of the Maltese Islands. ny 9 
and we cannot be very far wrong, I think, in leaving it with 
T. minor. 
I am informed by Dr. Adams that this species (in Malta) is 
peculiar, seemingly, to the point of transition between the 
* Lower Limestone” (5) and the “Calcareous Sandstone”? (4), 
and occurs there along with Thecidium Adamsi. It has also been 
recently found by Dr. Adams in great abundance im the “ lowest 
Limestone” in Gozo. Dr. Adams informs me also that this is 
no doubt the small Terebratula referred to by Capt. Spratt, in 
his valuable memoir on the geology of Malta and Gozo, as having 
been discovered by Karl Ducie when studying the geology of 
Malta for his geological map of that island. 
T. minor occurs in the Miocene, Pliocene, and Pleistocene 
deposits of Sicily; and both it and 7. vitrea live near the shore 
_of that island. 
3. Terebratulina caput-serpentis, Linn. sp. PI. I. fig. 9. 
Anomia caput-serpentis, Linn. Syst. Nat. p. 1153. 
I can perceive no difference between the Maltese Miocene shell 
and those which occur in the Mediterranean. Dr. Adams informs 
me that the shell under notice is found (although rarely) in the 
“ Caleareous Sandstone” (4). In Piedmont and Tuscany it 
occurs in the middle and upper Miocene, and in the Miocene, 
Pliocene, and Pleistocene of Sicily. I may also here mention 
that the British Museum possesses specimens from the Miocene 
of Gibraltar. 
4. Megerlia truncata, Linn. sp. Pl. I. fig. 10. 
Anomia truncata, Linn. Syst. Nat. p. 1152. 
This species occurs along with Argiope decollata in the upper- 
most bed of the “‘ Upper Limestone ” (1) as well as in the “ Sand- 
bed ” (2) in the island of Malta, and is also found recent in the 
Mediterranean. 
M. truncata is a common species in the middle and upper 
Miocene as well as in the Pliocene and Pleistocene of Italy and 
Sicily. It occurs also in the Miocene of Gibraltar. 
5. Argiope decollata, Chemnitz, sp. PI. I. figs. 11, 12. 
Anomia decollata, Chemnitz, Conch. Cab. vol. viii. p. 96, pl. 78. fig. 705, 
a to d. 
Anomia detruncata, Gmelin. 
Perfectly characterized specimens, agreeing with the recent 
species now living in the Mediterranean, occur along with Me- 
gerlia truncata, in the “ Uppermost Limestone” (1 8) and “ Sand- 
bed” (2) of the Island of Malta. It is evidently the species 
named Orthis detruncata by Prof. K. Forbes in his “ Note on the 
