230 BECHER : MOLLUSCA OF THE MALTESE ISLANDS. 



on the rocks near the Salines) ; and Limncea peregra Mlill. He 

 gives two species of Paludinse — P. thermalis Lin. , and P. sp. (?). 

 I have only found one species — P. melitensis Benoit. 



I have found all mentioned in Major Feilden's list except 

 Acicula aclcula Mlill., which he says ' is not a common species 

 in Malta ; it is found in small numbers in the old line of forti- 

 fication near Corradino Valletta.' Marhtula formimi Payr. I will 

 ignore, as Major Feilden only admits it on probation as he 

 believes that the specimens he found were washed up by the 

 sea. In addition to Feilden's list I have found Zonites crystal- 

 linusM.vX\..^ and var. hydatina Bourg., Paludina mekYensisBenoit, 

 and Pupa avenacea Brug. 



The nearest and most profitable locality to Valletta is 

 Manoel Island, where most species can be found. Melleha 

 Bay is another good locality, and repays a visit. 



The omission of Paludina melitensis Benoit in Feilden's list 

 seems to be a slip of the pen, as he refers to it in his intro- 

 ductory remarks. 



Pisidium pusillum Gmehn. — In Feilden's list this is put 

 down as P. fontinale ? ( Cyclas) Drap. Mr. J. W. Taylor 

 has determined it to be as above. Stagnant water at the 

 Marsa and fountains is given as its habitat. I only found it 

 in a small stream about half-a-mile from Notabile towards 

 Boschetto and in very limited numbers. 

 Paludina melitensis Benoit. — This minute species is 

 common in most running waters, though not in any 

 numbers, but in a stream at the head of the Grand Harbour 

 (described under Alexia myosotis) in myriads. Feilden 

 does not mention this species. 

 Planorbis sp. — Mr. J. W. Taylor is of opinion that this is 

 a form of P. glaber Jeff. It is found in most places 

 where there is running water. 

 Physa melitensis Mamo. — This species, though awarded 

 specific rank, should, I believe, be more correctly described 

 as P. acuta Drap. var. melitensis. It is scattered sparsely 



J.C, iv., Oct., 1884. 



