86 BULLETIN 104, UNITED STATES NATIONAL MUSEUM. 



Description. — Test attached, consisting of a single chamber, erect 

 or with spreading arms, tubular, irregular or branching, wall arenace- 

 ous, with a chitinous base; apertures at the ends of the arms. But 

 a few species are known and these are largely confined to cold waters 

 at comparatively shallow depths. 



DENDROPHRYA ERECTA Str. Wright. 



Plate 33, figs. 3, 4. 



Dendrophrya erecta Str. Wright, Ann. Mag. Nat. Hist., ser. 3, vol. 8, 1861, p. 122, 

 pi. 4, figs. 4-5. — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 239, pi. 27A, figs. 7-9.— Rhumbler, Arch. Prot., vol. 3. 1903, p. 221, 

 fig. 45 (in text). 



The original description is as follows: 



Test consisting of an attached chamber, with one or more erect branching arms. 

 Basal chamber patelloid or spreading, buried in sand or mud; arms rising either 

 from the margin or from the convex sm'face, taking the form of iiTegularly branched 

 chitinous tubes, more or less thickly coated with, mud, with pseudopodial apertm'es 

 at the distal extremities of the branchlets. Height, one-seventh inch (3.5 mm.). 



Distribution. — ^Almost the only records for this and its related 

 species are about the British Isles. The records are Old Granton 

 Quarries, near Edinburgh (Str. Wright) ; low-tide pools, Cumbrae, 

 Firth of Clyde (Robertson). 



In the Challenger report Brady gives a very full account of this 

 species. The figures and description are from Brady. 



DENDROPHRYA RADIATA Str. Wright. 



Plate 31, fig. 3; plate 32, figs. 6, 7. 



Dendrophrya radiata Str. Wright, Ann. Mag. Nat. Hist., ser. 3, vol. 8, 1861, 

 p. 122.— H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, p. 238, 

 pi. 27A, figs. 10-12.— MoEBius, Abh. k. pr. Akad. Wiss. Berlin, 1888 (1889), 

 p. 13, pi. 2, figs. 22-27.— Rhumbler, Arch. Prot., vol. 3, 1903, p. 221, fig. 44 

 (in text). 



Brady describes this species as follows: 



Test sessile, depressed; consisting of a central chamber, with spreading, more or 

 less adherent, tubular arms; arras very irregular in contour, often branching, the open 

 distal extremities forming the pseudopodial apertures of the test. Walls chitinous, 

 somewhat thickly coated with mud ; central chamber in adult specimens firm and hard. 



Size very variable, rarely one-fom'th inch (6 mm.) in diameter. 



Distribution. — The folloAAang records are given for this species: 

 Old Granton Quarries, near Edinburgh (Str. Wright) ; low-tide 

 pools, Cumbrae, Firth of Clyde (Robertson); "quite common along 

 the North Wales coast" (Siddall) ; Kiel Bay (Rhumbler). 



Genus HALIPHYSEMA Bowerbank, 1862. 



Haliphysema Bowerbank, Philos. Trans., 1862, p. 1105 (type, H. tumanoiinczii 

 Bowerbank). — H. B. Brady, Rep. Voy. Challenger, Zoology, vol. 9, 1884, 

 p. 280.— Rhumbler, Arch. Prot., vol. 3, 1903, p. 266. 



Squaviulina (part) Carter, Ann. Mag. Nat. Hist., ser. 4, vol. 6, 1870, p. 346. 



