GALATEA. 



Species 9. (Fig. n, h. Mus. Brit.) 



Galatea jBgtptiaca. Gal. ledd ubloiigd, compressd, 

 crassd, lavKjutri, miheejuihiterali, intiis rosea ft j/iir- 

 pureo variegatd ; marrjine cardinali, postice crasso, 

 nritici atteniiato ; dentUms Icevigatis ; latere postico 

 (ibtnse aiignhdo, ad termbmm tmncato ; itmbotiibiis 

 ralde deprensis. 



The Egyptian Galatea. Shell oblong, coinprcssfd, 

 thick, smooth, subequilateral, variegated inside with 

 pink and purple ; hinge-margin thick posteriorly, 

 attenuated anteriorly ; teeth sraootli ; posterior side 

 obtusely angular, truncated at the end ; uniboes 

 much depressed. 



Chemnitz, Conch, vol. xi. p. 334. f. 198.5, 1986. 



Galatm Clieiiniitzli, Philippi. 

 mh. I'gypt. 



Only one valve of this shell has been found. It is in 



the collection of the late King of Denmark. 



Species 10. (Fig. a, b, Mus. Cuming.) 

 Galatea Delessertii. Gal. testd pared, teit/ii, tri- 

 ffond, radiaid, lavigatd, intus purpurea radiatd ; mar- 

 giiie cardinali anguslo ; dentibiis parvis, simplicibus ; 

 latere postico siibtrigono, suljrostrato ; margine dur- 

 sali excavato ; veiitrali elevata, termino ubliqne tmn- 

 cato ; ini/boiiib/is elevatis ; margine ventrali con- 



1)elesseht'.s Galatea. Shell small, thin, trigonal, 

 rayed, smooth, rayed with purple within ; cardinal 

 margin narrow; teeth small, simple ; posterior side 

 subtrigonal, subrostrated ; dorsal margin excavated ; 

 ventral elevated, end obliquely truncated ; umbocs 

 elevated ; ventral margin convex. 



BeRNardi (genus Fischierin), Mon. Gal. et Fiseh. p. 46. 

 pi. 3. f 3, 4. 

 [phigeiiia ventricosn, I'eshayes. 



Ilab. Watercourses near Cape Palmas. 



However distinct as a species, this shell can scareelv 

 be regarded as generically separable from the thinner 

 forms amons the Ga/ritra. 



Species 11. (Mns. ? copied.) 



Galatea Bengoensis. Gal. tenia oblnav trigond. in(e- 

 qnilulerali, pondcroHil. cuiiccnlrice strialo-nigoad, intus 



alba ; latere postico obs'i'ure biangiilalo, snhproducto, 

 termino triincata ; latere antico breviiiscnlo ,■ margine 

 cardinali crasso ; dentibus complexis. 



The Bengo-rivek Galatea. Shell obtusely trigonal, 

 inequilateral, ponderous, concentrically wrinkled and 

 striated, white within; posterior side obscurely bi- 

 angular, somewhat produced, end truncated; ante- 

 rior side rather short ; hinge-margin thick ; teetli 

 complex. 



DuNKEH, Guin. p. 31. t. ix. f. 28-30. 



Hab. lliver Bengo. 



It is a m(n-e obtuse and Cyrena-sha])ed shell than most 



of the species, and the anterior side is much the shorter. 



Species 12. (Mus. Sowerby.) 

 Galatea biangulata. Gal. testa trigond, elevatd, pan- 

 derosd, Icevigatd, intus alba, purpurea et rosea varie- 

 gatd ; margine cardinali trigono, magna, dente cen- 

 tral i nilne d,'.iirrp bifida, dimricata ; latere pastica 

 subr.miralo, viiliili^ biangulalo, ad terminum truncato, 

 ante angiilns diprrxsa : margine excavato ; latere an- 

 tico breciiisr/ilu, nvniiiiiiutim ratnndato, superne exca- 

 vato ; Hmbiiiiibus prrclcralis, angulatis. 

 The biangulaji Galatea. Shell trigonal, elevated, 

 ponderous, smooth, white within, variegated with 

 purple and rose ; hinge-margin trigonal, large, with 

 the central tooth of the right valve bifid and diver- 

 gent ; posterior side somewhat excavated, strongly 

 biangular, truncated at the end', depressed in front of 

 the angles, with the margin excavated ; anterior side 

 rather short, acuminately rounded, excavated above ; 

 uuiboes much elevated, angular. 

 SOWERKY. 



Hab. ? 



The elevation of (he umlioes iind ( xcavatiou of the 

 sides o-ive this shell the form of Galalai ruiliula, but it is a 

 much flatter shell, and the distinct double angle and 

 truncation of the posterior quite remove it. The first- 

 mentioned characters again distinguish it from Galatea 

 lata, with which otherwise it has relations, and to which 

 it is similar in colouring. But the divided and widely 

 divergent central tooth of the right valve clearly separates 

 it from both species. Specimens of this species in the 

 Cuuiingian collection are marked as Galatea Bengoensis, 

 with which spceii's they have no apparent connection. 



September, 1S08. 



