34 



of the foot and claw, 44 inches ; lengtli of the wing 10+ inches i 

 girth of the body, 23 inches. Beak black, slender and slightly curved 

 towards the point ; covering in this bird uniform dark brown ; right 

 Aving wanting : no appearance of tail-feathers ; toes vermilion, webs 

 orange, claws brown. It is probably the young of a large-sized 

 Penguin, of which several speciea are descnbed by authors as having 

 red legs and feet. AU that is known of this specimen is, that it was 

 brought to England by the master of a South Sea Whaler, and 

 formed part of an exhibition of subjects in natūrai history." 



The exhibition was resumed of the new species of Shells coUected 

 by Mr. Cuming on the westem coast of South America and among 

 the islands of the South Pacific Ocean. They ■were accompanied 

 by characters from the pen of Mr. G. B. Sowerby. 



CuMiNGiA, nov. gen. 



Testą bivalvis, inaquilateralis, tecuivalvis, latere antico rotundato, 



postico subacuminuto ; dentibus, cardinali, in vtrdgtie valvd, vnico, 



parvo, antico, latera/ibus in alterd valvd ad utrumgue latus ujio, 



valido, in alterd nulio ; ligamento interno foveola sub-coch- 



leariformi nffixo ; impressionibus musculuribus duahus, laterali- 



bus, distantibus, anttcd irregulari, oblongd, posticd subrotundatd ; 



impressione muscuho-i j)allii sinumaximo. 



An interesting new genus of Bivalves, \vhich should be placed near 



to Amphidesma. It is remarkable for the dissimilarity of the hinge 



of the two valves, one having a strong lateral tooth on each side of 



the ligament, and the other being entirely destitute of lateral teeth. 



Having only met with a single small West Indian species, I did not 



venture to consider this genus established until Mr. Cuming showed 



me several species in bis rich collection of South American and Pacific 



shells, one of which is sufRciently large to show the characters di- 



stinctly.— G. B. S. 



CuMiNGiA MUTicA. Cttm. testd ovntd, minutissime decussatd, an- 

 tice rotundatd, postice aaiminatimtnild ; latere postico breinusculo, 

 margine dorsali declivi : long. \2, lat. 05, alt. 0"8o poli. 

 Hab. prope littora Maris Pacifici. 



This species has been obtained at the following places ; at Con- 

 ception in seven fathoms, sand and mud ; at Iquiqui in nine fathoms, 

 gravel and mud ; at Payta in hard clay at low water ; and at Muerte. 

 —G. B. S. 



CuMiNGiA LAMELLOSA. Cum. testd ovtttd, conccntrici lamellosd, 

 latere antico rotundato, postico svbaaimhiuto ; lamellis distantibus : 

 long. 0-7, lat. OSS, alt. 0-55 poli. 



Hab. prope littora Oceani Pacifici. 



Found at Payta in hard clay at lovv water ; and at Panama in deep 

 ■water. — G. B. S. 



CuMiNGiA coARCTATA. Cum. tcstd ovuli, conceittricP lamellosd; 



