84 



the fiist 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 lašt 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 vvere accom- 

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

 lovving species of the 



Genus Pinna. 

 PiKNA RūGOSA. PitiTia testd viagnd, rudi, trigond, I-ongitudinaliter 

 obtuse radiatim costatd, postici latd, rotundatd; costis j^ostici 

 . squamiferis, squamis magnis, elongatis, irregularibus, subrecurvis, 

 foliaceis, tubuįosis ; margine dorsali reclo, antico ventrali sub- 

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

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



One of the specimens obtained by Mr. Cuming measures eighteen 

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



Pinna maurą. Pinna testd oblongd, tumidd, fusco-nigricante, lon- 

 gitudinaliter radiatim costatd ; costis parvis, obtusis, suboblite- 

 ratis, postici squamiferis, sąuamis fornicatis, subrejlexis, ventra- 

 libus minoribus ; margine dorsali rectiusculo, postico subrotun- 

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

 10*5, alt. (ad partem posticam) 5*5 poli. 



Hab. apud Panamam. 



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



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

 cante squamulis į^Midioribus, obsolete subradiatd, radus squa' 

 muliferis, sqnamidis foliaceis, brevibus, postice incurvis,fornicatis, 

 tuberctda simulantibus ; margine dorsali rccto, j)Ostico subdeclivi, 

 ventrali subrotundato ; angulis posticis rotundatis ; vertice sub- 

 adunco : long. 8', alt. (ad partem posticam) 6' poli. 



Hab, apud Panamam. 



Obtained, likę the lašt species, from muddy banks. — G. B. S. 



Pinna altą. Pinna testd trigond, Jlabelliformi, radiatim longi- 

 tudinaliter costellatd ; costellis angustis, muricatis (postice prcs- 

 cipue), squamulis paucis, longioribus, ventralibus subobsoletis ; 

 margine dorsali recto, postico alto rotundato, ventrali ventricoso; 

 vertice subadunco : long, 5*5, alt. (ad partem posticam) i' 5 poli. 



Hab. in Sinu Hondūras, 



Found on sand banks. — G. B. S. 



Pinna lanceolata, Pinna testd lanccolatd, superni radiatim lon- 



