r 



4S 



Hah. ad oras Chilenses. (Valparaiso Bay.) 

 Found in coarse sand at low water. — G. B. S. 



Venus lenticularis. Ven. testd lenticulari-subtrapeziformi, 

 crassd, opacd, pallidd, leevi, Uneis concentricis antice posticeąue 

 distinctis, medio obsoletis, prope umbonem elevatiusculis ; margine 

 dorsali subrotundato, postice suhangulato ; impressione cordiformi 

 elongatd, parvd, impressd ; intus albidd, margine ventrali leevi : 

 long. 3-1, lat. 1-5, alt. 2-1 poli. 



Hab. ad oras Chilenses. (Valparaiso Bay.) 



Found in coarse sand at low water. — G. B. S. 



Venus aspeerima. Ven. testd obovatd, crassiusculd, opacd, albi- 



cante, radiatim costellatd, costellis numerosis, decussatis, asperis ; 



latere antico breviore ,- margine postico dorsali declivi, rectiusculo ; 



impressione cordiformi anticd elongatd : long 2', lat. V, alt. 1"65 



poli. 

 Hab. ad Insulam Lobos dictam. 

 Found in fine sand at low water. — G. B. S. 



Venus costellata. Ven. testd obovatd, turgidd, fuscescente, cos- 

 tellis lamellosis, reflexis, postici magis eminentibus, concentricis 

 ornatd ; Uneis radiantibus impressis albis decussatd ; impressione 

 cordiformi anticd distinctd, marginibus medianis elevatiusculis; 

 intiis albd, margine ventrali crenulato : long. 2"6, lat. 1'5, alt. 

 2-3 poli. 



Hab. ad Valparaiso, Chilensium, et ad Callao, Peruviae. 



Obs. Testą nonnunquam unicolor, nonnunąuam prope apices con- 

 cinnė punctulata. 



Found in coarse sand at a depth of from six to fifteen fathoms. — 

 G. B. S. 



Venūs opaca. Ven. testd oblongd, subquadratd, subturgidd, Icevi, 

 opacd, albidd, pallidissimi purpurascente ; latere antico brbviore, 

 rotundato, concentrici ruguloso, postico subrotundato, suprh in- 

 frdąue subangulato ; margine interno integerrimo ; ligamento per- 

 magno : long. 34, lat. 1"6, alt. 2 5 poli. 



Hab. ad oras ChUenses. (Conception and Maule.) 



Found in sandy mud at low water. — G. B. S. 



Venus variabilis. Ven. testd oblongo-subtrigond, tenuiusculd, leevi, 

 politd, albd, strigilis lineisve angularibus fuscis varie pictd ; intiis 

 albd, margine integerrimo : long. 1"3, lat. 07, alt. l'l poli. 



Hab. in Australia. (Swan River.) — G. B. S. 



Venus discors. Ven. testd obovali, crassiusculd, radiatim confertim 

 striatd, antice rugis decussatd, albd fusco-nigricante instrata, co- 

 loribus valvce altera diversimodo ordinatis ; lined dorsali elevati- 

 usculd ; intiis albd, postice violaceo tinctd, margine ventrali crenu- 

 lato : long. r9, lat. ri, alt. I' 6 poli. 

 Hab. ad Sanctam Elenam, Americae Meridionalis, et adGuacomayo, 

 Americae Centralis. 



- The disparity in the arrangement of the coloaring in the two valves 

 is a remarkable peculiarity in this species. 



Found in sandy mud at from six to nine fathoms. — G. B. S. 



