258 Part III — Twelfth Annual Report 



A second species of Pseudoivestivoodia has lately been discovered in 

 material from Cromarty Firth. It differs from that now described in 

 the structure of the anterior antennae, and in the armature and form of the 

 first and fifth feet. This species is to be described later on. 



Family Lichomolgid^e. 



Genus Pseudanthessius, Claus (1889). 



[Lichomolgus, Thorell (Pars) 1859]. 



Pseudanthessius liber (Brady and Robertson). 



1875. Lichomolgus liber, Brady and Robertson (10), p. 197. 

 1880. Lichomolgus liber, Brady (8), vol. iii. p. 44, pi. lxxxvi. 



figs. 1-13. 

 1893. Lichomolgus liber, I. C. Thompson (33), p. 33, pi. xxv. 



figs. 2 a, b. 



Habitat. — Vicinity of Inchkeith (north end). Scarce. 



As has been pointed out by Dr Canu (Les Gopepodes du Boidonnais, p. 

 241), one of the principal characters by which Pseudanthessius, Claus, is 

 distinguished from Lichomolgus proper, is the structure of the fourth pair 

 of thoracic feet, the inner branches of which, in Pseudanthessius, are only 

 one-jointed, and furnished with two terminal setae. In Lichomolgus 

 proper, the inner branches of the same pair of feet are two-jointed, and 

 the first joint has a seta on the inner distal angle, while the second carries 

 two spines or spiniform setae at the apex. According to this arrangement 

 the following British species of the Lichomolgidce will be included in the 

 genus, Pseudanthessius, Claus. 



Pseudanthessius liber (Brady and Robertson), as recorded above. 

 Pseudanthessius thorellii (Brady and Robertson), ( = Lichomolgus 



thorellii, Brady and Robertson). 

 Pseudanthessius gracilis, Claus. 

 Pseudanthessius sauvagei, Canu. 



The last three, as well as the first, have been obtained in the Forth, and 

 will be referred to in the sequel. 



The following British species of the Lichomolgidai will be included in 

 Lichomolgus proper : — 



Lichomolgus fucicolus, Brady. 

 Lichomolgus furcillatus, Thorell. 

 Lichomolgus forficida, Thorell. 

 Lichomolgus albens, Thorell. 



Lichomolgus hirsutipes, T. Scott. (Firth of Forth.) 

 Lichomolgus agilis, Leydig ( == Lichomolgus concinnus, T. Scott. 

 Firth of Forth.) 



The following species of the Lichomolgidai have also been recorded 

 from the British seas : — 



Sabelliphilus sarsi, Claparide (recorded by I. C. Thompson, Liverpool). 



Species belonging to Sabelliphilus have the inner branches of the 

 fourth pair of swimming-feet three jointed, and furnished with two barbed 

 setae on the inner margin, and two slender smooth setae at the distal ex- 

 tremity. The first two joints of the anterior antennae in Sabelliphilus 

 are considerably dilated. 



