402 PROCEEDINGS OF THE NATIONAL MUSEUM vol. 99 



Herrmannella rostrata Pelseneeb, 1929, p. 43. — Fbaseu, 1932, p. 279 (Morecambe 

 Bay; nettings of plankton over beds of Cardinm cdule Linnaeus). 



Paranthessius rostratus Monod and Dollfus, 1032, pp. 147-148, 194-195. — 

 Atkins, 1934, p. 674 (Plymouth).— Leigh-Shabpe, 1935, pp. 47-i8 (Ply- 

 mouth; hosts: Cardinm cdule Linnaeus, Chlamys opcrcularis [Linnaeus], 

 Paphia pullastra [Montagu]). 



PARANTHESSIUS SERENDIBICUS (Thompson and Scott, 1903) 



Hermannella serendibica Thompson and Scott, 1903, pp. 282-283, pi. 17, figs. 9-11 

 (Gulf of Manaar, Ceylon ; vrasbings of sponges). 



PARANTHESSIUS TENUICAUDIS (Sars, 1918) 



Hermanella termicaudis Sabs, 1918, pp. 180-181, pi. 102 (west coast of Norway). 



PARANTHESSIUS VALIDUS (Sars, 1918) 



Hermannella valida Sabs, 1918, pp. 175-176, pi. 98 (Stavanger Fjord, Norway; 

 among dredged material from about 50 fathoms). 



PARANTHESSIUS COLUMBIAE (Thompson, 1897) 

 FlGtTBES 33, 34 



Psendolichomolgus colu7nl)iac Thompson, in Herdman, Thompson, and Scott, 

 1897, pp. 87-88, pi. 8, figs. 1-10 (Puget Sound ; plankton). 



Specimens examined. — One lot of specimens from several examples 

 of Schizothaerus nuttalUi (Conrad) , collected at Tomales Bay, Marin 

 County, Calif., May 23, 1943, by P. L. Illg. Eleven adult females, 6 

 adult males, 50 immature specimens. (Selected specimens constitute 

 U. S. N. M. No. 85348.) 



Washings (formalin in sea water) of the red algal tuft on the siphon 

 plates of an example of Schizothaerus nuttallii (Conrad), Tomales 

 Bay, Marin County, Calif., May 23, 1943, P. L. Illg. One male of the 

 fifth copepodid stadium. The alga was collected during the period of 

 outgoing tide and was awash in several inches of water. 



From one specimen of several examples of Protothaca tenerrlma 

 (Carpenter), Tomales Bay, Marin County, Calif., May 23, 1943, P. L. 

 Illg, collector. Two adult females. 



From several examples of Schizothaerus nuttallii (Conrad), Bodega 

 Lagoon, Sonoma County, Calif., January 23, 1944. Collector K. A. 

 Hok. Six adult females, five adult males, three immature specimens. 



It is probably significant that every adult specimen of S. nuttallii 

 examined on both the recorded occasions yielded examples of the 

 copepod. 



Distribution. — Puget Sound ; Tomales Bay and Bodega Bay, Calif. 



Description. — Female: The body is elongated and slender; the 

 habit is unique among the members of the genus (fig. 33, A). The 



