REPORT ON THE ANNELIDA. 
357 
Family Opheliida:. 
The members of this family would seem for the most part to frequent shallow 
water, though in the “Valorous” expedition one species was found at a depth of 1785 
fathoms. With the exception of the voyage of the “ Eugenie,” where six examples of the 
family are given, the representatives in collections are generally few. Thus only a 
single form, Travisia, is mentioned by Sehmarda, while Grube has two (Ophelina and 
Polyophthahims) in the Philippine series. 
Ammotrypane, H. Rathke. 
Ammotrypane gracile, n. sp. (PI. XLIII. figs. 9, 12). 
Habitat . — Dredged oft’ Japan, lat. 33° 56' N., long. 130° 27' E., at a depth of 
30 fathoms. 
An elongated slender form, which measures about 23 mm. in length and a little 
more than 1 mm. in breadth. 
It requires careful inspection to discriminate this form from the European 
Ammotrypane aidogaster. There are, how^ever, three filaments at the base of the 
proboscis anteriorly, instead of two (on a pedicle) as in the latter species. The ventral 
processes beneath the arch of the tail are also shorter and more rounded at the 
extremity. The dorsal process of the tail is also short, but the posterior filaments 
resemble those in the common form. The branchiae and l)ristles are si mil ar, and the 
short (rudimentary) cirrus of the foot likewise corres2:»onds. 
In the intestine is sandy mud, containing numerous Diatoms, broken sponge-sjficules, 
fragments of very small spines of Echinoderms, and one or two minute Foraminifera. 
The body-wall agrees generally Avith that in Ammotrypane aidogaster, but the 
intermediate pedicle (between the dorsal and ventral longitudinal muscles) is short. The 
cuticle is dense, especially in the median line ventrally, while the hypoderm is very 
feebly developed. The somewhat ovoid nerve -area, which occupies the lower region of the 
pedicle, is much larger than in the British species just mentioned, in which it is almost 
in the form of a transverse band. The longitudinal dorsal muscles do not present 
such regularly arranged fasciculi superiorly in the new form as those in Ammotrypane 
(iidogaster, which slant obliquely along the dorsal arch, from a kind of median raphe. 
Travisia kerguelensis, n. sj^. (PI. XLIII. fig. 10 ; PI. XXXVIa. figs. 1, 2). 
Habitat . — Dredged at Station 149, in Betsy Cove, Kerguelen, at a depth of 25 
fathoms, and apparently in peculiarly odoriferous mud, since the specimens still retain 
the scent. Nephthys and Brada. were its companions in this habitat. 
