto- 

 haustorius deichmannae and P. wigleyi, Parahaustorius longimerus, 

 P. holmesi, and P. attenuatus, Neohaustorius biarticulatus and A''. 

 schmitzi, Pseudohaustorius caroliniensis and P. borealis, and Acantho- 

 haustorius millsi, A. intermedius and A. shoemakeri. Haustorius 



