283 MR. A. GARRETT ON THE TERRESTRIAL [Mar. 1, 



that part of the shell a granulated appearance. The transverse lines 

 are frequently evanescent on the middle of the body-whorl. There 

 are from two to three folds on the parietal region, the upper one 

 small and granuliform. There may be observed one to three 

 lamelliform plications in the palate, and sometimes several raised 

 white parallel striae. Length 9-10 millim. 



M. granifer, Mousson, an East-Indian species, is verv closely 

 allied to, if not identical with, M. striatus. 



9. Melampus adamsianus, Pfeiffer. 



Melampus adamsianus, Pfeiffer, Proe. Zool. Soc. 1854, p. 121 ; 

 Syn. Auric, no. 12; N^ovit. Conch, i. p. 18, pi. 5. figs. 17-19; 

 Mon. Auric, i. p. 24 ; Gassies, Faun. Nouv. Caled. p. 57, pi. 7. 

 fig. 2; Button, Cat. Moll. New Zeal. p. 576 ("ex Pfeiffer ") 



Tralia adamsiana (Pira), H. <k A. Adams, Gen. Moll. ii. p. 244 



Melampus variabilis, Gassies, Faun. Nouv. Caled. p. 65, pi. 6 

 fig. 8 ; Pfeiffer, Mon. Pneum. (Auric) iv. p. 315. 



Melampus cinereus, Gassies, Journ. de Couch. 1867, p. 62 

 Pfeiffer, Mon. Pneum. (Auric.) iv. p. 314. 



Melampus avenaceus, Mousson, Journ. de Conch. 1870, p. 134 

 1871, Tar. vavaoensis, p. 21. 



Melampus angustus, "Mousson," Schmeltz, Cat. Mus. Godeff. iv. 

 p. 68; Paetel, Cat. Conch, p. 114 (juvenile). 



A small and very variable species, 7 to 10 millim. long, and of 

 various colours — light or dark chestnut, luteous, fulvous, cinereous, 

 frequently ornamented with bands and lines of a chestnut colour on 

 a pale ground or pale bands on a dark ground. The shape varies 

 from oblong-ovate to subcylindrical ; surface smooth, shining ; base 

 with oblique incised striae. Spire short or elongate, acute, obscurely 

 radiately plaited or grooved. Parietal region with from one to four 

 plications, the posterior two when present granuliform. Columellar 

 fold more or less continuous with the peristome. The variety 

 vavaoensis is common in the Viti group, associated with the type, 

 into which it gradually intergrades. 



Specimens occur in great profusion just above high-water mark in 

 sheltered places. Dr. Graffe found it in the Tonga group and it 

 is abundant in New Caledonia, whence I have received numerous 

 examples labelled M. adamsianus, M. cinereus, and M. variabilis. 

 The New-Caledonian shells exhibit the same variation as the Viti 

 shells, some of which have the spire so much elongated that they 

 might easily be mistaken for a distinct species ; but having carefully 

 studied several thousand specimens collected in the latter group, I 

 find the character individual only. The number oi plications in the 

 aperture cannot, except in certain species, be relied on as a specific 

 character. It was first described from specimens in the Cumingian 

 Museum, and the habitat "New Zealand" is probably erroneous. 

 Mr. Button, in his Catalogue of New-Zealand Mollusca, merely 

 repeats Pfeiffer's description. Von Martens does not include it in 

 his list of New-Zealand shells. 



