of the Fishery Board for Scotland. 251 
joints, as shown by the annexed formula, which indicates approximately 
the proportional lengths of all the joints :— 
Cg ie ea a eo a 
Pe Dr yree Lier oe Cray 
Posterior short and stout. Secondary appendage represented by a single 
small plain seta which springs from near the middle of the first jot. A 
small plumose seta springs from exterior margin of the same joint (fig. 20). 
Mandibles armed with a number of spiniform teeth, the middle one being 
larger than the others. Palp small, one-jointed, provided with one marginal 
and two terminal plumose sete ; and a peculiar appendage, bifid at the apex, 
springs from a small marginal lobe (fig. 21). Posterior foot-jaws very 
small, with a slender terminal claw. The inner branches of the first pair 
of swimming-feet are composed of two nearly equal joints, the second one 
being only slightly longer than the other. The inner branches are about 
two-thirds of the length of the outer three-jointed branches. A stout setose 
spine springs from the inner distal angle of the second basal joint (fig. 22). 
Inner branches of the fourth pair small, scarcely equal in length of the first 
joint of the outer three-jointed branches, and composed of two joints, the 
first joint shorter than the other. All the swimming-feet are short and 
stout. Basal joints of the fifth pair small ; the produced interior portion is 
rather short and narrow, and provided with three stout sete—one marginal 
andtwo terminal. A slender seta, articulated near the middle, springs from 
the exterior angle. Secondary joints elongate, narrow, sub-cylindrical, bear- 
ing a stout terminal seta and two smaller marginal sete, all three being 
plumose (fig. 25). Caudal stylets moderately stout, rather longer than the 
last adominal segment. ach stylet is furnished with a small seta near the 
middle of the outer margin in addition to a few terminal sete. 
Hatitat.—Largo Bay. Not unfrequent. 
Remarks.—This species resembles Hnhydrosoma curvata in general 
appearance, but in structural details it is clearly a Cletodes. 
* Genus Pontopolites, nov. gen. 
Animal somewhat resembling Dactylopus in general form. Anterior 
antennez five-jointed; shorter than the first body segment. Posterior 
antenne like those of Cletodes, but the secondary branch is two-jointed. 
Mandible-palp small ; composed of a distinct basal part and two small one- 
jointed branches, the posterior one being rudimentary, or nearly so. Maxille 
and anterior and posterior foot-jaws as in Cletodes. First pair of swim- 
ming-feet somewhat similar to those of Attheyella pygmeza (G. O. Sars) 
(= Attheyella cryptorum, Brady). The inner brauches, which are composed 
of two nearly equal joints, are of about the same length as the outer three- 
jointed branches (fig. 14, PI. IV.). The inner brancliés of the second, third, 
and fourth pairs consist of a single and more or lés rudimentary joint. 
The fifth pair are one-branched. One ovisac. 
Pontopolites typicus, sp. nov. (Pl. VIII. figs. 9-17.) 
Description.—Female. Length, °6 mm. (;,nd of aninch). Body elongate, 
sub-cylindrical. Rostrum short, subtriangular, with the apex bluntly 
rounded. A minute seta springs from a small notch on each side of the 
apex. Anterior antennz short, stout, five-jointed, the fourth joint very 
small. The proportional lengths of the joints are shown by the formula :— 
Aba ake Ghat Sie Oe 
SE ae 9 Si, Soe 
The small two-jointed secondary branch of the posterior antenne springs 
* Tlovros, the sea ; MoAirys, a citizen, 
