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



217 



There is no example of the Hesionidse or SyUidae. Good specimens 

 of Nereis jpelagica, L., and Nereis zonata, Mgrn., represent the Nereidae. 

 The latter shows fine reddish-brown bars in the preparations. Under 

 the family of the Lumbrinereidae is Lumhriconereis fragilis, O. E. 

 Miiller, a species tolerably plentiful and of all sizes, though none are 

 so large as those procured in the ' Porcupine ' off the Spanish coast. 

 The Eunicidee and Onuphididse are each represented by a single species, 

 viz. the former by the Eunice limosa, Ehlers, and the latter by yery 

 large examples of Nothria conchylega, Sars, in tubes of small pebbles. 



In the Grlyceridse are Olycera cajpitata, Orst., and Glycera setosa, Orst., 

 the latter having been procured at the surface of the sea in Waigat 

 Strait. 



Eour forms belonging to the Ariciidse occur, viz. a new species allied 

 to Aricia Kujpfferi, Ehlers, two small fragments pertaining to different 

 species, and Scoloj)los armiger, 0. E. Miiller. In the first-mentioned 

 species the bristles are much more developed than in Aricia Latreillii, 

 while no pectinate rows of papillae exist on the ventral surface, as in 

 the latter, Aricia Ciivieri, Aud. & Ed., and Aricia Kupfferi^ Ehlers. In 

 this respect it agrees with. A. Norvegica^ Sars, a form which extends to 

 the Atlantic, but differs in the structure of the process at the summit of 

 the pectinate rows of the anterior feet. The bifid bristles in the superior 

 division of the foot appear to be characteristic ; but as previous authors 

 seem to have overlooked them (they are present in all the species ex- 

 amined), the value of this test is at present not fully available. The 

 specimen is imperfect, and measures about | of an inch in length. 

 The snout is elongated and pointed, and has traces of blackish pig- 

 ment near the posterior border, dorsally. The mouth opens on the 

 ventral surface between the posterior border of the head and the first 

 bristle-bearing segment ; and on each side it has two large curved lobes, 

 which pass backward to the commencement of the second bristle-beariug 

 segment. There are sixteen lateral rows bearing hooks anteriorly (2nd to 

 the 17th), and then the form of the foot alters. These rows are for the 

 most part furnished with pectinate papillae, the superior being in each 

 case longer than the others. The branchiae commence on the fifth seg- 

 ment. There is no trace of pectinate rows of papillae on the ventral 

 surface. The forked bristles of the dorsal division of the foot have one 

 of the limbs considerably longer than the other, and peculiarly curved. 



The Opheliidae are represented by good specimens of Ammot7'ypane 

 aulogaster, H. Eathke, numerous examples of Ophelia limacina, H. E,., 

 a Travisia-like Annelid with no other appendage than minute bristles, 

 and two interesting new forms. Eor the latter and several allied species 

 the name Tachytrypane may be given, from their active boring move- 

 ments through sand and mud. Though in external appearance the new 

 forms somewhat resemble Ammotrypane, the structure of the body-wall 

 and other points clearly separate them both from the latter and Ophelia, 



