395 Part III. — Eighteenth Annual Report 



The antennas closely resemble those of Cylindropsyllus Imvis, but 

 j.ie end joints are proportionally rather longer ; the secondary branches 

 (protopodites) appear also to be slightly more elongated. The mandible- 

 palp, which is moderately slender, is of greater length than the same 

 appendage in Cylindropsyllus laivis, and is composed of two joints, 

 but the last joint is small (fig. 24). The maxillae appear to be similar to 

 those of the species named. The anterior foot-jaws (first maxillipedes) 

 are small and apparently one-jointed ; the single joint is somewhat 

 dilated, and bears two elongate processes at the distal end of the inner 

 margin ; the terminal claw is also moderately large and stout (fig. 25). 

 The posterior foot-jaws (second maxillipedes) are slender and two- jointed, 

 and armed with a moderately long, slender, almost setiform, terminal 

 claw (fig. 26). All the thoracic feet are as previously described. The 

 caudal segments are nearly as long as the anal segment, and they are each, 

 furnished with a broad, sabre-like terminal spiue nearly of the same 

 length as the furcal segment, and each spine bears a secondary setiform 

 process on the outer margin (fig. 29). The segments are also provided with 

 one or two minute hairs. 



Description of the Male. — The antennules of the male are modified for 

 grasping. The cephalo-thoracic and other appendages are similar to 

 those of the female, except in the following particulars : — (1) The outer 

 branches of the second pair of thoracic feet, which are moderately stout 

 and elongate, are each armed with a stout elongated falciform terminal 

 process, bent inwardly at nearly right angles to the joint from which it 

 springs. These processes are somewhat similar to those on the outer 

 branches of the second feet of the male of Cylindropsyllus Icevis, but the 

 apex is somewhat differently modified, as shown by the drawing (fig. 30). 



(2) The short inner branches of the third pair differ from those of the 

 female in having the first joint produced interiorly into a stout tapering 

 spine, which is slightly sinuate, and extends beyond the end of the second 

 joint; the second joint is dilated — both margins being convex (fig. 31). 



(3) The caudal segments are provided with terminal spines that are stout 

 and tapering (fig. 32). It may also be noted that the exterior spine with 

 which each of the fifth feet in the female is armed is wanting in those of 

 the male. 



Cylindropsyllus minor, though apparently not very common, is a widely 

 distributed species ; it has been obtained not only off St. Monans, Firth 

 of Forth, but also at Eallantrae Bank, Firth of Clyde. I have not, how- 

 ever, observed male specimens other than those referred to in the pre- 

 ceding description, which are from the Forth estuary ; probably the males 

 are scarcer than the other sex. 



Huntemannia jadensis, S. A. Poppe. 



1884. Huntemannia jadensis, S. A. Poppe, Abhandl. d. Nat. 

 Yer. Bremen, Bd. IX., p. 59. 



In previous years I have recorded this curious species from the head of 

 West Loch Tarbert (Cantyre), and from the Cromarty Firth, which 

 hitherto appeared to be the only two Scottish localities where this 

 copepod was known to occur. I have now to report two additional 

 stations for Huntemannia, both of which are in the Clyde district. It 

 was taken with the hand-net in shore-pools a little below high-water 

 mark at the south-west corner of the Greater Cumbrae on May 6th, 1899, 

 and in shore-pools at Inverkip on the 13th of the same month. At 

 the latter place I obtained for the first time one or two females with 

 ovisacs. I find that the females of this species carry two ovisacs of 

 average size, which contain a considerable number of small ova. What 



AA 



