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99. CYTHERiEA FULMiNATA (pi. cxxxiii. f. 137), Fakncietines, 

 Enc. Meth. t. 268. f. 3 ; Philippi, Abbild. t. HI. f. 4. 



Cyth. "testa subrliombea, sequilatera, alba, radiis fasciisque 

 ziczacforinibus interruptis rufis picta ; area nulla ; lunula foveola 

 cincta; dente cardinali postico striate." 



From the figure, and the worn specimen in the British Museum, 

 it appears to be rather trigonal and equilateral, but with the 

 ventral margin much rounded and bulging. The rays are in- 

 terrupted and of a reddish-brown colour. 



Locality not known. 



100. Cyther^a Hebr^a (pi. cxxxiv. f. 143, 144, 148), 

 Lamarck, Anim. s. vert. Ct/th. no. 30. Belessert, Eecueil, t. 8. f. 3. 



Cyth. testa crassa, subovali, ventricosa, omnino subundulatim 

 concentrice sulcata, alba, lineis angulatis et undulatis fasciatim 

 radiata, iutiis late f usco-nigrescente picta ; umbonibus prominulis ; 

 latere postico declivi, subacuminato, margine dorsali subtumido ; 

 latere antico breviusculo, rotundato, margine ventrali rotundato. 



Shell rather thick, oval, ventricose, with the posterior side 

 acuminated and the umbones elevated, sulcated, white, radiated 

 with angular and undulated brown hues, in some instances 

 clustered in bands ; ventral edge rounded, A broad band of dark 

 blackish or purpKsh brown occupies the centre of the interior. 



Ticao, Philippines; Cuming. The large specimen figui'ed is 

 in the collection of Mr. Gubba. 



101. Cyther^a sulcatina (pi. cxxxiv. f. 145, 146), La- 

 march, Anim. s. vert. C;yth. no. 29. 



Cyth. testa C. Hebrace simili, sed medio laevigata, intiis alba, 

 extiis radiatim et concentrice fasciata, vel omnino nigrescente- 

 castanea, antice albo radiata. 



This shell is smooth excepting at the sides, wliereas C. Hebrcea 

 is grooved all over; it is white or gently tinged with yellow 

 inside. One variety is rayed with brown bands connected by 

 undulating lines and bands iu the opposite direction ; the other 

 is of a deep chestnut-brown all over, excepting at the anterior 

 side, where it has several whitish rays. 



PliiHppines. Cuming. 



102. Cyther^a trimaculata (pi. cxxxiv. f. 147), Lamarck, 

 Anim. s. vert. Cyth. no. 41. 



Cyth. testa omnino sulcata ut in C. Eehrad, postice magis 



4 o 



