Zoological Society. 159 



breast, where it is lost in the mingled grey and buffy brown of the 

 abdomen ; upper mandible dark reddish brown ; basal portion of the 

 lower one oil-green ; tibiae and hinder part of the tarsi bright yellow ; 

 remainder of the legs and feet yellowish brown. 



Total length 1 7 inches ; bill 3 J ; wing 7f ; tail 3 ; tarsi 2J. 



Hub. East coast of Australia. 



Remark. — Differs from the Ardetta Juvanica in being considerably 

 larger in size and in the great size of its head and bill. 



Cracticus picattjs. 



Collar at the back of the neck, centre and edge of the wing, rump, 

 abdomen, under tail-coverts and tips of all but the centre tail-feathers 

 white ; remainder of the plumage deep black ; irides dark reddish 

 brown ; bill ash-grey, the tip black ; legs and feet dark greenish grey. 



Total length 10 inches; bill if; wing 6; tail 4J; tarsi \\. 



Hab. Northern Australia. 



Remark. — A miniature representative of, and nearly allied to, but 

 distinct from, Cracticus nigrogularis . 



March 14. — Dr. Gamble in the Chair. 

 The following papers were read : — 

 1. Diagnoses Specierum novarum generis Planorbis collec- 



TIONIS CUMINGIAN^E. AuCTORE GuiL. DuNKER, DRE. 



1. Planorbis inflatus, Dkr. PI. testd magnd, inflatd, fusco-, 

 olivaceo • et cinereo-corned, nitidd, striatd, supra profunde umbili- 

 catd, infrd concavd, anfractibus 4 inflatis celerrime crescentibus ; 

 aperturd reniformi ; fauce fused. 



Diam. max. 1" 1'" ; alt. aperturae 8'". 



Species turn colore, turn habitu varietatibus quibusdam PL cornel, 

 simillima. Anfractus primordiales striis spiralibus insignes. 

 Patria cochleae eximiae ignota est. 



2. Planorbis nitidulus, Dkr. PI. testd parvuld, pallide corneo- 

 fulvescente, nitiduld, pellucidd, suprd profunde umbilicatd, basi 

 pland ; anfractibus 3^ rotundatis ; aperturd oblique ovatd. 



Diam. max. If'; alt. •§'". 



Species haec parvula basi plana et latere superiore umbilicato nos- 

 cenda, in Chersoneso aurea (paeninsula Malacca) plantis aquaticis 

 insidens reperta est. (H. Cuming.) 



3. Planorbis Gilberti, Dkr. PI. testd depressd, sublenticular i, 

 pallide corned, nitidd, pellucidd, superd pagind planiusculd, in- 

 ferne umbilicatd; anfractibus tribus utrinque obtuse angulatis ; 



infra medium acute carinatis ; aperturd obliqud, subcordatd ; mar- 

 gine superiore producto. 

 Diam. max. 2*'"; alt. f ". 



Species Planorbi exacuto, Say., similis, differt vero umbilico latiore, 

 foveola. lateris superioris mediana, et carina obtusa in supera et infera 

 anfractuum pagina. Reportata est e Nova Hollandia a el. Gilbert. 



4. Planorbis chinensis, Dkr. PI. testd parvd, corned, subtililcr 

 striatd, subdiaphand, pagind superd convexiusculd, medio imprcssd, 



