306 Zoological Society. 



Conch. Icon., Cardita, pi. 4. f. 20. 



Care sliould be taken not to confound this species with the young 

 of the C. pecluncidus. It is a solid well-developed shell, and never 

 exceeds an incli to an inch and a half in length, 



Cardita gibbosa. Card, testd ovato-ohlongd, solidd, gihbosd ; 



albd, costis sej)temdecm,fusco-variegatis, transversim radiantibust 



rotundatis, exiliter noditlosis. 

 Conch. Icon., Cardita, pi. 4. f. 21. 



This is a solid gibbous shell, the anterior side of which is not so 

 short as in most of the oblong species of the genus. 



Cardita nitida. Card, testd subquadrato-ovali, eburned, maculis 

 ccesits variegatd ; costis duabus vet tribus et viginti, posticis prce- 

 cipue crenatis, interstitiis lineis ccesiis angularibus ornatis. 

 Conch. Icon., Cardita, pi. 6. f. 27. 

 Var. /3. Testa maculis rubidis. 



Hab. iVIisannis, isle of Mindanao, Pliilippines (found in sandy mud 

 at the depth of twenty-five fathoms) ; Cuming. 



This pretty shell is remarkable on account of the posterior ribs 

 being more strongly crenated than the anterior. 



Cardita ovalis. Card, testd ovatd, rubido-brunned, maculis albis 

 sparsim variegatd ; costis octodecim aut nocemdecim, crenatis ; 

 posticis Icevigatis, interstitiis lineis angularibus miiatis ; lunuld 

 distinctd. 



Conch. Icon., Cardita, pi. 6. f. 28. 



Var. /3. Testa alba, maculis ccesiis variegata. 



Hab. Isle of Corrigidor, Philippines (found in coarse sand at the 

 depth of seven fathoms); Cuming. 



Cardita lacunosa. Card, testd subovatd, radiatim costatd, costis 

 und vel duabus et viginti, elevatis, valde coinpressis, subtiliter 

 muricato-squamosis ; interstitiis latiusculis, lacunato-excavatis ; 

 albd, area jiosticali nigerrimo- fused. 



Conch. Icon., Cardita, pi. 7. f. 31. 



Cardita canaliculata. Card, testd suborbiculatd, luteold, fusco 

 varie sonatd ; radiatim costatd, costis und vel duabus et viginti, 

 lateraliler compressis, annulato-serratis, interstitiis excavato- 

 canaliculatis ; intus albidd, fusco ptallide tinctd. 



Conch. Icon., Cardita, pi. 8. f. 40. 



Hab. Philippine Islands ; Cuming. 



The leading features of this species are its rounded form, and the 

 peculiar manner in which the interstices between the ribs are chan- 

 neled out. 



Cardita angisulcata. Card, testd ovatd, rubido-fusco tinctd et 

 variegatd; radiatim costatd, costis und vel duabus et viginti, 2Jla- 

 nis, latiusculis, approximatis, interstitiis angustis, ^^rofunde in- 

 cisis ; costis umbones versus annulato-serratis, hinc illinc squa- 

 miferis, squamis erectis. 



Conch. Icon., Cardita, pi. 8. f. 41, 



This species may be easily recognized by the narrow and deeply- 



