Gatty Marine Laboratory, St. Andrews. 133 
the ventral pad (the first being a small one). The ventral 
cirrus, however, is represented by a minute conical process 
in front of the pad in the two following feet. In the same 
way the example from the ‘ Porcupine’ has four long ventral 
cirri in front instead of three. 
It is clear therefore that the small example procured by 
the ‘Porcupine’ is only a variety of Delle Chiaje’s fine 
species, so abundant at Naples and elsewhere in the 
Mediterranean. 
Onuphis (Diopatra) brevibrachiata*, Ehlers ? 
Dredged in 358 fathoms ; also east of Cape de Gatte, six 
miles off shore, in 60 to 160 fathoms. In the ‘Porcupine’ 
Expedition of 1870 the Station is not given, but it probably 
was between Stations 46 and 47. 
A form having the appearance of Hyalinecia, but readily 
distinguished by the presence of tentacular cirri and the 
condition of the branchiew, which, however, rather lean to 
the type seen in Eunice. 
The two frontal tentacles arise close together in the 
median line and form two rounded and somewhat flattened 
lamella in spirit. The five tentacles have the normal 
position, but they are much shorter than in D. neapolitana, 
though they also have an enlarged base, which is ringed. 
The tentacular cirri arise from the anterior border of the 
segment, are wide apart, and have a slightly fusiform outline 
—from a contraction at the base. The palpi form two 
flattened bosses on the ventral surface. 
The first segment of the body is about the breadth of the 
succeeding. The dental apparatus is pale, a dark brown 
touch occurring at the tip of the posterior appendages of 
the maxillz, whilst at the junction of these parts a triradiate 
band is present. The tips of the maxilla and the teeth of 
the great dental plates are slightly brownish. The maxille 
are strongly curved, sharp-pointed, and rather abruptly 
swollen a little behind the middle. The posterior appen- 
dages are half-spoon-shaped, with a constriction at the base. 
The great dental plates have each about ten teeth. The 
azygos plate has ten. The right anterior curved plate has 
five; the left appears to have a larger number, but is 
broken. The mandibles have an oblique smooth edge ante- 
riorly, and at the junction of this with the shaft, externally, 
is a projection. 
The branchiz commence on the 12th foot as a simple 
- * Zeitsch. f. w? Zool. xxv. p. 49, Taf. iii. figs, 11-21. 
