26 ANNALS OF SCOTTISH NATURAL HISTORY 
CopEpopA—continued. 
rst Visit, 2nd Visit, 3rd Visit, 
July 6. July 13. Aug. 24. 
* Delavalia palustris, Brady : : ne 
Canthocamptus staphylinus (Jurine) . ie: ae 
e, minutus, Claus. asic Wc? n.c. 
ts inornatus, T. Scott. Nees nic!) emi 
* hirticornts, T. Scott. Cc 
i crassus, G. O. Sars : <i C inet 
ce pygmeus, G. O. Sars. > Ene: e ie: 
. zschokket, Schmeil 2 : ig ne 
Moraria anderson-smitht, T. and A. Scott . nic, 
, poppet (Urazek) . ; ; eG: 
* Laophonte curticauda, Boeck. Hee: 
* Vannopus palustris, Brady ; ; | nCy 
* Platychelipus littoralis, Brady. : eG: 
* Dactylopus tisboides, Claus ; n.c. 
The species marked thus (*), though occasionally found in the © 
open sea, are usually more frequent in pools and estuaries where 
there is a large admixture of fresh water. The following remarks on 
some of the species may be of interest :— 
Tachidius littoralis was described and figured in part i, of the 
“Tenth Annual Report of the Fishery Board for Scotland,” 1392, 
as a new species under the name of Zachidius crassicornis, but 1 sub- 
sequently learned that it had been described by Dr. S. A. Poppe in 
1881 under the name which it now bears. It is readily dis- 
tinguished from Zachidius brevicornis (Mill.) by the. short stout 
antennules, which terminate so abruptly that they look as if their 
ends had been snipped off; the fifth thoracic feet are also narrow 
and quite unlike the two big, almost semicircular plates that form 
the fifth feet of Z: dvevicornis. 
Canthocamptus minutus 1S a small species, and apparently 
widely distributed. When viewed laterally, the principal tail 
sete seem to spring from beneath the overlapping short furcal 
joints ; from above, the minute bristles that fringe the anal oper- 
culum are bifid, and by these two characters alone the species may 
be distinguished. : 
Canthocamptus tnornatus was first observed in Rescobie Loch, 
Forfarshire, and has since been found in various other parts of 
Scotland and also in England. ‘This species may be distinguished 
by the moderately long and tapering furcal stylets. 
Canthocamptus hirticornis is found most frequently in pools and 
lochans near the sea coast, but not necessarily in brackish water. 
