520 PROCEEDIKGS OF THE NATIONAL JIUSEUM vol.84 



in Broch, 1932 (fig. 1). This shows a colony 120 mm high, somewhat 

 flabeHate in form, with heavy trunk and main branches, and numerous 

 branchlets, some of which are in one general plane while others are in 

 different planes. The Albatross material (190G) consists of small 

 clusters of branchlets and twig ends evidently broken from a large 

 colony (pi. 55, fig. 2). 



Cyclosystems of branclilets very small, and frequently asymmetrical 

 or incomplete, as shown in plate 53, figure 3a. These may have the 

 lower rim of cj^closystem slightly raised w^hile upper margin, v/ith 

 incomplete or suppressed dactylopores, is flush with general surface. 

 Symmetrical systems have the rims raised about as much as in 

 'pacijica. Dactylotomes 1 to 9, most commonly 5 and 6, propor- 

 tionately about as deep as in pacifica but distinctly narrow, while the 

 whole cyclosystem is smaller. Plate 53, figure 2, represents an 

 average cyclosystem of pacijica (0.8 mm). Dr. Broch records cyclo- 

 system diameter of pacijica as high as 1.3 mm. Dactylostyle very 

 poorly developed, much less so than in pacijica. Gastropore narrow, 

 rather deep, sometimes slightly curved, or its axis oblique rather 

 than at right angles to surface, of about the same shape as in pacifica 

 and without a differentiated style chamber at the bottom. The pore 

 is thus nearly cylindrical and does not widen conspicuously at gas- 

 trostome. Style slender, its length about half depth of gastropore; 

 the latter is slightly deeper than in the type. The styles vary some- 

 what but are never robust as in typical jmcijica. Diameter of cyclo- 

 system 0.5 to 0.75 mm; depth of gastropore 0.9 mm; length of 

 gastrostyle 0.4 to 0.5 mm. 



In a male specimen certain of the cyclosystems have only 1, 2, or 

 3 dactylotomes. 



Amipullae (female) low-convex, nearly or quite twice as broad as 

 adjacent cyclosystems, among which thej^ may be as thickly placed 

 as the space will permit. The surface is smooth. Diameter outside 

 1.0 to 1.2 mm; of cavity 0.9 to 1.0 mm; height of cavity 0.6 mm; 

 convex roof 0.15 to 0.25 mm thick. 



In contrast to pacijica the surface of coenosteurn is not lustrous and 

 is microscopically perforated, the perforations in the form of inter- 

 rupted, very irregular, often branched slits narrower than the inter- 

 vening trabeculae. 



Color of dried colony: Pale pink; bright rose (Broch). 



Type locality. — St. Olga Bay, northeast of Vladivostok, mouth of 

 Gidf of Tartary, 100 meters, small stones. 



Specimens examined. — Okhotsk Sea (stations 5016 and 5017) 

 numerous fragments. The bottom temperature of 29.8° F. is note- 

 worthy. Twenty-three stations in the southern part of Okhotsk Sea 

 made by the Albatross (1906) in 52 to 192 fathoms gave bottom 

 readings of 29.8° to 32.1° F. 



