NOTES ON CORNISH CRUSTACEA. 



307 



March and April, and again in July and August. Spirontocharis 

 pusiola (Kroyer) as a county species is represented only by two 

 examples taken at Lamorna in September, 1904. Hippolytc 

 viridis (Otto) is not uncommon at times in Carrick Roads, is 

 occasionally found in Percuil River, Falmouth Harbour, and has 

 been obtained in trawl-refuse from Helford. On August 11th, 

 1906, a female carrying ova in an advanced condition was 

 captured in 4 fathoms at Maenporth. Norman records it from 

 Scilly. H. varians, Leach, is plentiful, often abundant, in rock- 

 pools, on sand, and especially among weed on the south from 

 between tide-marks into shallow water, and not infrequently 

 fairly common also in deepish water. In the west and along the 

 north coast it is locally as plentiful as in the south, but its dis- 

 tribution is naturally interrupted. At Scilly it is not common, 

 but occurs on Samson Flats, and has been taken by F. Mitchell 

 at Porth Cressa. It appears to breed all the year round. 

 H. fascigera, Gosse, is very local, but occurs in Cawsand Bay 

 (M. B. A.), occasionally in shallow water near Portwrinkle, and 

 on sheltered sand on the west side of Mount's Bay. Females in 

 berry have been found in June and July. Pandalina brevirostris 

 (Rathke) is common in the Sound and in some of the outer 

 grounds at Plymouth (M. B. A.). It has been obtained by Nor- 

 man at Polperro, and in July, 1901, was fairly plentiful on clean 

 gravel in deep water south and south-west of the Dodman. It 

 is scarce in about 25 fathoms outside Falmouth Bay, and has 

 been taken in 16 to 25 fathoms off the Runnelstone among 

 Cellaria fistulosa. At Scilly it has been dredged in 10 to 12 

 fathoms in Crow Sound midway between Toll Island and Great 

 Arthur. Females in berry have frequently been taken in March 

 and April, and occasionally in July. Pandalus montagui, Leach, 

 is very erratic in its appearance. In June, 1902, it was taken 

 in large numbers at St. Austell Bay ; from July to September, 

 1903, it was remarkably abundant at the mouth of the Helford 

 River, and in November of the same year it appeared in great 

 quantity at St. Agnes Cove, Scilly, and in St. Mary's Sound. 

 In the middle of September, 1906, a number were caught off 

 Newquay, and by the end of the month at Padstow and Port 

 Isaac. In December of that year it invaded Falmouth Harbour 

 in a dense shoal, and was 3old by a hawker as " French Prawn." 



