484 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 45. 



DENDRODOA SUBPEDUNCULATA Ritter. 



Dendrodoa subpediincidata Ritter, 1899, p. 514, figs. 6-8. — Hartmeyer, 1903> 

 p. 245 ; 1909a, p. 1362. 



Wkile my later study of the Dendrodoas has strengthened my 

 conviction of the distinctness of D. tuberculata as a species, such has 

 hardly been the result with regard to suhpedunculata. Indeed, I am 

 dubious about retaining the species since I am now obliged to rely 

 on superficial characters entirely for separating it from tuberculata. 

 The characters drawn from the branchial sac, to which I formerly gave 

 much weight for distinguishing the two species, now seem very doubt- 

 ful, as do all others drawn from the internal organization. However, 

 the external differences are on the whole so numerous and pronounced 

 that I have resolved to continue to recognize suhpedunculata. In most 

 of the specimens now under examination the test is light gray, in some 

 cases almost milk-white, and is soft as compared with that of tubercu- 

 lata. Furthermore, some of the individuals incHne to pedunculation 

 quite pronouncedly. 



The specimens are so closely fused together, little and big ones, that 

 it is next to impossible to separate them or even to distinguish one 

 from another m some places. For the purpose of more convenient 

 comparison I have included this species with tuberculata in the tabu- 

 lation. Table 12. 



There are two dozen or more specimens secured by the Albatross at 

 Nikolski Island, Bering Sea, on June 3, 1892, and 1 specimen from 

 Kamchatka and 5 specimens from Commander Islands, collected 

 by Leonhard Stejneger in 1882-83 ; also 1 specimen from Adakh 

 Island, Albatross, July 2, 1893. 



DENDRODOA ADOLPHI (Kupffer). 



Cynthia adolpM Kupffer, 1874, p. 245. 



Dendrodoa adolphi Hartmeyer, 1903, p. 244, pi. 10, fig. 10; 1909a, p. 1361. 



I have not seen the original description of this species. However, 

 Hartmeyer's account of it is sufficient to leave little or no room for 

 doubt that the specimens at hand belong here. But since Hart- 

 meyer's study of the species was restricted to a few poorly preserved 

 individuals, makmg it impossible for him to settle a number of points, 

 it will be best to give a full diagnosis of the species here. 



Superficial cJiaracters. — Body nearly spherical and quite regular 

 when not distorted by crowding or by pressure from some other source. 

 Orifices not far apart, both opposite the side of attachment; siphons 

 distinct but not long. Color nearly uniform hght brown. Surface 

 of the test presenting a great number of shallow, close wrinldes, 

 on the whole somewhat more distinct in the posterior hemisphere, 

 and extending around the body; but irregular radial ones present 

 also. Some of the individuals (older ones?) with surface much 



