10 PROCEEDINGS OF THE NATIONAL MUSEUM vol.78 



periphery. Peristome white, protracted at the junction of the outer 

 and basal lip. Interior of aperture pearl gray excepting the dark 

 spiral bands described above. There are many hydrophanous spiral 

 lines and zones which are well shown in our figures. 



The specimen figured, Cat. Xo. 195390, U.S.N.M., is one of 

 four from the Mollendorf collection which came from Lopez, Tayabas 

 Province, Luzon. It has 5.1 whorls and measures — height, 38.8 mm. ; 

 greater diameter, 33.8 mm. ; lesser diameter, 28.7 mm. 



This subspecies stands halfway between Gochlostyla submirahiiis 

 antimonana and G ochlostyla suhmirdbilis daragana in shape. 



COCHLOSTYLA MIRABILIS Ferussac 



This species, like Gochlostyla duhia Pfeiffer, has also been battered 

 from pillar to post and from almost its inception has been made 

 the recipient of a number of subspecies belonging to G ochlostyla 

 persimilis which in turn has been badly confused with what we are 

 here calling Gochlostyla submirabilis MoUendorff. 



In G ochlostyla mirahilis Ferussac the periostracum is almost 

 wanting, the merest film of it, yellowish tinged, is present on the 

 last portion of the shell and on the parietal wall of the aperture. 

 In Gochlostyla persimilis the periostracum is always strongly 

 developed on the last turn, ranging from straw colored to orange. 

 Most writers appear to have considered G ochlostyla miraMlis typical 

 to have lost the periostracum. That this is not the case is vouched 

 for by the fact that the umbilical callus would have glazed over 

 the part occupied by it and thus preserved this intact, which is 

 not the case. 



COCHLOSTYLA MIRABILIS MIRABILIS, Ferussac 



Plate 4, Figures -5-10; Plate o, Figures 1-6 



1821. Helix mirahilis Ferussac. Tab. Syst. Anim. Moll., p. 47. 



1821. Helix miraMlis Ferussac, Hist. Nat. Moc, pi. 31, figs. 4-6. 



1822. Helix galactites Lamaeck, Anim. Sans. Vert., vol. 6, p. 69. 

 1828. Helix fomwsa Wood, Ind. Test., Suppl., pi. 7, fig. 10. 

 1837. Helicostyla galactites Beck, Index Mol.,- p. 37. 



1841. Helix miraMlis Sowerby, Proc. Zool. Soc. Loudon, pp. 1-2. 



1842. Helix decipiens Reeve, Conch. Syst., vol. 2, pi. 163, fig. 3. 



1846. Helix m/irabilis Pfeiffer, Martini-Chemnitz, Conch. Cab., ed. 2, vol. 



1, pt. 12, p. 289, in part; pi. 48, figs. 5?, 6, 7V. 

 3848. Helix mirahilis Pfeiffer, Monogr. Helic. vivent., vol. 1, pp. 220-1, in part. 

 1850. Helicostyla mirahilis Albers, Heliceen, ed. 1, p. 104. 



1850. Helix galactites Chenu, Conch. 111., pi. 3, figs. 16, 16a, 17. 



1851. Helix galactites Deshayes. Fer. Hist. Nat. Mol., vol. 1, pp. 319-20, in part, 



pi. 31, figs. 4-6. 

 1851. Helix galactites Reeve, Conch. Icon., pi. 12, figs. 45a, 45&, 45^. 

 1853. Helix galactites Pfeiffer, Men. Helic. vivent., vol. 3, p. 172, in part. 

 1856. Helicostyla mirab lis Pfeiffer, Malacozool. Bliit., vol. 2, p. 145. 



