REPORT ON THE ANNELIDA. 411 
Ammocharidse (Claparede and Malmgren), closely allied to the Maldania or 
Clymenidse, all of which build tubes of sand or mud. The largest specimens dredged 
are 120 mm. in length by 2 mm. in width. The head is rounded, with a lateral mouth. 
There is no trace of cephalic branchise. The worm consists of only from seventeen to 
twenty segments ; the first few of these are very long, about 17 mm., while those of 
the posterior portion of the body are only 5 mm. in length. The segments are not 
divided from one another ; but the tori uncinigeri, which are occupied by the hair-like 
setae, and the elevations bearing small uncini, indicate the beginning of a new segment. 
The number of small hooks on the tori uncinigeri is very large There is a pair 
of glands in each of the segments, from the second to the seventh. The position and 
structure of these has been described by Claparede in the genus Owenia, in which, 
however, there are only four pairs. Most of the specimens examined are females, and 
contain many eggs. 
“ There is no doubt that this Annelid is closely allied to the genus Oioenia, but it 
differs from it in the absence of cephalic branchim. Malmgren has, however, already 
proposed the name of Myriocliele for a form in which this absence of branchiae occurs. 
The description of the northern form, on which Malmgren’s genus is founded, is not at 
hand, so that it is impossible in the meantime to determine whether the two forms are 
identical or specifically distinct.” 
The foregoing account by the lamented Dr. v. Willemoes-Suhm is the more 
valuable because the condition of the preparation is unsatisfactory. All the larger tubes 
had been slit and their contents removed ; and, as the animals are quite pulpy and 
devoid of either head or tail, very little information can be gleaned from them. 
Moreover, careful search revealed no trace of either extremity of the body in the small 
fragmentary tubes, and none amongst the microscopic slides. 
The hooks occur on somewhat shorter pads than in Owenia, and the crown is bifid 
(PL XXVa. figs. 14, a, h, c). Malmgren’s figure of the hook, which, with his descrip- 
tion of Myriocliele heeri, was published in 1867,^ is nearly, but not quite, in accordance 
with the structure of that in the present form, for the inferior fang or tooth in his 
figure is too short, but this is probably due to position. In certain views, indeed, only 
one fang is visible, so that it is probable they arise nearly on a level, or are truly bifid. 
The hooks in the genus Myriochele conform to the foregoing type, though Dr. 
Hansen describes and figures a remarkable exception in the collection made during the 
Norwegian North Atlantic expedition. In this species [Myriochele sarsii, Hansen^) the 
bifid terminal region is separately articulated to the shaft. This is unusual in the gToup. 
The bristles present toward the tip very fine lateral serratioiis, no distinct spikes 
being noticeable in the preparation. 
1 Annulata Polychaeta, Spetsbergiaj, &c., Helsingfors, ISCT. 
^ Den Norske Nordhavs-Exped., p. 41, Taf. vi. figs. 6-12. 
