18S3.] FROM THE SOLOMON ISLANDS. 9o5 



millim., and is 35 wide, the aperture being 60 in length. As an 

 instance of extreme variation, I give the dimensions of one of the 

 specimens collected by Mr. Guppy : length 104, breadth 29 1; 

 aperture only 50 long. 



The sculpture of this species does not appear to have been hitherto 

 properly described. In well-preserved specimens the first four 

 whorls are sculptured very much like a fine thimble. A cessation 

 in growth or some imj)ortant change then takes place, which is 

 marked on the shell by an oblique indentation, from which point the 

 sculpture alters, consisting of coarsish lines of growth and irregular 

 spiral strife. The peristome varies in colour, being either white or 

 almost golden, but generally of a reddish-flesh tint. The columella- 

 twist is also variable, in some specimens being much thicker and 

 more contorted than in others. 



21. BuLiMUS (Placostylus) founaki, Hombron and Jac- 

 quinot. 



Hab. Faro Island, Bougainville Straits. 



This species has not been recorded from so northern a locality, 

 and in fact has only been previously obtained at Ysabel Island. 

 The name of this species has (perhaps rightl}!) been changed by M. 

 Crosse to B. hombroni. 



22. BuLiMus (Placostylus) miltocheilus, Reeve. 



Hah. Ugi or Gulf Island, the south-east part of San Christoval 

 and Santa Anna. 



The last island is a new locality for this species, the distribution 

 of which has been given by Brazier in the ' Proceedings of the 

 Zoological Society,' 186!), p. 162. He says that it varies much in 

 size and colour. An interesting variety with a white lip was ob- 

 tained by Mr. Guppy both at San Christoval and Santa Anna. 

 Like B. cleryi this species has the upper whorls finely punctate, 

 and suddenly alters the character of the sculpture after two and a 

 half volutions have been formed. In adult shells this peculiar pitting 

 on the apical whorls is generally more or less obliterated. 



23. Partula, sp. 



A small species of this genus was collected by Mr. Guppy in 

 Treasury Island and at Choiseul Bay, which appears to be very like 

 P. cinerea, Albers. The same species was also obtained at Gulf 

 Island by Mr. Brenchley, and at Guadalcanar by J. Macgillivray, 

 both of whom presented specimens to the British Museum. Albers 

 describes the whorls of his species as " planiusculi," whereas in all 

 the examples under examination they are rather convex, but with 

 this slight exception they correspond very closely with his diagnosis. 



24. Succinea simplex, Pfeiifer, var. 



Hah. " From marshy districts where Taro is cultivated, Treasury 

 and Shortland Islands " {Guppy). 



These specimens are of a darker tint than those described by 



