55 Crust* 
CRUSTACEA. 
Robertson, as Microsetella, 1873), open sea, S.W. of England, on the sur- 
face; id. 1. G. pp. 9-14, pi. xxxvi. figs. 1-10, 11-17, pi. xxxviii. figs. 11-19, 
pi. xl. figs. 17-20. 
Zosirne typica (Bock), id. 1. c. p. 15, pi. xxxix. figs. 1-12, off Sunder- 
land and Hartlepool, 45 fath. 
Bradya typica (Bock), id. 1. c. ii. p. 17, pi. xxxviii. figs. 1-10, Scilly 
Islands and off Hartlepool, 20-25 fath. 
Mobertsonia, g. n. Near Tachidius, but the secondary branch of the 
posterior antennae two-jointed. JR. tenuis (Brady & Rob., as JEctinosoma, 
1875), off Durham Coast, 27-37 fath.; id. 1. c. pp. 24-27, pi. xli. 
figs. 1-14. 
Stenhelia hispida (Norman, MS.), sp. n., Ireland, Durham, Ayrshire, 
5-30 fath., and ima (Brady, as Canthocarnptus), various British localities, 
10-35 fath. ; id. 1. c. pp. 32-3G, pi. xlii. figs. 1-14, & pi. xliii. figs. 1-14. 
Amira longipes (Bock); id. 1. c. p. 37, pi. liii. figs. 1-10, Ayrshire, 
Durham, Yorkshire, Ireland, 15-45 fath. 
Jonesiella, g. n. Near Delavalia, but the inner branch 'of first pair of 
swimming feet longer than the outer branch. J. fusiformis and spinulosa 
(Brady & Rob., as Zosirne, 1875), various British localities, 20-35 fath. ; 
id. 1. c. pp. 38-41, pi. xlviii. figs. 1-17, & pi. xlix. figs. 14 & 15. 
Delavalia palustris (Bvady) ; shallow brackish pools at the mouth of 
the Seaton Burn, Northumberland, rejlexa and robusta (Brady & Rob.), the 
former off Hartlepool, the latter off the coasts of Durham and York- 
shire, 25-35 fath., id. 1. c. pp. 43-46, pi. 1. figs. 1-8, & pi. li. figs. 1-21. 
Canthocamptus hibernicus, Mullingar Canal at Dublin, palustris, Scilly 
Islands, Suffolk and Skye in brackish water, trispinosus, River Nene at 
Peterborough, and norlhumbricus, lake at Bolam, spp. nn., pp. 52-57, 
pi. xxxix. figs. 13-23, pi. xlvi. figs. 1-12, & pi. xlv. figs. 1-22. 
Canthocamptus minutus (0. F. Miill.), name and synonymy, cryptorum 
(Brady) well distinct from it, lucidulus, new name for minutus (Claus, not 
of other authors), and gracilis (Sars), the first, third, and fourth observed 
at Bremen; Rehberg, Abh. Ver. Brera. vi. pp. 550 & 551. 
Canthocamptus trispinosus (Brady); id. op. cit. vii. pt. 1, p. 62, pi. iv. 
figs. 1-3 & 6-8, Germany. 
Antheyella, g. n., like Canthocamptus, except that the inner branch of 
the first pair of feet is scarcely at all elongated, and is either two- or 
three jointed, those of the second and third pairs are one or two- 
jointed, the first joint being very small, and that of the fourth pair 
consists of only one joint. A. spinosa, sp. n., in an old engine-pond at 
Murton Junction, near Sunderland, and cryptorum (Brady, as Cantho- 
camptus, 1868), damp roof of the pit-workings of the low main. West 
Cramlington Colliery, near Newcastle. Brady, 1. c. ii. pp. 58-61, pi. xliii. 
figs. 16-18, pi. xlvi. figs. 13-18, & pi. Hi. figs. 1-18. 
Mesochra (Bock, 1864)= Paratachidius (Brady & Rob., 1873), M. lillje- 
borgi (Bock) = P. gracilis (Br. & Rob.), Mayo, Galway, and Merioneth- 
shire, in tidal and brackish ponds, and df. robertsoni, sp. n., Connemara 
and Mayo, in brackish water ; id. 1. c. pp. 62-65, pi. xli. figs. 15-21, pi. xlvii. 
figs. 1-21. 
Tetragoniceps, g. u. Posterior antenna very long, tri-articulate ; a small 
