522 PROCEEDINGS OF THE NATIONAL MUSEUM vol. &4 



pores. There is no sign of the numerous surface papillae characteristic 

 of californica, papillosa, and porphyra. 



Color, dried, pale warm pink (orange-pink of Ridgway's nomencla- 

 ture, becoming shrimp pink or safrano pink after treatment with 

 sodium hypochlorite). 



Ty^g.— U.S.N.M. no. 4193. 



Type locality. — Cliika Islands, Akutan Pass, Aleutian Islands (near 

 Unalaska). 



Specimens examined. — The types, 5 specimens that had been thrown 

 on beach. All are incrustations, chiefly on Mytilus shells and are 

 more or less beach- worn. The best specimen is figured (pi. 57, fig. 3). 

 Also from station 4777, 2 specimens (one on small stone, the other on 

 fine cemented gravel). 



Sucia Islands (vicinity of San Juan Islands), Wash., depth not 

 recorded; 14 small colonies, all on large water-worn pebbles (pi, 57, 

 fig. 1). 



ALLOPOHA NOBVEGICA PACIFICA (Broch) 



Plate 53, Figukes 2-26; Plate 55, Figure 1; Plate 76, Figures 3, 4 



Stylaster (Allopora) norvegicus Broch, Einige Stylasterideu (Hydrokorallen) 

 der ochotskischen und japanischen See, p. 59, fig. 2, 1935. 



Stylaster (Allopora) norvegicus forma pacifica Broch, Untereuchungen an Stylas- 

 teriden, p. 52, fig. 15, pi. 6, figs. 18, 19, 1936. 



Diagnosis. — Colonies salmon pink, rose, or white, branching more 

 or less dichotomously mostly in one plane; branches subterete, the 

 medium-sized cyclosystems rather uniformly spaced on front of 

 colony, scarce on back except at tips of branches; ampullae not form- 

 ing superficial convexities except sometimes very slight ones near ends 

 of branches. Resembling A. verrilli, but with narrower, deeper, 

 cylindrical gastropores and less superficial ampullae. 



Description. — The colony form is flabeliate with robust branches 

 of rather uniform thickness. The front of a characteristic fragment 

 is shown by plate 55, figure 1. The back of the principal branches 

 is usually nearly free from cyclosystems, but these appear at the ends 

 of the branchlets. 



The margin of the C3^clos3^stems is slightly to decidedly raised 

 above the level of coenosteum. In the Albatross specimens there are 

 3 to 9 dactylopores, usually 5 or 6. But in a count of 50 cyclosystems 

 on each of 4 colonies. Dr. Broch found 7 in 65 instances, 6 in 5, 8 in 

 42, 9 in 18, 5 in 15. His colony no. 4, having a maximum of 8 dac- 

 tylopores, corresponds more nearly with my material. The dactyl- 

 otomes are deep cut extending ventrally about one-third depth of 

 gastropore. In my specimens the radial dimension is much less than 

 in Dr. Broch's, being about half width of gastrostome, while in the 

 type material the length equals or slightly exceeds gastrostome width. 

 In tlie type material the dactylotomes are rather narrow with sub- 

 parallel sides as in hrochi; in my specimens there is considerable varia- 



