LAND AND FRESH-WATER MOLLUSCA. 195 
by Signor A. Issel in 1868. Forty-four. species are enumerated, 
of which thirty are considered by him as common to Malta and 
Sicily, three are found on other parts of the Mediterranean coast, 
seven peculiar to Malta, and four uncertain. The species in this 
list, and not in the following, are Zonites lucidus, Drap., Z. crys- 
tallinus, Miller, Helix profuga, Schmidt, H. variabilis, Drap., 
Bythinia similis, Drap., Hydrobia musaensis, Frauenfeld, Melania 
tuberculata, Miiller, Limnea peregra, Miiller, and Planorbis sub- 
angulatus, Philippi. 
Professor Benoit and Dr. Gulia published in ‘I] Barth’* for 
1872 the first portion of a more critical list of the Maltese 
Mollusca. It is to be hoped that these gentlemen may continue 
the publication. The land and fresh-water species included in 
this contribution to the Maltese fauna consists of fifteen species 
of Helix — H. aperta, Born., H. aspersa, Miller, H. calcarata, 
Benoit, H. candidissima, Drap., H. cellaria, Miiller, H. cespitum, 
Miler, H. pyramidata, Drap., H. conoidea, Drap., H. conspurcata, 
Drap., H. lenticula, Fér., H. melitensis, Fer.,. H. pisana, Miiller, 
H. striata, Drap., H. Schembri, Sch., H. vermiculata, Linn.; four 
species of Bulimus— B. acutus, Brugh., B. decollatus, Brugh., 
- B. folliculus, Caleara, B. pupa, Brugh.; two of Clausilia — 
C. syracusana, Phil., C. bidens, Linn.; Physa melitensis, Benoit ; 
Auricula myosotis, Drap.; and Cyclostoma melitense, Sowb. 
The collection of terrestrial and fresh-water Mollusca from 
the Maltese group, on which the accompanying list was based, 
having been deposited by me in the British Museum, was 
examined by Mr. Edgar A. Smith, of the Zoological Department 
of that institution. I am much indebted to that gentleman for 
having looked over the manuscript and revised the synonymy, and 
for having brought to my notice Signor Issel’s above-mentioned 
pamphlet, which contains the names of several species not included 
amongst those I met with in the Maltese group, after a searching 
examination extending over eighteen months. Signor Issel’s list 
having been compiled in part from the collection now exhibited 
in the Public Library, Valetta, and from previous publications, 
and not altogether from personal investigation, is my reason 
for publishing what I believe to be a complete and exhaustive 
catalogue of the group. Types of all the species found by me 
* «Fauna Maltese, Indice Molluschi Terrestri ed Acquatici, Benoit e Gulia,” 
‘Tl Barth,’ pp. 198—200, Malta, 1872. 
