1,95 



Cakdita laticostata. Card, teild ovalo-rhombed, turgidd, 

 iongitudine altitudinem superan/c, radiatim cosiatd, epidermide 

 fidvescenle indutd, Jasciis brimneis longitudinaliter notatd ; 

 viargine dorsali postico elevatiusculo ; costis latis, anticis prce- 

 sertim, lineis elcvatis deciissath : long. 2"lj lat. 1*4, ali. \'6 poll. 



Hub. in Americfi Centrali (Guacomayo). 



Found in sand, at a depth of from six to twelve fathoms, at St. 

 Elena, Panama, and Ileal Llejos. — G. B. S. 



Cardita radiata. Card, testd oblongd, pallesccnte, maculis vel 

 Jasciis Jiiscis variegatd ; latere antico brevi, postico elongalo ; 

 costis paiicis Intis radiatd, coslis anticis transversim decussatis, 

 mediants postice atigulatis, posticis rotundatis, dorsali sqiiamiferd: 

 long. 2-1, lat. 0-6, ^alt. 0-9 jjoll. 

 Hab. ad Salango, Columbiae Occidentalis, et ad Panamam, 

 Found in muddy sand at from six to twelve fathoms. — G. B. S. 



Cardita AFFiNis. Card, testd oblongd, jjallidd, fusco-varid, 

 latere antico brevi, postico elongato ; costis paucis latis radian- 

 tibus, anticis obsoletiusculis, posticis pronwientibus angulosis, sub- 

 squamiferis : long, l-^, lat.0'6, alt. 6 poll. 



Hab. in America Meridionuli. 



Dredged from sandy mud, at a depth of from six to twelve 

 fathoms, in the Bay of Montejo and Gulf of Nocoiya. — G. B. S. 



Cardita spurca. Card, testd obovatd, albd, epidermide olivaced 

 indutd; costis radiantibus emincntib^is granosis ornatd ; latere 

 postico superne anguloso : long. I, lat, 55, alt. 07 poll. 

 Hab. ad oras Peruviae. 



Dredged among coarse sand and gravel, in from six to ten fathoms, 

 at Iquicjui, in Peru. — G. B. S. 



Cardita muricata. Card, testd obovatd, albicante, costis radi- 

 antibus muricatis ornatd, posticis magnis distantibus, anticis mi- 

 noribus approximatis ; latere antico brevissimo : long.Vl, lat. 

 0-55, alt. 0-55 poll. 

 Hab. ad littora Insularum Maris Pacifici. 



Found attached to and under stones on the beach of Crescent 

 and Rapa Islands. A few brown spots are occasionally to be seen 

 ornamenting the dorsal and lateral parts of these shells. — G, B. S. 



Genus Pectunculus. 



Pectunculus multicostatus. Pect. testd siiborbiculari, albd, 

 castaneo rubiginoso cinereoque variegatd ; costellis numerosis, ex 

 umbone radiantibus, transversim striatis: long. 1*5, lat. \'2, alt. 

 1-5 poll. 

 Hab. in America Meridionali. 



Found in coarse sand and gravel, in twelve fathoms water, off the 

 Island of Muerte, in the Bay of Guayaquil. 



Tins is one of the most beautiful of the Pectuncidi, being of a pure 

 white, elegantly mottled with chestnut, rust-colour, and ash-grey : 

 it is remarkable that in the young shells souje of the radiating ribs 



