470 



SUPPLEMENT. 



Lucinidce, p. 294-. Fig. 266, represents the animal of a species of Diplo- 

 donta, from the Philippines, as seen on 

 removing the left valve, and part of 

 the mantle within the pallial line; 

 b-c, the large pedal opening; the 

 arrows indicate the small plain incur- 

 rent orifice, and the valvular excurrent 

 orifice;/, the foot, contracted in spirit; 

 p, p, the large striated palpi; I, the 

 liver; the outer gill has a simple margin, 

 the inner is grooved and conducts to 

 Fig. 266. Diplodonta. the mouth. This genus has higher 



claims than Kellia to be regarded as the type of a family. 



Scintilla (Cumiugi) Desh. 1856. Small shells resembling Zepton, 



p. 296 ; minutely punctate ; ligament internal, oblique ; hinge-teeth 1.2; 



posterior laterals 1. 2. Distr. 37 sp. (?) Philippines, N. Australia, Panama. 



Family 12a. Astartida. 

 Astarte. Opis. Crassatella. Circe? Cardita. 



Astarte (borealis) ; mantle-margins free, plain, slightly cirrated in the 

 branchial region, united posteriorly by the branchial septum, forming a 

 single, excurrent orifice; pedal muscles {p. p), distinct from adductors; 

 gills flat, finely striated, destitute of internal partitions ; outer gill narrow, 

 elliptical, with a simple margin; inner gill grooved, conducting to the 

 mouth. 



Fig. 267. Astarte borealis, var. semi-sulcata, Leach, -f Wellington Channel. 



GouLDiA (Pacifica) C. B, Adams. S/ieH minute, triangular, furrowed ; 

 hinge like Astarte, with lateral teeth; pallial line simple. Dist. 4i sp. 

 Panama, W. Indies. 



