— 9 — 



meration of the Maltese Testaeea, disposed in families after 

 Lamarck, with those few modifications of Philippi in the 

 "Fauna Molluscorum viventium et in T«llure tertiaria fossiliurn 

 Regni utriusque Siciliae," aud the degree of rarity of their oc- 

 currence. 



MSS. No. 2 and 3 are apparently the rough copies of 

 Mr. Mamo, and besides many variations, and a more accu- 

 rate enumeration of the Maltese Mollusca, and the degree of 

 rarity of their occurrence, contain, especially MS. No 3, 

 many particulars about the localities where they might be 

 found, and also their vernacular narne» 



MS. No. 4, besides a very short enumeration of Mol- 

 lusca as in MS. No. 1, contains the description of some of 

 the species discovered by the late Mr. Mamo. 



8. The following are some of tlie variations I have al- 

 luded to : — 



( aj Iu MS. No. 1 there is only the ClavageVa mamoi, 

 discovered and described by Mr. Mamo, which he had sent 

 to England, but which was subsequently called C. aperta, 

 Sowerby, In the MSS. No. 2 and 3 there are four species, 

 ••the C. aperta, Sowerby; C. melitensis, Calliaud; C. angula- 

 ta, Philippi; and C. balanorum, Scacchi, which last, being 

 an inhabitant of the shores of the Bay of Naples, was for 

 the first time detected in Malta by Mr. Mamo upon a Spon- 

 dylus gaederopus, of which four species, the first three only 

 exist in the public Collection of the Library. In MS. No. 4 

 there are four other species, the C. mamoi, C melitensis, 

 and by mistake the C. aperta, which is the same as C. mamoi, 

 and the C. exagona, which is the same as angulata, Phi- 

 lippi. 



fb) In MSS. No. 1. 2. and 4 I have found only the 

 Teredo bruguieri, delle Chiaje, of which there is a speci- 

 men in the public Collection. In MS. No. 3, there is also 

 the T. palmulata, delle Chiaje, which is considered as very 

 rare, and Mr. Mamo had not even an example in his pri- 

 vate Collection, and I think its existence may be doubted. 



fcj The four MSS., besides the Pholas dactylus, L., 

 mention the Pholas crispa, Blainville, as ravisshna, of 



