1876.] Biology of the ' Valorous' Cruise, 1875. 



219 



than in the foregoing species. It was dredged at station Xo. 16 in 1785 

 fathoms. Both species had the intestinal canal filled with fine Glohige- 

 rina-mu.^ ; so that in all probability they live in this easily penetrated 

 medium, after the manner of their congeners in the sand. 



There is a single example of the Scalibregmidse, viz. Scalibregma in- 

 fiatum, H. Eathke ; while two forms represent the Chlorsemidae, viz. 

 Tro^lionia plumosa, O. P. Miiller, and Flabelligera affinis^ Sars. The 

 specimens of the latter are large. 



Scolecolej)is cirrata, Sars, Prionospio Steenstrupi, Mgrn., and a frag- 

 mentary Sjpio from station No. 3 typify the Spionidae. 



There is an example of the Cirratulidse (Cirratulus cirratus, 0. F. 

 Miiller), and one of the Halelminthidse, viz. Cajntella cajjitata, Eabr. 



The MaldanidsB comprise Maldane hicejps, Sars, Maldane Sarsi, Mgrn. 

 (a common Canadian form), Nicomache lumhricalis, Eabr., AcviotJiea cate- 

 nata^ Mgrn., and Praxilla proetermissa, Mgrn. 



The family Ammocharidae is represented by Owenia filiformis, D. Ch., the 

 tubes of which closely resemble the stalks of Alcyonidium growing in the 

 vicinity. 



Amongst the Amphictenidae are Cystenides ynmulata, L., and C. hyper- 

 horea, Mgrn., the examples in both cases being characteristically fine. 

 The sole specimen of the Ampharetidae is Ampharete arctica, Mgrn. The 

 Terebellidae, again, are more numerous, and comprise Amphitrite cirrata, 

 0. r. Miiller, Nicolea arctica, Mgrn., and JSf. zostericola, Orst. & Gr., 

 Lecena abranchiata, Mgrn., Thelepus circinnatus, Fabr. (very large), Gry- 

 mcea Bairdi, Mgrn., and Tricliohranchus glacialis, Mgrn., in tubes, chiefly 

 composed of Glohigerince. Certain fragments not yet determined pertain 

 to this family. 



The Sabellidae are represented by Sahella pavonia, Sav., S. vesiculosa, 

 Mont., Euchone analis, Kr., Chone infundihuliformis, Kr., and the 

 Serpulidae by a fragmentary, minute, shining quinquecostate Serpida*, 

 with four transverse ridges anteriorly and irregularly tvristed, Spirorbis 

 borealis, Daud., S. verruca, Fabr., S. sphnllum, L., and the tube of an 

 apparently new Ditrypa, which may be characterized as follows : — D. 

 Grcenlandica. The tube is about half an inch in length, not much thicker 

 than a thread, and curved from end to end like a bow (fig. 1). It tapers 



1 



^ Placostcgus quin^uccostatus, Daud., from the Mediterranean may be an allied 

 form. 



