Mediterranean Species of Brachiopoda. 375 



fishes and Crustacea ; consequently we must not be surprised 

 to find so large an amount of error in the work above speci- 

 fied. During his lifetime few were permitted access to his 

 collection, which at his death was found in great confusion ; 

 but since that time it has been put into good order, and is 

 liberally shown at the Villa Risso by his nephew, Sig. J. B. 

 Risso, consul of the Nicaraguan republic. The shells have 

 been cleaned, remounted, and rearranged with much care by 

 Mr. Haas, a local amateur, likewise possessor of a fine series 

 of recent shells. From this examination I have determined 

 that : — 



Terebratula emarginata and T. guadrata, Risso, are synonyms 

 of Terebratulina caput-serpentis (Linmeus, sp.). 



Terebratula £r?mcafa, Risso, is the Megerlea (Anomia) truncata 

 of Linnaeus. 



Terebratula cuneata and T. Soldaniana, Risso, are both refer- 

 able to a single species, for which the designation of Argiope 

 cuneata (Risso, sp. ) must be retained. Orthis pera (Muhlfeldt) 

 is another synonym. 



Terebratula urna-antigua, Risso, is undoubtedly a synonym 

 of Argiope deeollata (Gmelin, sp.). 



Terebratula cordata, Risso. In this collection we find a spe- 

 cimen of Argiope (Ter.) neapolitana labelled as the type 

 'of Risso's cordata, which I am inclined to consider correct. 

 Risso did not figure his species; and his description is in- 

 sufficient. I therefore question whether Ave are justified in 

 preferring the term cordata to the well-known one of Ar- 

 giope {Ter.) neapolitana, Scacchi, described in 1833. 



Terebratula cardita, Risso. The figured specimen is no longer 

 in the collection; but an example of T. cordata, = A. 

 neapolitana, is labelled cardita. This is, no doubt, a mis- 

 take ; for the specimen does not resemble the figure, bad as 

 are all Risso's figures. Mr. Jeffreys and myself are of 

 opinion that the incorrect figure of T. cardita, upon which 

 Risso's description was probably founded, was a specimen 

 of Argiope deeollata. Therefore it will be necessary to ex- 

 clude the term T. cardita from the list of Mediterranean 

 Brachiopoda. 



Terebratula aculeata, Risso, is no longer to be found in the 

 collection ; and as no figure is appended to the otherwise 

 imperfect description, we are left without means of ascer- 

 taining what the shell really was ; and the name will require 

 to be erased from the list of Mediterranean shells. 



Thecidium mediterraneum, Risso, is a good and well-known 

 species. 



28* 



