1910.] NATURAL SCIENCES OF PHILADELPHIA. 375 



No color. Much affected with attached parasites which are often 

 arranged with remarkable symmetry on the dorsal side. 



Station 4,557, Monterey Bay, off Point Pinos Light-house, 28-40 

 fathoms, rocky. 



In general appearance this species resembles Aphrodita (Lcetmonice) 

 aphroditiodes (Mcintosh) but the seta' differ and the palpi are much 

 stouter. The most striking characteristics are the formidable rows of 

 long, stout, lustrous, brown spines which posteriorly meet over the 

 back, and the entire absence of brilliantly iridescent lateral fringes. 



Aphrodita japonica v. Marenzeller. 



Aphrodita japanica v. Marenzeller, Denks. K. Akad. Wissensch., Wien, 

 XLI (1879), pp. Ill and 112. 



This species has been reported already 3 from the dredgings of the 

 -'Albatross" as occurring on our coasts from the Gulf of Georgia to 

 Alaska. The Academy of Natural Sciences possesses two very large 

 and bulky specimens nearly seven inches long collected by Professor 

 Harold Heath in 12 fathoms at Pacific Grove, Monterey Bay, in 1897. 

 Professor Treadwell's remarks on the notopodial setae render it prob- 

 able that the species reported from Hawaiian waters 4 as A. echidna is 

 really this species. 



Aphrodita japonica occurs plentifully at numerous stations scattered 

 over the whole range of these investigations, the largest number 

 (twelve) being taken at station 4,436. The specimens vary from 28 

 mm. (sta. 4,322) to 155 mm. long and 70 mm. in extreme width between 

 tips of neuropodial spines (sta. 4,457). The seta? and other characters 

 agree exactly with the northern examples. The neuropodials increase 

 in number with age and the densely hairy tips of the young become 

 worn quite smooth on old .specimens. A characteristic of the species 

 — distinguishing it from related species with elongated hooked noto- 

 podial setae — is the slender, rather long, tapered median tentacular 

 style. This character, however, must be used with caution as the 

 style is sometimes lost or broken and in this condition may resemble 

 the short, clavate tentacles of other species. Marenzeller gives a good 

 figure. The lateral fringes are dull reddish but detached tufts of the 

 dorsal felt often exhibit a dull green color. 



Stations 4,322, off Point La Jolla, vicinity of San Diego, 110-199 

 fathoms, green mud and shells; 4,325, same locality, 191-292 fathoms, 

 green mud and fine sand; 4,334, off Point Loma Light, vicinity of 



3 Proc. Acad. Nat. Sci., 1908, p. 338. 



i Bull. U. S. Bureau of Fisheries, 1903, p. 1,157. 



