92 BRITISH PARASITIC COPEPODA. 



setae and external marginal spines. The fifth feet, 

 which are situated under the genital segment, are 

 minute, one- jointed, bearing two or three short setae. 

 " Polperro, two specimens, but the record of the fish 

 on which they were found was not given. The type 

 specimen was taken on a skate at Shetland." (See 

 pp. 213-214.) 



Our figure of the species is reproduced from that in the 

 work referred to. We have not, ourselves, obtained this 

 parasite. 



Genus 14. PHYLLOTHREUS Norman, 1903. 



Syn. Phyllophora M. Edw. (name preoccupied). 



Body depressed. Carapace broadly cordate, without 

 frontal plates. Thorax furnished with three pairs of 

 broadly-rounded overlapping laminae, which extend 

 considerably on either side of the carapace. Abdo- 

 minal region two-segmented ; genital segment tolerably 

 short and broad ; distal segment small, rounded, and 

 provided with short lateral processes. 



Antennules small. Antennae assuming the form of 

 large hooks which project in front of the carapace. 

 All the thoracic legs biramose and lamelliform. Egg- 

 strings slender and elongated. 



The name Phyllophora employed by M. Edwards for this 

 genus was preoccupied by Thunberg in 1812 (for a genus of 

 Orthoptera), and by Gray in 1838. 



1. Phyllothreus cornutus (M. Edwards). 

 (Plate XIX, figs. 11-18; Plate XXIII, fig. 3.) 



1840. Phyllophora cornuta M. Edw. '(43) p. 471, pi. xxxviii, figs. 13, 14. 



1899. Phyllophorus cornutus Bassett-Srnith. (8) p. 465. 



1903. Phyllothreus cornutus Norman. (87) Ann. and Mag. Nat. Hist. 

 (7), vol. xi, p. 368 (April). 



1906. Phyllothreus cornutus Norman & T. Scott. (88) p. 212, pi. xxiv, 

 figs. 9-17. 



Female. Carapace subcordate, wider posteriorly, 

 greatest width equal to about one and one -third times 

 the length, lateral margins slightly arcuate, converging 



