262 MR. E. A. SMITH ON THE MOLLUSCA [May 6, 



yellowish band beneath the suture, the uppermost whorls of the 

 spire (some of which are obliquely costate) being ornamented with 

 squarish spots both above and at the lower part. 



This species is quoted by Dr. Brot from Halmaheira, Solomon 

 Islands, and Wokan, Aru Islands. 



18. Melania ^rea, Reeve. 



Hab. Camiguin Island, Philippines. 



It is not mentioned either by Reeve or Brot from which of this 

 group of islands their specimens were obtained. The two ' Chal- 

 lenger ' shells are smaller than the type figured by Reeve, being 

 only 1^ inch long. One of them has rather more convex whorls 

 than the other, with their upper part comparatively unsculptured ; 

 the latter, on the contrary, being spirally sulcate throughout. Both 

 are more or less coated with a dark reddish earthy deposit. 



19. Melania, sp. 



Hab. Aru Islands. 



Four specimens of a small Melania were collected, which approach 

 very closely to several species, judging from the published figures. 

 They are very like M. ehristobalensis of Brot (Conch. -Cab. pi. 21. 

 figs. 16, 16 a), except that the whorls are shorter. Beneath a black 

 earthy coating they are olivaceous, merely sculptured by lines of 

 growth, and all eroded at the upper part of the spire, leaving only 

 four volutions remaining. As many as thirteen species have already 

 been recorded from the Aru Islands. 



20. Neritina variegata, Lesson. 

 Hab. Aru Islands. 



The colours of the eleven specimens from these islands are, with 

 the exception of a small part of the body-whorl above the columella, 

 entirely concealed by a black earthy deposit. The red patch on 

 the columella is very vivid in some of them and paler in others. 

 The aperture is bluish white outside and greenish within the oper- 

 culum, which corresponds exactly with the description given by Dr. 

 von Martens (Conch. -Cab. ed. 2, p. 99). All the specimens have 

 the apex more or less eroded, but not to the extent of A 7 ", wallisianum, 

 Recluz, which is but a large variety of this species, of which there 

 are specimens in the British Museum from the Fiji and Navigator 

 Islands. 



21. Neritina cornea, Linn. 

 Hab. Amboyna. 



For the distribution of this species see Martens's monograph in 

 the ' Conchylien-Cabinet.' 



22. Neritina brevispina, Lamarck. 

 Hab. Camiguin, Philippine Islands. 



Of the three specimens collected all agree in having the suture 

 bordered below with an interrupted black band, but otherwise are 



