186 THE ZOOLOGIST. 
abdominalis. The female is most commonly found, and has 
much resemblance to a minute octopod. 
Palemon serratus. Prawn. R.—Locally is extremely rare ; 
the news of the capture of one by a shrimper becomes quite an 
item of conversation amongst the fraternity. Only comparatively 
small examples are taken. 
P. squilla. White Prawn. F.—This fine sturdy species is 
not an infrequent take in the trawls occasionally used on Brey- 
don.* This Prawn appears to prefer a muddy habitat. It is 
seldom taken offshore. Local, ‘‘Breydon Shrimp.” 
P. varians. Ditch Prawn. A.—Known locally as the “ Fresh- 
water Shrimp,” which is erroneous, Gammarus pulex being a 
sessile-eyed crustacean, equally abundant. Abounds in all the 
ditches which traverse the marshes abutting on the valleys of the 
Waveney and Bure. This species is exceedingly interesting to 
watch both in its native haunts and in captivity. It is impossible 
to secure one by hand, even when a number are “‘ skirring”’ over 
the fingers held under water. I have been much amused watching 
Sticklebacks endeavouring to dislodge these Prawns from favourite 
corners in an aquarium. ‘This species makes a killing perch-bait. 
Mysis chameleon. Opossum Shrimp. A.—The salt water in 
the warmer months teems with myriads of this species. The 
margins of the rivers, if examined very closely, will be seen to be 
simply full of them. They are the favourite food of many round 
fishes; I have examined young Herrings running from three to 
six inches in length, finding them well filled with Mysis. On one 
occasion I dissected a stranded six-inch Herring, whose maw 
contained 143 Opossum Shrimps. It is amusing to observe 
Flounders gliding along the shallows into the midst of a shoal of 
these, and to see the latter spring out from the water at their 
pursuers’ rushes, like a swarm of Lilliputian flying fishes. Around 
piles these Shrimps may be seen swimming and darting in a per- 
pendicular attitude. 
M. vuigaris. ‘‘ Opossum Shrimp.” A.—This also occurs. 
* Only two or three worn-out shrimp-boats are used for this purpose ; 
eel-pouts are sought for to be sent away to the crabbers for bait. Flounders 
and other fish are occasionally taken, and also some numbers of this species 
of Crustacea. 
—»~ ia Ae i Sa & 2 i 
