104 BRADA VILLOSA. 



De Quatrefages (1865), while distinguishing the genus Brada by having the head 

 devoid of the double tuft of bristles, included such forms as B. villosa under his genus 

 Pherasa. 



1. Brada villosa, IT. Ratlike, var. Plate XCV, fig. 12 ; Plate XOVI, figs. 6—6 c and fig. 12 

 — body, papillae, etc. ; Plate CIT, figs. 2 and 2 a. 



Specific Characters. — Body, about 2 in. in length, of a uniform sand-colour, slightly 

 fusiform in outline, but tapered more distinctly posteriorly. Surface studded with long 

 clavate papillse, especially in the frontal region and on the feet, and closely beset with sand- 

 grains, so that the aspect of the dorsum is remarkably rough. Bristled segments about 

 forty-five, the body terminating posteriorly in a blunt cone, with the anus in the centre. 

 On the ventral surface, between the fourth and fifth bristled segments, is the genital papilla 

 on each side just within the base of the foot. The large aperture for the issue of the 

 oral organs lies just behind the tip ventrally, and when open shows a broad everted lip. 

 Frontal bristles (of the first and second pairs) remarkably delicate, short, tapering to a 

 fine point, pale, and with long joints. The ventral of the second pair resemble the 

 succeeding, viz. stiff, closely articulated bristles, with a finely tapered translucent tip. 

 The rest have a similar structure, and are perhaps most conspicuous on the narrow 

 region in front of the tail, which has three diminishing rings behind the last with 

 bristles. 



A species distinguished by its hirsute, sandy aspect, and the shortness and delicacy 

 of its bristles. 



Synonyms. 



1843. Siphonostoma villosum, H. Bathke. Nova Acta Acad. Leop.-Car., t. xx, p. 215, Tab. xi, figs. 



11 and 12. 



1858. Siphon ostomum villosum, Grube. Mem. sav. etrang. St. Petersb., t. viii, p. 16 (sep. copy). 



1859. „ „ Danielssen. Beise, 1858, Norsk e Yidensk. Skrift. IV, p. 120. 

 1861. „ „ idem. Beise, 1857, Nyt Mag. f. Naturvid., p. 54. 



1865. Pherusa villosa, De Quatrefages. Annel., i, p. 483. 

 1867. Brada villosa, Malmgren. Annul. Polych., p. 84. 

 ., Sars. Christianiafj., iii, p. 81. 

 „ idem. Bidrag. Christ. Fauna, p. 61. 



idem. Nyt Mag. f. Naturvid., xix, p. 261. 

 Grube. Abh. Schles. Gesellsch. Nat. (1876), p. 46. 



Marenzeller. Denkschr. K. Akad. Wissensch., Wien., Bd. xxxv, p. 35. 

 ,, Tauber. Annul. Danica, p. 113. 



Theel. Kongl. svenska Vet.-Akad. Hand]., Bd. xvi, p. 53. 



1882. Trophonia arctica, Hansen. Norw. N. Atlant. Exped. AnneL, p. 39, pi. vii, figs. 17—20. 



1883. Brada villosa, Levinsen. Yidensk. Meddel. Foren. Kjobenh., p. 123. 



» » Wiren. Chaetop. 'Vega' Exped., p. 408. 



1889 - » ,< Marenzeller. Arch. f. Naturges, lv, p. 132. 



1894 - » » Bidenkap. Christ. Vid.-Selsk. Forhandl., p. 105. 



189 7. „ „ Michaelsen. Polych. deutsch. Meere, p. 158. 



1873 



)■> 



1877. 



1879. 



