314 Proceedings of the Royal Physical Society. 



in the neighbourhood of Inchkeith; at Station VII. and 

 other parts of the estuary; usually not very plentiful. 



G-enus (37) Parathalestris, G. 0. Sars, 1905. 



72. Parathalestris Clausi (Norman). 



1869. Thalestris Clausi, Norman, Brit. Assoc. Report for 1868, p. 



297. 

 1888. ,, ,, G. S. Brady, Monograph vol. ii. p. 128, 



pi. lxii. figs. 1-12. 



Hob. — Largo Bay, washed from seaweed brought up by 

 the dredge, frequent; dredged also in shallow water off 

 Musselburgh. 



73. Parathalestris harpactoides (CJaus). 



1863. Thalestris harpactoides, Claus, Z. c.,p. 133, pi. xix. figs. 2-12. 

 1905. Parathalestris harpacticoides, G. 0. Sars, Crust, of Norway, 

 vol. v p. 112, pi. lxvii. 



Hah. — Dredged off St Monans in 1891, but only a few 

 specimens were observed. 



Genus (38) Phyllothalestris, G. 0. Sars, 1905. 



74. Phyllothalestris my sis (Claus). 



1863 Thalestris my sis, Claus, I. c, p. 130, pi. xviii. figs. 12-16. 

 1880. ,, ,. G. S. Brady, I. c, vol. ii. p. 121, pi. lviii. 



figs. 1 13. 



Hah. — Firth of Forth, 1894, — a fine species, very sparingly 

 but widely distributed. 



Genus (39) Halithalestris, G. O. Sars, 1905. 



75. Halithalestris Groni (Kroyer). 



1849. Harpacticus Croni, Kroyer, in Gaimard's Voyages en Scand., 



Zool., pi. xliii fig. 3 a-n. 

 1880. Thalestris serrulatus, G. S. Brady, I. c, vol. ii. p. 133, pi. lix. 



figs. 2-11. 



Hah. — East of Inchkeith, several taken with surface tow- 

 net in 1889; and in surface tow-net in June 1891 at Station 

 IX. This appears to be a truly pelagic species, and widely 

 distributed, but which only occasionally enters the Forth 



