612 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.47. 



First antenae minute, only two joints visible, the terminal one 

 armed with a single small spine. Second pair large and stout, the 

 basal portion definitely two-jointed; the endopod well rounded, one- 

 jointed and armed with numerous short and sharp spines; the exo- 

 pod two-jointed and tipped with two larger and blunter spines. 

 First maxillae quite small, set well up on the mouth-tube, and tipped 

 with two short and stout spines. Second maxillae stout, quite 

 straight, and joined at the tip to a conical bulla whose length and 

 diameter are about equal to that of the arms themselves. Maxilli- 

 peds reaching the extreme tip of the mouth-tube, rather slender, 

 ending in a curved claw with a tiny spine at its base; the second joint 

 also carries on its ventral surface a short process armed with a blunt 

 spine. 



Male . — Unknown . 



Color (preserved material) a uniform brownish-white. 



Total length (without egg strings), 4.25 mm. Length of trunk. 

 2.5 mm; of arms, 3 mm.; of egg strings, 2 mm. Width of trunk, 

 1.75 mm.; of egg strings, 0.66 mm. 



(oquassa, the specific name of the host.) 



Remarks. — The above specimens were found in a collection sent 

 to the Museum by Professor Lee. They are somewhat shrunken, but 

 show immistakably that they do not belong to any known species 

 and accordingly are used as the types of a new species. 



They are most closely related to alpina and edwardsii, from which 

 they can readily be distinguished by the much greater length of the 

 maxillipeds and by the details of the second antennae. 



SALMINCOLA BICAULICULATA (Wilson). 

 Plate 31, figs. 41 and 42. 

 Lernaeopoda hicauliculata Wilson, 1908, p. 472, pi. 82. 



Host and record of specimens. — Three females were taken from the 

 tips of the gill filaments of the Dolly Varden trout, Salvelinus malma, 

 at Bering Island by Gov. N. Grebnitzky. These were made the 

 tyi^es of the species and were numbered 38594, U.S.N.M. 



Tw^o females were obtained by Dr. L. Stejneger at Bering Island in 

 1882, from an unknown host. These are Cat. No. 8453, U.S.N.M. 

 A single female was taken from a "trout" at Maple ton, Oregon, by 

 Dr. S. E. Meek in 1896, and is Cat. No. 38575, U.S.N.M. 



Remarks. — This species was fully described and figured in 1908. 

 It may be recognized by the two pedicels of the bulla, by the wide 

 separation of the bases of the egg strings, by the peculiar pattern of 

 the dorsal surface of the head, and by its attachment to the tips of 

 the gill filaments. Two figures, one of them new, are introduced 

 here for comparison. 



