of the Fishery Board for Scotland. 



117 



Canthocamptus. 



Ganthocamptus inconspicuus^ T. Scott. 



1900. Canthocamptus inconspicuus, T. Scott, 18th Ann. Kept. 

 Fishery Board for Scotland, pt. iii., p. 390, pi. xiv., figs. 1-8. 



This small Harpactid was obtained in a gathering of Entomostraca 

 collected off Musselburgh in 1894, but only recently examined: this is 

 the first time it has been obtained in the Firth of Forth, and it has only 

 previously been recorded from the Moray Firth. Canthocamptus iricon- 

 spicuus somewhat resembles G. parvus, T. and A. Scott; in general 

 appearance, and like that species it has antennules composed of six joints ; 

 but it difi'ers in several particulars, and one of the more obvious differences 

 is the longer furcal joints, and by this character alone it can be 

 disting|iished from E. parvus. 



Canthocamptus parvus, T. and A. Scott. 



1896. Canthocamptus parvus, T. and A. Scott, Ann. Nat. Hist. 

 (6), vol. xviii., p. 6, pi. ii., figs. 14-22. 



This species has recently been obtained in several gatherings, one of 

 which consisted of small Crustacea collected in the pond at the Sea-fish 

 Hatchery, Bay of Mgg, June 25, 1902. Like the Canthocamptus 

 previously mentioned, this one usually occurs very sparingly in any single 

 gathering, but it has apparently a wider distribution, and has been 

 observed not only at difi'erent times in the Firth of Forth, where it was 

 first discovered, but also in the Moray Firth and in the Firth of Clyde. 

 In this species the furcal joints are very short, and it thus differs from C. 

 inconspicuus. C. parvus is usually found near the shore about the roots 

 of algae, and especially where there is a muddy bottom. 



Genus Neohradya, T. Scott. 



Neohradya pectinifer, T. Scott. 



1892. Neohradya pectinifer, T. Scott, 10th Ann. Kept. Fishery 

 Board for Scotland, pt. iii., p. 249, pi. xiii., figs. 19-32. 



A single specimen of this rare species occurred in a gathering of small 

 Crustacea collected at the north end of Inchkeith, on November i5th, 

 1889, but not examined till October, 1902. The species was first 

 observed among some dredged materials collected off St. Monans, and it 

 was afterwards obtained in the Firth of Clyde,* but though its distribution 

 appears to be somewhat extensive, I have only rarely observed it. 



Genus Tetragoniceps, G. S. Brady. 



Tetragoniceps pygmcBus, T. Scott, sp. nov. PL iv., figs. 11-19. 



Some time ago, when re-examining a gathering of small Entomostraca 

 collected near Musselburgh in 1894, I observed odd specimens of a slender 

 copepod very like Tetragoniceps incertus, T. Scott — a species described in 

 the Tenth Annual Report of the Fishery Board for Scotland — but rather 

 smaller than that form, and the fact that one or two of them were pro- 

 vided with ovisacs showed that their smaller size could not be ascribed to 

 immaturity, but on account of their likeness to the species named they 



* Brit. Assoc. Handbook on the Natural History of Glasgow and the West of 

 Scotland (1901), p. 353. 



