438 Mr. T. Davidson on Lamarck’s species of 
23. Terebratula birostris, Val. in Lamk. Pl. XIII. fig. 23. 
T. testa subglobosa, subrotunda, leevi, superne subcoarctata, medio 
sinuata, ad sinum duobus angulis: margine non plicato. 
Obs. Only one crushed specimen is to be seen in B. Delessert’s 
collection, without any other indication but the name written by 
Lamarck. On mimute comparisons I believe it is the same as 
Terebratula grandis of Blumenbach, a tertiary shell from Malta : 
the specimen however is in such bad condition that one can 
hardly judge of its exact form. 
24. Terebratula Ampulla (Brocchi, Conchologia Fossile Milan,. 
tab. 10. fig. 5). 
Obs. A very fine specimen of this species exists in the collec- 
tion of the museum of the Garden of Plants, and a similar one in 
that of the British Museum ; it is a tertiary species found at San 
Geminiano in the Piacentino, &c. The loop was short, as can be 
seen in a very fine specimen in M. Deshayes’ collection. 
25. Terebratula carinata, Val. in Lamk. Pl. XIII. fig. 25. 
T. testa subquadrangulari lzevi ; valva inferiore subcomplanata, supe- 
riore diedra, medio carinata. 
Obs. A few years ago Mr. Morris called attention to this spe- 
cies, which was confounded with Sowerby’s Terebratula resupi- 
nata, M. C. tab. 150. fig. 3, 4, 1818, and which hitherto appears 
principally characteristic of the hiasic period. The Ter. carinata 
of Lamarck has not that I am aware been found in the lias beds, 
but is an oolitic species distinct by its foramen, and of a much 
flatter and more elongated form. There are many varieties in 
the resupinata group, which I hope to figure and describe shortly 
in my monograph of British Fossil Brachiopoda for the Paleon- 
tographical Society. I was not able to find the type specimen of 
this species in Paris, and have therefore figured a well-charac- 
terized specimen from the oolite beds near Caen. 
26. Terebratula concava, Val. in Lamk. PI. XIII. fig. 16. 
T. testa parva: valva inferiore plana, superiore majore concava striis 
concentricis. 
Obs. Lamarck states this species to be small, white, with a 
ventral valve flattened, and a very convex dorsal one: locality 
Meudon. No other cretaceous species from that locality would 
answer the above description except Magas pumilus of Sow.” In 
Lamarck’s collection however we find a small shell which answers 
the above description, except in colour, ticketed by Lamarck Ter. 
pumila, and the only specimen that I could find; but it belongs 
to quite another species, being the well-known Oxford clay Tere- 
