REPORT ON THE ANNELIDA. 
301 
are shorter. In Eunice Jilamentosa the branchiae commence from the twenty-fourth to 
the thirty-fourth foot, whereas in Marphysa goodsiri they begin on the twenty-fifth or 
twenty-sixth, and in both are often bifid posteriorly. It also approaches Grube’s 
Eunice paupera ^ from the Philippines, especially in the dentition. The tentacles of this 
form are not articulated. The branchiae occasionally have three divisions posteriorly. 
About the same number (ten) are simple in each species. Another form closely con- 
nected with the present is Eunice hamata of Schmarda ^ from the coral reefs of the south 
of Jamaica. The general arrangement of the dental apparatus is similar, though 
Schmarda’s figure of the maxillae diverges and is apparently erroneous posteriorly. 
The bristles in both are allied. Schmarda mentions that the branchiae arise in the 
middle of the body and consist of only two processes, and that the dorsal cirrus is 
short and thick. The ventral cirrus, which he says is absent, had probably been 
overlooked. 
Nicidon, Kinberg. 
Nicidon hcdfouriana,^ n. sp. (PI. XXXIX. figs. 4-6 ; PL XXa. figs. 17, 18). 
Habitat. — Trawled at Station 170 (off the Kermadec Islands, north of New 
Zealand), July 14, 1874 ; lat. 29° 55' S., long. 178° 14' W. ; depth, 520 fathoms; bottom 
temperature 43° '0, surface temperature 65°'0 ; sea-bottom, volcanic mud. 
The specimen is fragmentary, the total length being about 20 mm., and the breadth 
2’5 mm. 
The head (PI. XXXIX. fig. 4) bears a series of tolerably elongated and rather thick 
tentacles, which are slightly annulated, at intervals, the central being somewhat shorter 
than the adjoining pair, perhaps from injury. The palpi are separated by a deep fissure. 
The tentacular cirri barely reach the anterior border of the buccal segment. The latter 
shows only a slight forward projection at the side of the oral curve. The eyes are 
somewhat ovoid (the long axes being antero-posterior), and lie at the bases of the external 
tentacles. 
The dental apparatus (Fig. 58) is pale brownish, with a few darker touches. The 
spathulate posterior processes have a margin of black. The maxillae are gently curved. 
The left great dental plate has six teeth ; the right possesses seven. The left lateral 
paired plate is very small, and has two or three minute teeth, the first accessory 
plate adjoining it having a larger area, indeed, the second is nearly as large. The 
first accessory on each side has a dark .rim, most distinct on the straight inferior 
1 Aunel. Fauna d. Philippinen, p. 160. ^ Neue wirbell. Thiere, I. ii. p. 125. 
® Named in remembrance of my old friend and teacher, Prof. J. H. Balfour, of Edinburgh. 
