Zoological Society. 125 



Ne^ra, Gray. 

 NEiERA LYRATA. N. tcstd suborbiculuri, tenui,fragili, diaphand, 

 liris transversis sulcata, antice rotundatd ; rostro retusissimo ; 

 murgine ventrali convexd. Long. 4^ ; lat. 2 ; alt. 3^ lin. 

 Hab. Basay, island of Samar, Philiiipines ; in from live to seven 

 fathoms, sandy mud. 

 Cab. Cuming. 



This species is to Necera exactly what Muctra elegans is among 

 that group, the sculpture and outline of the shells being so very 

 similar. This is of course comparatively a very miniature shell. 



Ne.er.\ tenuis. iV. testa ov(ili,fragiii, diaphand, striis concentricis 

 increment is rugosd, antice rotundatd, postice retuse rostratd ; mur- 

 gine ventrali antice subemarginatd. Long. 4^ ; lat. 2 ; alt. 3^ lin. 

 Ilab. Bais, island of Negros, Philippines ; in seven fathoms, coral 

 sand. 



Cab. Cuming. 



Less ventricose than is usual with the species of this group, poste- 

 riorly gradually attenuated into a short blunt beak, and on the ven- 

 tral margin slightly emarginate. 



Ne^ra cochlearis. N. testd majusculd, oblongd, albidd, striatd, 

 prope umbones clevatiusculd, antice rotundatd, jjostice attenuate 

 nasutd, liris angustis, versus vi7ibones respectantibus ; murgine 

 ventrali valde rotundato, postice emarginato. Long. 11^ ; alt. 8 

 lin. 

 Hab. Bais, island of Negros, Philippines ; in seven fathoms, coral 

 sand. 



Cab. Cuming. 



I'Tie description is drawn up from a single valve, but this is so 

 large, and the characters so marked, as to render its future identity 

 comparatively easy. 



June 25. — William Horton Lloyd, Esq., in the Ciiair. 



" Description of some new species of Birds brought by Mr. L. 

 Eraser from Western Africa," by H. E. Strickland, Esq., ]\LA. 



Mr. Eraser has placed in my hands for examination and description 

 a portion of the ornithological collection made by him during the 

 Niger expedition, and I now present the names and characters of the 

 new species. Mr. Eraser's researches in Western Africa have made 

 us acquainted with several new and interesting species of birds, and 

 as he was only able to bring home very few, and in some cases only 

 one specimen of each species, it would be very desirable that full 

 descriptions, illustrated by figures, of these ornithological rarities 

 should be made public, especially as it may be long before the pesti- 

 lential shores of Western Africa are again explored by naturalists. 



HlRUNDINID^, CyPSELINjE. 



Cypselus parvus, Licht., Verz. Doubl. p. 58. 



A specimen of this bird was brought by Mr. Eraser from Acra ; it 

 is probably the smallest spe^es of the genus, the total length being 



