282 PROCEEDINGS OF THE CALIFORNIA 



meuts spirally coiled from right to left. At the base of each branchia are two 

 slender accessory filaments not coiled, quite short, and situated, one before, and 

 the other behind, the base of the main branchia. Second pair of hands, kidney- 

 shaped, with the carpal articulation half-way between the distal and proximal 

 ends ; and having two pointed tubercles on the inferior edge, before the carpal 

 joint. Third and fourth eegmenls somewhat punctate above, all the othere 

 smooth : the sixth and seventh, siightly serrate on the upper anterior edge, and 

 without ventral spines. Color yellowish white. Loo. -70.. lat. -39 in. of 

 largest specimen. 



$ Similiar to the J in all respects, excepting in being a little more slender, 

 and in wanting the accessory appendages to the branchiaj ; the ovigerous sacs 

 are four in number, overlapping each otiier. 



Habitat, on the California Gray Whale, Rhacliianectes glaucm of Cope, on 

 the coast of California ; very numerous. This species is named in honor of 

 Capt. C. M. Scammon, U. S. Rev. Marine, well known by his studies on the 

 cetaceans. The specimens here described were collected and submitted by him 

 for description, and will be figured in his forthcoming monograph of the West 

 Coast whales. I may remark here that these species are all so distinct from 

 those figured by Milne-Edwards, Gosse, Bate and Westwood, that a compara- 

 tive description has seemed unnecessary ; also, that the species obtained on 

 different species of cetaceans have so far been found invariably distinct. The 

 inference is, of course, that each cetacean has its peculiar parasites, a supposi- 

 tion which agrees with our knowledge of the facts in many groups of terrestial 

 animals. 



Cijanius svjfusus, n. sp. Body flattened, elongate ; segments subequal, outer 

 edges widely separated. Branchia?, single, cylindrical slender, with a very short 

 papilli;brm appendage before and behind each branchia. Superior antenniB 

 unusually long and stout. First pair of hands quadrant-shaped ; second pair 

 slightly punctate, arcuate, emarginate on the inferior edge, with a pointed 

 tubercle on each side of the emargination. Third joint of the posterior legs 

 keeled above, with a prong below. Pleon extremely minute. Segments all 

 smooth. Xo ventral spines on the posterior segments. Color, yellowish white, 

 suffused with rose-purple, strongest on the antennae and branchijr. Length, 

 •41, breadth (of body) -2.5 in. All the specimens which have passed under my 

 observation, some eight or ten in number, were males. 



Habitat, on the " hump-back " whale, Megaptera versabilts, Cope, Monterey, 

 California. 



Ci/amits mysiiccti, n. sp. Body flattened, subovate, segments adjacent. 

 Branchi;e single, short, stout, pedunculated, a single papilliiorm appendage be- 

 hind each. Head short and wide. First pair of legs very small. Hands all 

 simple and smooth, fingers greatly recurved. Carpal articulation in the second 

 pair of hands, half way between the proximal and distal ends of the hand. 

 Pleon very minute. Color dark brownish yellow. Length -33 in ; breadth 

 (of body) -16 in. Two female specimens. 



Habitat, on the northern " bowhead " whale, probably Balana myslicetus, 

 Lin., near Bering Strait. 



