268 NOTES ON THE FATTNA OF FALMOUTH. 



Ch^topods. Quite a number of the neat little houses built 

 by Pectenaria belgica can be picked up during low-water in 

 Helf ord estuary. Strangely enough, I have not so far been able 

 to find one containing the annelid, although twenty years ago 

 they seem to have been abundant. 



Tomopteris onisciformis has not been seen for a number of 

 years ; the last specimen being taken in the tow-net early in 

 September of 1890. I have not heard of its being caught 

 anywhere on the south coast since that year, although in the 

 neighbourhood of Jersey it seems to be fairly abundant every 

 autumn. 



Crtjstacea. Upwards of five specimens of Atelecyclus 

 heterodon were removed from a trammel which had been set 

 over-night on Kennack Sands in twenty fathoms of water. 



The first specimen of Leander serratus seen for the year 

 was observed under the Eastern breakwater on the 15th of April, 

 and the 30th of the same month the first female carrying ova 

 was secured. 



Since March I have been fortunate enough to obtain four 

 specimens of Praniza ceruliata. The first was removed from a 

 mackerel net early in February. The most interesting feature 

 in connection with this specimen was that the greater part of the 

 pereion was of a most brilliant blue colour, a feature not 

 observed in any of the other specimens. Two others were 

 removed from a Pollack caught during March off the Lizard. 

 The last specimen was found on a young Brill (Rhombus 

 vulgaris) captured in a tin cup in the Docksearly in May. The 

 fish was in its pelagic stage, and measured 1 1 m.m. in length. 



MoLLtrscA. One of the most interesting finds of the year 

 was a living specimen of Lucina borealis. This mollusk was 

 found under a stone at extreme low-water mark not far from 

 Greatwood. The valves measured 38 m.m. in length. 



A living specimen of Oytheria chione was dredged off the 

 lighthouse early in April. The dead valves of this species are 

 very abundant on most of our beaches, and also at Helford, 

 especially after gales of wind, 



