406 T. Davidson — Tertiary Brachiopoda. 



locality situated on a small hill in the plain of Lombardy, and in 

 the territory of Lodi. This sand is a continuation of the Miocene 

 of the Parmesan and Plaisentin, a spot celebrated from the occur- 

 rence of beautiful specimens of Haliotis monilifera It occurs like- 

 wise, according to Sig. Meneghini, in the Upper Miocene of Parlascio 

 and Palazzo in Tuscany ; at Monte Gibio and near Messina. In the 

 Older and Newer Pliocene, it is a common fossil in Tuscany, in 

 Calabria, and especially near Messina. It has been collected from 

 the quaternary deposits of Italy and is alive in the Mediterranean. 

 It will also be seen from one or two of our figures that sometimes, 

 after having attained a certain period of its growth, the extension of 

 the ribs is suddenly stopped (PL XXI., Fig. 6-8), the shell con- 

 tinuing to extend, but without reproducing any of its ornaments; 

 this I have also noticed to be the case in several recent examples of 

 the same species. 



41. Argiope costulata (Sequenza), PI. XXL, Fig. 9, 9a, 9&. Pied- 

 montese Brachiopoda. Annali dell' Accad. degli Aspiranti Naturalisti 

 di Napoli, third series, vol. vi., pi. 2, fig. 2, 1866. 



I know very little about this species (?), which seems to approach 

 by its external and internal characters to Argiope cuneata of Eisso. 

 Its single septum in the dorsal valve removes it at once from A. 

 decollata. A single example was found by Sig. Eovasenda in the 

 Middle Miocene of Baldissero in Piedmont. More specimens will 

 have to be collected and examined before its specific claims can be 

 properly ascertained. 



42. Argiope cuneata (Eisso). Histoire Nat. des Principales pro- 

 ductions de I'Europe Meridionale, vol. iv., p. 388, fig. 179, 1826. 



This species is stated by Sig. Sequenza to occur in the Quaternary 

 deposits of Sicily, but as I have never seen any fossil specimens I 

 cannot do more than to record his statement. It is found alive in 

 the Mediterranean. 



43. Argiope Neapolitana (Scacchi sp.), PL XXL, Fig. 10. Scacchi 

 Oss. Zool., p. 18, 1833, and Philippi Enum. Moll. Sicil., vol. i., p. vi., 

 fig. 15, 1836. 



Two or three specimens of this well-known species were found by 

 Sig. Meneghini in the Pliocene of Siena. When quite young it does 

 not always exhibit those two or four rounded ribs which occur in 

 middle-aged and adult individuals, and in this early condition may 

 be sometimes mistaken for A. lunifera or A. cistellula. I am, there- 

 fore, uncertain whether the minute specimen (PI. XXL, Fig. 11) 

 which was found by Sig. Meneghini in the same deposit and locality, 

 and which was identified by him with the A. variolata (Sold.), 

 (Saggio Tav. 150, fig. 293) may not be referable to one of the above- 

 named species. In his work, " Fauna del Eegno di Napoli," pi. iii., 

 fig. 5, Prof. Costa has figured a specimen of J.. Neapolitana without ribs. 



44. Argiope lunifera (Philippi), PL XXL, Fig. 12. Terebratula 

 (afterwards OrtUs) lunifera (Philippi). Moll. Sicil., vol. i., p. 97, 

 and pi. 4. fig. 16, a. b., 1836. Argiope cistellula (Wood., Sequenza). 

 Sicilian Brachiopoda, p. 71, pi. viii., fig. 7. 



Mr. Jeffreys assures me that after a careful study of the Terehra- 



