270 



Fart IIL — Sixteenth Annual Report 



Hermanella arenicola (Brady) — Lichomolgus arenicolus (Brady). In this 

 species all the four pairs of swimming feet have both branches three- 

 jointed. It therefore differs from Lichomolgus as now restricted, which 

 has the inner branches of the fourth pair only two-jointed. This Licho- 

 molgus agrees better with the genus Hermanella (Canu), to which I have 

 transferred it meanwhile, than with Lichomolgus proper. One or two 

 specimens of this species were found in dredged material from Otter Spit. 



AsterocJieres echinicola (Norman). This Copepod has been obtained in 

 various parts of Loch Fyne, living in the water-passages of a species of 

 sponge (Suberites), and sometimes in considerable numbers. 



AsterocJieres violaceus (Claus). In dredged material from Otter Spit ; 

 apparently rare. 



Asterocheres lilJjehorgi, Boeck. This fine species has been found in 

 one or two places in the Clyde district. In the previous catalogue of 

 Loch Fyne fauna, male and female of Artotrogus orbicularis^ Boeck, are 

 recorded from Tarbert Bank, but it has since been ascertained that the 

 supposed male of Artotrogus orbicularis was a male specimen of Astero- 

 cheres lilljeborgif while the other belonged to Artotrogus orbicularis ; 

 and this other, which was supposed to be a female, was afterwards found 

 to be a true male. (Seej9os^.) 



(?) Ascomyzon simulans sp. n. (PI. XIIL, figs. 1-9, and PI. XIY., fig. 22). 



Description of the female. — Length, 1*1 mm. of an inch). Body 

 robust ; the thoracic segments are laterally rounded oflF. The abdomen is 

 composed of three segments ; the first segment is dilated and twice the 

 length of the next, while the last is rather smaller than the penultimate 

 one; the caudal furca are very small (fig. 1, PL XIII.). The antennules are 

 comparatively short and twenty-one jointed. The basal part of the 

 antennules, which is distinctly stouter, consists of eight joints, and all the 

 eight joints are, with the exception of the first, very short ; the ninth 

 and tenth are small and contracted ; the remaining joints are compara- 

 tively slender, and longer than the basal joints, except the last three, 

 which are small (fig. 2, PI. II.). The formula shows approximately the 

 proportional lengths of^all the joints — 



15-6'5-5-5-5-5-6-2-2' 5* 8-10-10- 9-11 -12 •14- 5 - 4 - 3 

 1 • 2 • 3 • 4 • 5 • 6 • 7 • 8 • 9 • 10 • 11 • 12 • 13 • 14 • 15 • 16 • 17 • 18 • 19 • 20 • 21 



The secondary branches of the antennae are very small, and furnished 

 with two minute setae (fig. 3, PI. XIIL). The mandibles are long, slender, 

 and pointed at the apex, and are armed at the extremity with several 

 minute lateral teeth ; the palp is slender, and rather more than a third of 

 the length of the mandible ; it is two-jointed, the end-joint shorter than 

 the other, and furnished with two slightly plumose setae (fig. 4, PI. XIIL). 

 The maxillae are moderately large, and the one lobe is scarcely half the 

 length of the other ; both are provided with several long plumose hairs 

 (fig. 5, PI. XIIL). The foot-jaws are as in Cyclopicera (figs. 6, 7, PI. V.). 

 Both branches of all the swimming feet are three-jointed. The setae of the 

 last joint of the outer branches number 4 • 4 * 4 * 4 • , and of the last 

 joint of the inner 6 • 6 •(?) 6 • 4 • ; the marginal branches of the outer 

 spines are small, but the terminal spines of both branches, where present, 

 are broad and sabre-like (figs. 8-9, PI. XIIL). The fifth pair are broadly 

 ovate, and have three apical setae (fig. 22, PI. XV.). Male unknown. 



