NO. 1706. CCELENTERATES FROM LABRADOR, ETC.—BIGELOW. 303 



SARSIA PRINCEPS (Haeckel). 

 Plate 30, fig. 1. 

 Codonium princeps Hakckel, '79, p. 13, pi. 1, fig. 3. 



For the synonymy of this species, see Hartlaiib, :07, p. 47. 



One specimen, 14 mm. high, St. Pierre, off Newfoundland, October 1. 

 I entirely agree with Browne (:03) and Hartlaub (:07) that this 

 species is a typical Sarsia, and that the genus Codonium of Haeckel 

 ('79) is a synonym of Sarsia. For the history of the species, see 

 Hartlaub, :67, p. 47. 



The single individual (pi. 30, fig. 1) is readily identified with S. 

 Ijrinceys on account of its close resemblance to Hartlaub's figure. 

 This species is one of the best defined in the difficult genus Sarsia, 

 being distinguishable by its large size, the pronounced apical pro- 

 jection of the gelatinous bell, the presence of a '^ stiel-canal," and 

 especially by the jagged outlines of the radial canals. The latter are 

 visible in the photograph (pi. 30, fig. 1); they seem, however, to have 

 been overlooked by both Browne (:03) and Gronberg ('98), although 

 recently mentioned and figured by Hartlaub (:07). In the single 

 specimen both manubrium and tentacles are contracted, but in the 

 former the distal gastric portion is sharply defined from the more 

 proximal region which bears the sexual products. 



Color, — Manubrium and tentacles, after preservation mth form- 

 alin, are reddish, the minute ocelli black. 



This species, known from various localities on the Arctic coasts of 

 Europe, from Barents Sea, and from Spitzbergen, has also been 

 recorded by Vanhoffen ('97) from the west coast of Greenland, so 

 that its occurrence in Labrador and Newfoundland was to be expected. 



TIARA PILEATA (Forskal). 



Plate 30, -fig. 5; plate 31, fig. 7. 



Medusa pileata ForskAl, 1775, p. 110; 1776, pi. 33, fig. D. 

 Tiara pileata L. Agassiz, '62, p. 347. 



This species is represented in the collection by nine specimens, 

 taken 30 miles southeast of Nain, Labrador, August 18, ranging in 

 diameter from 6-15 mm. The largest specimen is apparently 

 sexually mature and has 37 tentacles. Differences in the shape of 

 the basal bulbs of the tentacles offer a ready distinction between this 

 species and Catahlema vesicaria, and are of much assistance in in- 

 stances where both margin and gonads are damaged (compare pi. 30, 

 fig. 5, with pi. 31, fig. 7). Tiara liileata is one of the most widely 

 distributed of Atlantic Hydromedusse. On the coast of Europe it 

 is common from Norway to the Mediterranean (Haeckel, '79; Bro^vne, 

 :03) and in American waters it has been recorded from Maine to 

 Rhode Island (Fewkes, Turris episcopalis) . 



