SIPHONARIA. 



Species 27. (Fig. n, h, Mus. Cuming.) 

 SiPHONABiA SiciUiJOEENsis. Sijih. testd depresse ova/u, 

 radintm Jorliter cosiaid et striata, costis anticis late 

 dioerffeidii/is ; pellucido-alid, intits ferrughieo-nigro 

 partim tbictd. 

 The Siquijor Siphonaria. Shell dcpressly ovate, ra- 

 diately strongly ribbed and striated, anterior ribs 

 broadly diverging ; transparent white, partially 

 stained within with rusty black. 

 Hab. Island of Siquijor, Philippines. 



A flat transparent white species, witli the side ribs 

 broadly diverging, and the interior partially stained with 

 rust-blact. 



Species 28. (Fig. a, b, Mus. Cuming.) 

 SiPHONAKIA COCHLEARIFORMIS. Sijih. testd ovatd, pluiw- 

 convexd, subirregidan, profuse radiatm corrufjato- 

 liratd, sinu laterali lata, cocJdeariformi ; albidd, intus 

 aurantio-fusco tinctd. 

 The spoon-shaped Siphonaria. Shell ovate, flatly 

 convex, rather irregular, profusely radiately wrinkle- 

 ridged, lateral sinus broad, spoon-shaped; whitish, 

 stained within with orange-brown. 

 Ilab. Isle of Hainan, coast of China. 



Of an irregular convexly flattened growth, closely 

 wrinkle-ridged, with a broad spoon-shaped sinus. 



Species 29. (Kg. «, b, i\Ius. Cuming.) 

 Siphonaria Luzonica. Siph. testd suborbicidari, de- 

 press coHvexd, radiatim costaid, costis distanlibiis, 

 aiigustis, prominentibus, interstitiis nitide elevato-stri- 

 ntis ; pellucido-albd, ferrugineo-nigro partim tinctd. 



The Luzon Siphonaria. Shell suborbicular, depressly 

 convex, radiately ribbed, ribs distant, narrow, pro- 

 minent, interstices neatly clevately striated ; trans- 

 parent white, partially stained with rust-black. 



Hab. Pntcao, Island of Luzon, Philippines. 



Characterized by strong distant ribs, the interstices 



being neatly sculptured with close-.set, raised stri;e. 



Species 30. (Fig. «, b, Mus. Cuming.) 



Su'iloNAHIA Baooni. Sipli. testd convexo-pland, nitide 

 radiatim liratd, interstitiis tennistriatis ; albd,ferr%i- 

 gineo-iiigro pallide mactdatd, intus aurautio tinctd. 

 Bacon's Siphonahia. Shell convexly flattened, neatly 

 radiately ridged, interstices finely striated ; white, 

 iaintly spotted with rust-black, tinged with orange 

 within. 

 Hab. Swan Eiver, New Holland ; Bacon. 



Distinguished by a particularly neat and delicate pat- 

 tern of rayed sculpture. 



Species 3L (I?ig. a, b, Mus. Cuming.) 



Siphonaria corrugata. Siph. testd suboblongo-ovvMi, 

 ilj-r^ -v", ,■,'■,/;„/, rostatd, interstitiis nitide slriatis, 

 (■:>:' . iiiVdms late divergeHtihus ; albd, pal- 



Ji,lrj„.r. ,.-„;■' inictd. 



The puckered Siphonaria. Shell somewhat oblong- 

 ovate, depressed, radiately ribbed, interstices neatly 

 striated, the anterior lateral ribs broadly diverging ; 

 white, tinged with pale brown. 



Hab. Puteao, Island of Luzon, Philippines ; Cuming. 

 Distinguished chiefly by its more oblong form : 



rainently developed ribs. 



pro- 



May, 18.5G. 



