!82 SPIOPHANES BOMBYX. 



1. Spiophanes bombyx, Olaparede, 1870. Plate XCIII, fig. 1; Plate XCVI, fig. 14_ 

 ovum; Plate XCVII, figs. 6— M— feet ; Plate XCVIJI, figs. 10 and 10a— snout 

 and tail; Plate CV, figs. 9 and 9a— capillary bristles; Plate CVI, fig. 9— dotted 

 bristles; Plate CVIT, fig. 16. 



Specific Characters. — Head with two short but conspicuous frontal tentacles or palpi, 

 the median ridge running backward therefrom terminating in a small occipital elevation or 

 papilla. Two small eye-specks on each side of the median ridge. Tentacles (tentacular 

 cirri) moderately long. Body about 3 inches long, and having about 180 segments, 

 little tapered anteriorly, and much more so posteriorly, where it terminates in a wide 

 vent with two dorsal and two ventral projections or crenations, the short cirri springing 

 from the ventral pair. Dorsum flattened anteriorly, rounded throughout the rest of its 

 extent, and marked ventrally by a median band, which is forked at the vent and turns 

 upward to join the dorsal band. A median and two lateral brownish lines occur on the 

 dorsum behind the head, but they pass only a short distance backward. Lateral region 

 vascular anteriorly, then brownish, and lastly orange from the colour of the gut. Ventral 

 surface pale, though the gut appears through the wall. The broadly subulate dorsal cirri 

 of several (four) anterior feet carried inward on the dorsum. By-and-by this cirrus 

 shows an enlargement at its ventral base, and such continues more or less throughout. 

 Ventral cirrus conical in front, and soon forms a rounded enlargement in the anterior 

 region, but posteriorly only a border for the winged hooks. Dorsal bristles long, slender 

 and tapering, usually forming a fan-like tuft in front. Ventral bristles abruptly curved 

 backward at the tips in front and dotted distally. Small winged hooks appear at the 

 fifteenth foot, the short, sharp main fang coming off nearly at a right angle from the 

 neck ; a single spike (little elevated) on the crown above. Below the row of hooks are 

 one or two strong, tapering curved bristles dotted distally. Peculiar setiparous glands 

 occur in segments five to fourteen. Each gland is large, transparent, and rounded, 

 situated at the base of the foot, and secretes long, flexible thread-like bristles. After the 

 glands cease (fifteenth segment) the bristles of the ventral division are replaced by five to 

 nine minute bifid crotchets (De St. Joseph 



n . 



Synonyms. 

 1870. Spio bombyx, Claparede. Mem. Soc. Pliys. et Hist. Nat. Geneve, t, xx, p. 485, pi. xii, %. 2 



(Suppl. Annel. Chetop. Neap., p. 121). 

 1873. ? Spiophanes cirrata, Sars. Bidrag Christ. Fauna, p. 68, Tab. xviii, figs. 1—16. 



» » » i( lem. Nyt Mag. f. Natnrvid., xix, p. 268, pi. xviii, figs. 1—16. 



1875. Spio bombix, Panceri. Atti Soc. Ital., vol. xviii, p. 528. 

 1881. „ crenaticornis, Giard. Comp. Rend. Acad. Sc, t. xciii, p. 600. 

 1883. Spiophanes Kroyeri, Levinsen. Nat. For. Yid. Meddel., p. 99. 

 1885. Spio bombyx, Cams. Fauna Medit., p. 255. 

 1887. „ „ Eisig. Monogr. Capitell., p. 335. 



1894. Spiophanes Kroyeri, Bidenkap. Christ. Vid.-Selsk. Forhandl., p. 94. 



1896. „ bombyx, Mesnil. Ball. sc. Fr. et Belg., t. xxix, p. 249, pi. xv. 



1897. „ Kroyeri, Michaelsen. Polych. deutsch. Meere, p. 154. 

 „ Spio bombyx, idem. Ibid., p. 154. 



