140 GENERA AND SPECIES. 



316. putris, g in. oval, whorls 3 or 4, mouth oval and two- 



thirds length of shell, suture rather oblique 

 and very deep. 



There are over twenty named varieties of the species of Succinca, but none of them 

 differ conspicuously from the type. 



Tapes. (VENERW&.) Plate x. 



123. aiireus, i| in. x ij in. striations concentric; yellowish, streaked 



and blotched with brown and purple ; 

 anterior laterals sunken but distinct. 



124. virgineus, i-f in. x if in. striations concentric; yellowish, rayed and 



spotted with reddish brown ; laterals 

 indistinct. 



125. pullastra, if in. x i| in. striations radial and faint; whitish, rayed 



and streaked with browns and purples ; 

 laterals ridge-like and indistinct. 



126. dccussatus, 2 in. x if in. striations radial and strong ; yellowish, with 



rays and streaks of brown. 



Tectura. (ACM&IDJE.} Plate xxi. 



319. lestudinalis, J in. inside pearly, central scar chocolate. 



320. virginea, $ in. inside porcelain white, central scar white. ' 



321. fulva, % in. inside orange. 



Tellina. (TELLINIDJE.) Plate viii. 



go. balaustina, 4 in. x in. shell equilateral and not grooved, inside 

 tinged with orange. 



91. crassa, 2 in. x i| in. shell equilateral and grooved, inside tinged 



with rose. 



92. balthica, $ in. x ^ in. shell pointed at posterior end, margin 



rounded in front, hinge line curved. 



93. tennis, i in. x in. shell pointed at posterior end, margin not 



rounded in front, hinge line angular. 



94. fabula, | in. x ^ in. white, with or without a tinge of yellow. 



95. squalida, if in. x i in. orange, often with a red mark near the beaks. 



96. donacina, i in. x f in. shell angulated and thin, colour white and 



pink with a streak below the beak ; posterior 

 lateral removed from the beak. 



97. pusilla, J in. x J in. shell angulated and convex, colour white 



and pink, with a streak below the beak. 



Teredo. (TEREDINIDJE.) Plate xiv. 



166. norvegica, sheath 12 in. pallets large, blades wedge-shaped in front. 



167. navalis, sheath 6 in. pallets small, blade forked and excavated 



on its outer edge. 



168. pedicellate, sheath : ]; in. pallets with middle part oval, outer part 



square. 



