288 
APPENDIX. 
probably be found allied to local races, and not having anything in common with forms such as Girasia 
of the Indian Region, with which the shell outwardly has resemblance. Only two specimens were 
brought home by Mr. Whitehead. 
LIST OF THE LAND-MOLLUSC A COLLECTED BY Mr. JOHN WHITEHEAD IN 
PALAWAN DURING 1887. By Lieut.-Col. H. H. GODW1N-AUSTEN, F.R.S., &c. 
Hemiplecta densa, var. schumacheriana, Pfr. 
Trochomorpha metcalfei, Pfr. 
Helix (Hadra) traillii, Pfr. 
Helix (Hadra) monochroa, Sowerby, var. palawanensis, Pfr. 
CoCHLOSTYLA SATYRUS, Brod. 
Amphidromus quadrasi, Hidalgo. 
Leptopoma undatum:, Metcalfe. 
Leptopoma sericatum, Pfr., large var. 
Lagocheilus similis, Edgar Smith, 1893. 
This species has been lately described by Mr. Edgar Smith from specimens collected by Mr. Everett, 
which were old. When in perfect preservation, like those found by Mr. Whitehead, it is covered with a 
brown epidermis, having well-displayed transverse regular fine liration and the periphery adorned with a 
strong hairy fringe. The largest specimen measures : maj. diam. 18*75, min. diam. 15*0, alt. axis 7'5 mm. 
Rhiostoma boxalli, n. sp. (Dr. Hungerford, MS.) 
Shell discoid, widely and perspectively umbilicated ; sculpture smooth, being covered with a strong 
epidermis ; colour dark madder-brown, with a few white splotches on the second and third whorls ; 
spire scarcely raised above the last whorl; apex rounded ; suture deep ; whorls 4, round, rapidly 
increasing, the last separated for a short distance from the penultimate whorl; the sutural tube short, 
horizontal ; aperture oblique, circular; peristome double, continuous, the inner simple, the outer 
expanded at right angles to the body-whorl, curved slightly backward on the outer margin,"and with a 
slight nick near the sutural tube. Size : major diam. 24, minor diam. 16*25, alt. axis 5*75 mm. 
This species, which is the first of the genus from this island, was among the Palawan shells. The 
type was obtained by Mr. Boxall near Ivina Balu and was given by him to Dr. Hungerford ; being a 
MS. name I retain it. Its nearest ally is R. iris, Godw.-Aust., of Borneo (described in the P. Z. S. June 
1889, p. 343), as regards the expanded peristome; but the general form differs, it is not so turbinate or 
streaked with zigzag markings as seen in iris. 
The total number of species recorded by Edgar Smith from Palawan (vide the List by the Rev. 
A. H. Cooke, P. Z. S. May 1892, and Edgar Smith, A. M. 1ST. H. May 1893) is thirty, which is now 
increased by three more. It is quite evident that many genera and species still remain to be discovered. 
LIST OF FRESHWATER AND BRACKISH-WATER SHELLS COLLECTED BY 
Mr. JOHN WHITEHEAD IN THE ISLAND OF PALAWAN IN 1887. 
By Lieut.-Col. H. H. GOD WIN-AUSTEN, F.R.S., F.Z.S., &c. 
Melania (Pachychilus) testudinaria, v. d. Busch, var. olivacea. 
This is nearest to the figure of the above species given by Brot in the Conch. Cab. pi. vi. f. 3 h, p. 49, 
in the smooth character of the surface of the shell; it, however, differs very much in coloration, being of 
an olive tint, fading into pale ochre just below the suture, in every whorl. M. testudinaria is recorded 
from Java, Madras, and India. 
