GALATEA 



Species 13. (Mus. ? copied.) 



G.iLATEA LuBAKir. Gal. testa ovato-siiblrigond, rras- 

 niiisculd, laevigata, inttts alba, ; latere postico leviler 

 angulato prope marginem ; marybie declivi, coiivexo ; 

 latere antico breviusculo, subacnmiiialo ; wnbonibus 

 parvk, depressis, dente centrali valvida dextrce ad 

 apiceiii diviso. 



Lubak's Galatea. Siiell ovato-subtri.s;onal, rather 

 thick, smooth, white within; posterior side slightly 

 angidated near the margin ; margin sloped, convex ; 

 anterior side rather short, subacuminated ; umboes 

 small, depressed ; central tooth of the right valve 

 divided at the apex. 



Reknakdi, Mon. Gal. et Fisch. p. 2-1. pi. 6. f. 5, 6. 



Jhb. ? 



Small iiiiiboes and convex posterior nuirgin distin- 

 uni>h this species. 



Species 14. (Fig. a, b, Mus. Cuming in Brit.) 

 Galatea uubicunda. Gal. tesid obloiigd, crassd, rubra, 

 IcBvigatd, liiieis nigrls paiicis radiald ; latere postico 

 utteiiuato, obscure angulato, ad terminum truncato ; 

 nturgine dorsali declivi; latere antico semiovato, su- 

 . jierne declivi ; margine ventrali coiivexo ; margiiie car- 

 dinali angusto. 

 The rubiclnd Galatea. Shell oblong, tiiick, red, 

 smooth, rayed with a few black lines; posterior side 

 attenuated, obscurely angular, truncated at the end ; 

 dorsal margin sloped ; anterior side semiovate, sloped 

 above ; ventral margin convex ; hinge-margin nar- 

 row. 

 PniLiPPi, Zeitschr. fiir ]\Ial. p. 190. 

 Hub. Guinea, near Loanda. 



Much more elongated and ovate than Galatea Ma, 

 with much narrower hinge-rnargiu. The two parts into 

 which the centre tooth of the right valve is divided are 

 close to'gether, and appear like two oblique teeth nearly 

 parallel. 



Species 15. (Mus. Sowerby.) 

 (talatea triangularis. Gal. testa eUvata, trigond, 

 subaquilaterali, compressd, ponderosd, undulis magnis 

 rugatd, intus alba, ad margines purpurea sparsim 

 picto ; margine cardinali trigono, crasso ; latere pos- 

 tico obscure biangulato, ad terminum truncato ; um- 



bonibiis elceadf!, marginibiis dorsalibiin vahk declivibus; 

 margine centrali ante angulum excarato. 

 The triangular Galatea. Shell elevated, trigonal, 

 subequilateral, compressed, ponderous, wrinkled with 

 large waves, white within, sparsely painted near the 

 margins with purple ; hinge-margin trigonal, thick ; 

 posterior side obscurely biaugular, truncated at the 

 end ; umboes elevated ; dorsal margins much sloped ; 

 ventral margin excavated in front of the angle. 



SOWEUBY. 



Hab. ? 



Notwithstanding the great variation which obtains in 

 the form of specimens of the same species, it is difficult to 

 admit one so wide as exists between this shell and the 

 normal form of Galatea Bernardi. Except in an evidently 

 distorted shell, I have seen no intermediate form in any 

 collection. 



Species IG. (Fig. a, b, Mus. Sowerby; Fig. c, Angas.) 



Galatea l^ta. Gal. testa oblonyo-siibtrigond, solidd, 

 snbcomjiressu, Irviter rugatd, inter rugas laevigata, 

 plerutnijue radiatd, intus albd, purpurea variegatd ; 

 margine cardinali angustiusculo, dente centrali val- 

 vuhe dextrce bifida, hand late divergent i ; latere pos- 

 tico attenuate, obtuse biangulato, ante angulos de- 

 presso ; margine dorsali declivi, prope angulum ro- 

 tunda, superne excdvato, termino obtuse truncato ; la- 

 tere antico breviusculo, subacuininato ■ umbonibus gib- 

 bosis, obtusis, hand promiuentibus. 



The gladsome Galatea. Shell oblong-subtrigonal, 

 solid, subcompressed, slightly wrinkled, smooth be- 

 tween the wrinkles, generally rayed, white within, 

 variegated with purple ; cardinal margin rather nar- 

 row, with central tooth of right valve bifid, not 

 widely divergent ; posterior side rather attenuated, 

 obtusely biangular, depressed in front of the angles ; 

 dorsal margin sloped, rounded near the angle ; ex- 

 cavated above, obtusely truncated at the end ; ante- 

 terior side rather short, subacuminated; umboes gil)- 

 bous, obtuse, not prominent. 



PniLiPPi, Zeitschr. p. 190; Abbild. p. 123. pi. 1. f. 2. 

 Var. Galatea versicolor, Morelet, teste Adams. 



Ilab. Guinea, in a little river near Loanda. 



The beautiful specimen of the variety versicolor, fig. c. 



is from the collection of G. F. Angas, Esq. Galatea rubi- 



cunda is certainly more oval, oblong, and straight, and 



differs in the characters of the teeth. 



September, 1868. 



