510 DR. W. C. M'INTOSH ON THE ANNELIDA. 



A remarkable tube (woodcut, fig. 2) occurred at Station 16, 1785 fathoms, amongst 

 Globigerina-oozQ. It consists of a minute 



tube (about the thickness of a slender silk Fig. 2. 



thread) of fine greyish mud, and having an 

 enlargement at one end, the blunt tip being 

 partly formed by a Globigerina-test. The 

 enlarged portion is tufted with what at first 

 sight (under a lens) appear to be minute 

 and finely ramose algse ; but the micro- 

 scope shows that these delicately branched 

 processes are composed of tbe same elements Tube from station 16, magnified. 



as the tube. 



The Nemerteans are represented by a species from Stations 4 & 5, Holsteinborg Harbour 

 and Godhavn Harbour. Tbe colour in spirit is brownish purple on the dorsum, whitisb 

 beneath. The short body and large proboscis distinguish it from Nemertes Neesii ; but it 

 may be related to the Amphiporus grcenlanclicus, (Erst. — the more so, as the pigmentary 

 portion of the skin is apt to fall off in spirit-specimens. The longitudinal muscular coat 

 is cut into numerous and somewhat regular fasciculi by the radiating fibres. The base- 

 ment-tissue outside the circular coat is largely developed. The proboscis conforms to 

 the typical structure. If CErsted's N. Neesii was like this form, the British species widely 

 diverges. Another species, probably a Tetrastemma, comes from Station 5, but its con- 

 dition prevents accurate determination. 



DESCRIPTION OF PLATE LXV. 



Fig. 1. Portion of the outer edge of an anterior scale of Eupolyno'e occidentalis. x 210 diam. 



Fi°\ 2. One of the upper series of the ventral bristles of Eusthenelais abyssicola. 2 a, another of the 



same series more closely resembling those in Sthenelais. x 350 diam. 

 Fig. 3. Foot from the anterior third of Ancistrosyllis gramlandica. x 210 diam. 

 Fig. 4. Heteronereis-hristle from a posterior foot of Nereis zonata, Mgrn., £ . It is not completely 



developed, and only the tips project beyond the fleshy part of the foot, x 210 diam. 

 Fig. 5. Anterior strong bristles (from the lateral pectinate row) of Aricia grmnlandica, seen from behind, 



5 a, another from the same part, viewed laterally, x 350 diam. 

 Fig. 6. Large bristle from the anterior papillose feet (inferior division) of the same form, x 210 diam. 

 Fig. 7. Two of the bifid bristles from the region behind the pectinate feet (in the same animal). The 



curve of the shaft is indicated in that on the right, x 350 diam. 

 Fig. 8. Tip of the inferior group of bristles after the change of type. The peculiar narrowing of the 



organ towards the tip is apt to escape notice, x 350 diam. 

 Fig. 9- The 20th foot of the same species (not well preserved), a, branchial process, x about 20 diam, 

 Fig. 10. Tachytrypane Jeffreysii, n. sp. Enlarged under a lens. 



Fig. 11. Transverse (vertical) section of the body- wall of the same, about the anterior third. The speci- 

 men was not well preserved, x 20 diam. 



