5C8 REPORT— 18C3. 



39. Jrochvs nuripiffmeiifiim, Jonas. Panama. [Probably not from W, America.] 

 17. FhaaiatieUa iH'rforata,Vh\\. Mazatlan, Panama +7%. ronjy^^a, Gld.* Kather 

 out of place t ; has neither form nor texture of Phadanella. [The aberrant 

 form is due to the figured specimen being quite young; the adults in 

 Brit. Mus. Col. prove the texture, colouring, and operc. to be normal.] 

 Genus Simpiefopm. This group, intermediate between Vitrina and Siicciiiea, ia 

 stated to be peculiar to Brazil and Mexico, where Vitrina is not known. 



In the Monograph of TerehratuUdce, which is prepared with unusual care, 

 and tlie general introduction to which is well worth attentive perusal by all 

 students, occur the following species which bear upon the West Coast fauna 

 or synonymy : — 



2. Terehraiiila (T'uldlieitnia) dilatata, Lam. ,= 71 Gaudichaudi, Blainv. "Str. 

 Magellan," teste Gray, in Brit. Mus. Cat, without authority. [The E. E. 

 specimens varied considerably in outline ; and according to Darwin, and 

 what we know of the variations of fossil species, it is quite possible to 

 believe that this and the next species had a common origin. The great 

 development of this most interesting form in the cold regions of South 

 America is extraordinary.] 



S. Terebrafiila ( Wuldheiinia) t/lobo^a (\'al.). Lam., from type. = T. Californica, 

 Koch. "California, Coquimbo. Califomian form well known; small 

 specimen in Mus. Taylor, marked ' de Coquimbo.' " [There appears no 

 authority for the general belief that this line species is Califomian. It was 

 taken in abundance by the naturalists of the XT. S. E. E. at Orange Bay, 

 Magellan. The Califomian shell, which is probably the original (V/A- 

 foniica, Koch, (not of authors) is a distinct species, teste Rve. from Dr. 

 Cooper's specimens.] 



7. Ttrchratula {TerchnituUna) radiata, live., Mus. Cum. ? Straits of Corea, 



Belcher. [Very like the adult of T. caurina, Old.] 



11. Terehratiila tiva, Brod. Bay of Tehuautepec, Guatemala; 10-12 fms. sandy 



mud, on dead bi\alve, Copt. Dare. Mus. Cum. and De Burgh. [The 



analogue of T. vitrea, Med.] 



16. Ttrebratida {T(rebratuUna) Jtiponica, Sby., = T. angusta, Ad. and live. Corea, 



Japan. "Represents T. capid-serpentis, and probably the same." 

 23. Tertbrutida physe»ia, Val., MS. (unique), Coquimbo. Gaudichitud, 1S33. 

 May be a colossal, broadly inflated var. oi ylobosa. 



C. Orbimla Cumitigii, Brod. [Besides information in Kep. pp. 183, 244, is given] 

 Is. Cana, Guatemala ; sometimes 6-18 fms., Cumittif. O. strii/(d(i,iinnl., 

 is a less-worn state of this species. [The type-specimens of JJiscinu stri- 

 gata in Brit. Mus., on Pecten ventricosus, appear very distinct, and aie 

 unusually shell}- for the genus.] 



excluding Ziziphinus {=CalHostoma),Mr.'ReeYe"contTiveBto\t\&ce" in TVoc^m* animals 

 shown by the opercula to belong to different subfamilies, as though we knew no more tliuu 

 ill Lamarck's days j his motley group containing Imperator { = Stella, H. and A. Ad.)4- 

 Lithopoma -\- Gnildfordia + Chri/soxtoma -\- Bolma -f- Modelia -}- Polydonta -\- Tectut-\- 

 Pomatdax-\-Astralium-\-Pachifpoma-\- Uvanilla. Also in a family the genera and species 

 of which are mainly recognized by the base and mouth, most of the shells are only figured 

 on the back. Very often the characters of the aperture are not even stated. Remarkable 

 liberties are, moreover, sometimes taken with geographical facts, to the great astonishment 

 of' Americans, who expect even their schoolboys to avoid such statements as at sp. 57, Tr. 

 diminidiviis, Rve., " Oahu Islands;" and at sp. 1, Lingula ovalis, Rve., "from W. II. 

 pease, Esq., residing at Honolulu, one of the Sandwich Islands." 



* P. conipta is a distinct Califomian species ; its Pvarieties pass into pulla. If Mr. 

 Reeve cau be followed in uniting topulla, ptdchella. Reel. •,-\-affinis-\-tesseUata-\-pulchena 

 -^concinna, C. B. Ad. ;-l-/ei»uV*, ¥h\\. ; + intermedia, 9iCHCc\n;-\-Capensis, Dkr. ;4-«'/o«- 

 gata, Krauss, Gould's species should join this goodly company, rather than perforata. 

 The same standard of union followed among the large shells would greatly lessen the size 

 of this costly work. 



t So is Phasianella rubra. Pease MS., sp. 18, which belongs to Alcyra, A. Ad. ; allied 

 to Euvliclutt 



54 



