HYDROCOKALS OF THE KORTH PACIFIC — FISHER 519 



Female ampullae (pi. 42, fig. 2a; pi. 56, fig. 1): The convex surface 

 is thrown into rather sharp uneven ridges, or into irregular short 

 tubercles, or both. Sonietiraos the ridges radiate irregularly from 

 summit of convexity. Here and there are abruptly smaller ampullae, 

 which may be seen in the photograph (also pi. 42, fig. 26), It cannot 

 be determined in the dry specimen, whether these are male ampullae 

 or undeveloped female. Male colony unknown. 



Coenosteum close-grained, hard, smooth on the main limbs, but 

 on the branches roughened by low ridges and protuberances similar 

 to those of ampullae (pi. 56, fig. 1). 



Color, pale warm pink (light grenadine pink or orange-pink of 

 Ridgway's nomenclature). 



Type—V.S.'KM. no. 43271. 



Type locality.— Station 4777, Petrel Bank, Bering Sea, lat. 52° 11' 

 N., long. 179° 49' E., 52-43 fathoms, fine gravel. 



Specimens examined. — The type. 



Remarks. — Allopora stejnegeri differs from all other species of red, 

 pink, or purplish Allopora in the character of the ampullar wall, which 

 is rugose, or ridged. The dactylotomes have clean-cut, sharp edges 

 and are of uniform width. The gastropore is narrow, fairly deep, 

 cjdindrical. 



This sharply differentiated Allopora is named in honor of Dr. 

 Leonhard Stejneger, of the United States National Museum, dean of 

 American taxonomers. 



ALLOPORA BOREOPACIFICA (Broch) 



Plate 53, Figures 3-3b; Plate 55, Figure 2; Plate 76, Figures 9-11 



iSiylaster (Allopora) boreopacificusBHOcn, Explor. des Mers d'URSS, fasc.l? (1933), 

 Inst. Hydrologique Leningrad, pp. 82, 84, figs. 1, 2, 1932; Einige Stylas- 

 teriden (Hydrokorallen) der ochotskischen und japanischen See, p. 60, 1935, 



Stylaster {Allopora) boreopacificus forma typica Broch (in part), Untereuchungen 

 an Stylasteriden, p. 56, text fig. 17a, h, 1936; figs. 17c, d, and pis. 8-10 (figs. 

 24, 25 refer to A. campTjleca paragea). 



Diagnosis. — Cyclosystems small, with usually 5 and 6 (Okhotsk 

 Sea), or 7 and 8 (Gulf of Tartary), narrow dactylotomes about as long 

 as width of gastrostome; gastropore rather narrow, sometimes slightly 

 curved, 0.8 to 0.9 mm deep, cylindrical, without a style chamber; 

 gastrostyle slender, sharp, half as long as depth of gastropore; am- 

 pullae (female) conspicuous, slightly convex superficially, about 

 twice as broad as cyclosystem; coenosteum minutely perforated, pink. 



Description. — The material does not conform absolutely to the 

 type specimen from St. Olga Bay, on the Asiatic coast at mouth of 

 Gulf of Tartary, but the deviations are no greater than may be 

 expected. Dr. Broch's material from the type locality was limited 

 to a small fragment of the original specimen, a sketch of which appears 



