648 ME. R. GURNEY ON FRESH- AND BRACKISH- WATER CRUSTACEA. 
Canthocamptub gracilis, Sars. Catfield Fen, Ormesby Broad, 
and a pond at Ingham. 
„ hirticornis, T. Scott. Hickling, Barton, and 
Dilham Broads. 
,, crassus, Sars. 
,, trispinosus, Brady. Next to C. rfapylinus this 
is the commonest species of Harpacticid in this 
district. 
,, pygmakus, Sars. Not common ; its favourite 
habitat seems to be submerged moss. 
,, Zschokkei, Schmeil. I have only a single record 
of this species — one solitary specimen only, at Sutton. 
Nitocra hibernica (Brady). Tolerably common in the “fresh- 
water” Broads. Curiously enough it never occurs 
at Sutton, though it is frequently found at Barton. 
Moraria brevipes (Sars). I took a single male which I refer to 
this species, on May 5th, on Barton Broad ; since 
then I have hunted for it assiduously, but in vain. 
Mesochra Lilljeborgii, Boeck. Occurs in brackish ponds at Cley. 
Though Cley is not in the district prescribed, this 
species may conveniently be mentioned, as it probably 
occurs also in the Norfolk rivers. 
Laophonte littorale, T. and A. Scott. Once taken at the Yacht 
Quay in the North river at Yarmouth. 
,, mohammed, Blanchard and Richard. This species was 
originally discovered in Algeria, but it has since been 
taken in North Wales by Mr. Scourfield (1895), and 
in Scotland by Mr. Scott (1897). There appears to 
be no further record of it. On September 23rd 
I took a single specimen in the Muckfleet near the 
sluices. 
Dactylopus tisboides, Claus. Occurs in the Yare as far up as 
Reedham. 
CENTROPAGIDiE. 
Diaptomus castor (Jurine). Sutton, Barton, and Sprowston — 
only in small ponds and ditches. 
„ vulgaris, Schmeil. 
gracilis. Sars. 
