I PROCEEDINGS ON THE UNITED STATES NATIONAL MUSEUM 



issued f ^?fv vi CJ?j^i ^y 'A< 



SMITHSONIAN INSTITUTION 

 U. S. NATIONAL MUSEUM 



Vol.99 Washington: 1949 No. 3252 



REDESCRIPTION OF THE SHRIMP BATHYPALAEMONEL- 

 LA PANDALOIDES (RATHBUN), WITH REMARKS ON 

 THE FAMILY CAMPYLONOTIDAE 



By L. B. HoLTHins 



In a paper on brachyuran and macruran decapod Crustacea from the 

 Hawaiian Archipelago, Rathbun (1906) described a new species of 

 shrimp under the name Palaemon pandaloides. Kemp (1925) in his 

 key to the species of the genus Palaemon (to which he gave the name 

 Leander) inserted Rathbun's species under the name Leander panda- 

 loides without having access to specimens. Since then the species 

 has not been recorded in the literature. 



While working last year in the United States National Museum I 

 had the opportunity, through the courtesy of Dr. Fenner A. Chace, Jr., 

 curator of the division of marine invertebrates, of reexamining the 

 type specimens of Palaemon pandaloides and found that they do not 

 belong to the genus Palaemon at all, as indicated by the presence of 

 arthrobranchs at the bases of the pereiopods. They undoubtedh^ be- 

 long to the family Campylonotidae. Comparison of the specimens 

 with Balss's (1925) description of the genus Bathypalaemonella made 

 it clear that Palaemon pandaloides belongs in that genus. Rathbun's 

 specimens differ, however, in some respects from Balss's Bathypalae- 

 monella zimmeri and so have to be considered to belong to a separate 

 species. 



Inasmuch as Rathbun's description is rather short, it is thought 

 that a redescription of this interesting species will be found useful. 



831087—49 517 



