1908.] NATURAL SCIENCES OF PHILADELPHIA. 359 



in having 7, 8 and 9 setigerous thoracic somites respectively. Only one 

 is well preserved and this has nearly the entire branchiae wine brown, 

 deepest on the radioles and marked with white blotches. The body 

 is 41 mm., the branchiae 30 mm. long, the former much contracted, the 

 latter extended. 



Station 4198, Halibut Bank, Gulf of Georgia, 157-230 fathoms, soft 

 green mud. 



Sabella elegans Bush. 



Sabella elegans Bush, Tubicolous Annelids from the Pacific Ocean, Harriman 

 Alaska Expedition Reports, 1905, pp. 194, 195. 



A fine individual 50 mm. long with 19 pairs of branchia? has 4 rows 

 of very regular, deep purplish brown spots which occupy the radioles 

 and extend more faintly on to the pinme of each branchia. A second 

 smaller one has but 3 sets of spots, and a third still smaller one has them 

 irregularly arranged. 



Stations 4227, vicinity of Naha Bay, Behm Canal, southeastern 

 Alaska, 62-65 fathoms, dark green mud and fine sand ; 4260, Dundas 

 Bay, Icy Strait, 8^-21 fathoms, coarse sand and rocks. 



Pseudopotamilla anoculata Moore. 



Pseudopotamilla anoculata Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 566- 

 568, PI. XXXVII, figs. 28-33. 



Known from the type only, taken at Station 4230 in the vicinity of 

 Naha Bay, Behm Canal, 108-240 fathoms, rocky bottom. 



Pseudopotamilla splendida Moore. 



Pseudopotamilla splendida Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 564-566, 

 PI. XXXVII, figs. 23-27. 



Two specimens were taken at Station 4245, Kasaan Bay, Prince of 

 Wales Island, June 11, 1903, 95-98 fathoms, dark green mud and sand 

 mixed with shell and rock fragments. 



Pseudopotamilla intermedia Moore. 



Pseudopotamilla intermedia Moore, Proc. Acad. Nat. Sci. Phila., 1905, pp. 

 562-564, PI. XXXVII, figs. 15-22. 



The type only is known; originally recorded erroneously as coming 

 from Station 4267, but really from Station 4269, Afognak Bay, Afog- 

 nak Island, 14-19 fathoms, hard gray sand and rocks. 



Pseudopotamilla reniformis (Leuckart) Bush. 



Potamilla reniformis Malmgren, Ofvers, Kgl. Vet.-Akad. Forh., 1867, p. 114. 



Two specimens are each about 35 mm. long with 16 pairs 



of branchiae 6 mm. long. Both have 10 setigerous thoracic 



segments. The branchiaj are colorless except for a brownish zone 



covering the basal ^, in which all of the eyes, never more than 1 or 2 on 



