416 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. xxxm. 



length, the terminal joint of the exopod tipped with five, that of the 

 endopod with three, curved spines or claws. 



Third pair with a large basal joint, carrying at its outer distal 

 corner a spiny pad and two boot-shaped rami, indistinctly two- 

 jointed, the exopod armed with a single spine on the basal joint and a 

 group of five or six large curved spines or claws at the tip of the 

 terminal joint. Fourth legs also with a swollen basal joint and two 

 boot-shaped rami, the endopod without spines, the exopod with one 

 spine on the basal joint, and a group of four on the tip of the terminal 

 joint larger than those on the third legs and curved. No legs visible 

 on the genital segment. 



Total length, 8.5 mm.; length of carapace on mid-line, 3 mm.; 

 width of same, 4.2 mm.; length of dorsal plates of second segment, 

 2.1 mm.; of third segment, 0.8 mm.; of fourth segment, 1.2 mm.; of 

 sixth segment plate, 1.4 to 1.8 mm. ; egg-strings unknown. 



Color a dark reddish yellow marked with a chocolate-brown blotch 

 covering the center of the carapace, having a light spot on either side 

 of the mid-line in the region of the eyes. There are similar chocolate- 

 brown blotches on each of the dorsal plates, including the sixth seg- 

 ment plate, leaving the margins and angles reddish yellow. In some 

 specimens the pigment is so dense and covers so much of the body 

 that the copepod seems nearly black. The "opaque, dirty white or 

 yellowish white" specimens spoken of by Dana were evidently 

 immature, and their pigment had not yet been formed. 



(satyrus, a satyr.) 



The U. S. National Museum collection includes a single lot of fifteen 

 females of this species. Cat. No. 32753, U.S.N.M., taken from the 

 sides and pectoral fins of a blue shark, Prionace glauca, by the Fish- 

 eries steamer J.Z6a^ross during the Hawaiian explorations in 1902. 



These agree in every particular with the figures and description 

 given by Dana, except that the third pair of dorsal thorax plates in 

 his specimens were relatively shorter. But this is a difference that is 

 likely to occur in any species, and is not therefore of any value. 

 Pandarus zygsense has been given above as a synonym of the present 

 species after a careful examination and comparison of the two. 

 There are two females of P. zygsense in the National Museum collection 

 which were obtained by exchange from G. S. Brady, the author of 

 the species. They are Cat. No. 6857, U.S.N.M., and were taken on 

 Sphyrna zygxna at St. Vincent, Cape Verde Islands. Brady's descrip- 

 tion of tliis species in the Challenger Expedition Report" is very 

 short and says nothing whatever of the appendages. Nor is any 

 hint of the latter given in the single figure he published, which he 

 labeled "An adult male, seen from above." He certainly mistook 

 the sex, for his figure and description are those of a female without 



a Vol. VIII, p. 134, pi. LV, fig. 3. 



