106 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loi 



Family ANTHURIDAE 



The family Anthuridae has been previously known from the west 

 coast of North America by a single species, Edanthura linearis Boone. 

 I herein consider the genus Edanthura (type, E. linearis) as a synonym 

 of Paranthura and E. linearis as a nomen nudum. The genera 

 Golanthura and Cyathura are apparently new to the Pacific coast fauna 

 of North America. The three genera concerned differ so widely from 

 one another that their identification is relatively simple, as is 

 illustrated in the following key : 



KEY TO THE KNOWN NORTHERN CALIFORNIAN GENERA OF THE FAMILY 



ANTHURIDAE 



a\ Free portion of maxilliped consisting of a single article ; mandibular palp 



lacking ; only 6 pairs of peraeopods present Golanthura 



a^ Free portion of maxilliped consisting of 2 or 3 articles ; mandibular palp 

 present ; 7 pairs of peraeopods present in adults. 

 &\ Maxilliped with 2 free articles ; mandibular incisor lacking chitinized 



teeth ; mouth parts adapted for piercing and sucking Paranthura 



6'. Maxilliped with 3 free articles ; mandibular incisor with chitinized teeth ; 

 mouth parts adapted for chewing Cyathura 



Genus PARANTHURA Bate and Westwood, 1868 



In addition to the synonyms listed by Dr. Barnard in his revision of 

 the family (1925, p. 152) , another genus, Edanthura Boone, 1923 (type, 

 E. linearis Boone, 1923, nomen nudum), should be considered as a 

 synonym of Paranthura. 



PARANTHURA ELEGANS, new species 

 FlGUEES &-11 



Holotype. — Female, length 9.1 mm., width at widest part of second 

 peraeon somite 0.8 mm. 



Allotype. — Male, length 9.0 mm., width 0.5 mm. 



Diagnosis. — Cephalon anterolateral angles very slightly exceeding 

 rostral forward extent. Eyes large, composed of about 13 ocelli. 

 Endopod of uropod extending beyond telson; exopod shorter than 

 telson and with a slightly sinuate posterolateral border. Tip of stylus 

 of second male pleopod with four setae and marginal cylindroid lobe. 

 Posterolateral pleotelson borders finely dentate. Maxilliped with two 

 free articles. 



Character of hody. — Length exceeding nine times the width. Dull 

 yellow in color with a few scattered dark-brown chromatophores. 



Cephalon. — Rostral projection not exceeding forward extent of an- 

 terolateral angles. Eyes with about 13 ocelli. Ocular lobe with 

 pointed apex as seen from lateral view. 



Peraeon. — Second somite slightly longer than first and with a dorsal 

 anterior depression for the reception of the posterior border of first 

 somite. Third somite similar to second but shorter and wider. 



