84 



the first specimen of the American Cuckoo, Coccyzus Americanus, 

 Bon,, recorded in the British Catalogue ; and showed its identity of 

 species by comparing it with an American specimen exhibited for 

 that purpose. 



He also exhibited one of the two specimens of the Noddy, Sterna 

 stolida, Linn., noticed by him before the Linnean Society last year 

 as having been obtained near the coast of Ireland. 



The exhibition was resumed of the previously undescribed species 

 of Shells contained in the collection of Mr. Cuming, Those brought 

 on the present evening under the notice of the Society were accom- 

 panied by characters by Mr. G. B. Sowerby, and comprised the fol- 

 lowing species of the 



Genus Pinna. 

 Pinna rugosa. Pinna testa magna, rudi, trigond, longitudinaliter 

 obtuse radiat'im costatd, postici lata, rotundatd ; costis postici 

 - squamiferis, squamis magnis, elongatis, irregularibus, subrecurvis, 

 foliaceis, tubujosis ; margine dor salt recto, antico ventrali sub- 

 coarctato : long. 9', alt. {ad partem posticam) 6' poll. 

 Hub. in Sinu Panamensi. (Isle of Rey.) 



One of the specimens obtained by Mr. Cuming measures eighteen 

 inches in length. They were procured from sand banks. — G. B. S. 



Pinna maura. Pinna testa oblongd, tumidd, fusco-nigricante, lon- 

 gitudinaliter radiatim costatd ; costis parvis, obtusis, suboblite~ 

 ratis, postici squamiferis, squamis Jbrnicatis, subreflexis, ventra- 

 libus minoribus ; margine dorsali rectiusculo, postico subrotun- 

 dato, ventrali postico subventricoso, ventrali antico declivi : long. 

 10'5, alt. {ad partem posticam) 5'5 poll. 



Hob. apud Panamam. 



Obtained from muddy banks. — G. B. S. 



Pinna tuberculosa. Pinna testa subtrigond, altd, fusco-nigri- 

 cante squamulis pallidioribus, obsolete subradiatd, radiis squa- 

 muliferis, squamulis foliaceis, brevibus, postice incurvis,fornicatis, 

 tubercula simulantibus ; margine dorsali recto, postico subdeclivi, 

 ventrali subrotundato ; angulis posticis rotundatis ; vertice sub- 

 adunco : long. 8", alt. {ad partem posticam) 6' poll. 



Hab. apud Panamam. 



Obtained, like the last species, from muddy banks. — G. B. S. 



Pinna alta. Pinna testa trigond, flabelliformi, radiatim longi- 

 tudinaliter costellatd ; costellis angustis, muricatis {postice prce- 

 ciput), squamulis paucis, longioribus, ventralibus subobsoletis ; 

 margine dorsali recto, postico alto rotundato, ventrali ventricoso; 

 vertice subadunco : long. 5'5, alt. {ad partem posticam) 4:' 5 poll. 



Hab. in Sinu Honduras. 



Found on sand banks. — G. B. S. 



Pinna lanceolata, Pinna testa lanceolatd, superni radiatim Ion- 



