107 



Hah. in Peruvi'a. (Huantajaya near Iquiqui.) 

 Found under stones on hilJs 2500 feet above the level of the 

 sea.— W. J. B. 



BuLiNus DERELicTus. Bul. testil ventricoso-pijramklaH, albidd, 

 subdiaphtnd ; anfractibus 6 lomjitudinaUter striatis ; apice so- 

 li flu/o, suhpapUlari ; ujubilico mar/no : long. -,V> lat. ^ poll. 



Ilab. ad Cobijam Bolivise. (Puerto del Mar.) 



Found unprotected on flat rocks without soil or verdure : all 

 was desolate for a league around W.J. B. 



BuLiNus VARiANS. Bill, tcstd eloiigatd, subnitidd, castnned, ma- 

 cvlis striympie albis varid ; anfractibus 8 longitudinaliter striatis ; 

 mnbiiico mediocri : long. 1 ,V, lat. -,^-r poll. 



Hub. in Peruviae montibus. (Truxillo.) 



A whitish band may be traced at the upper part of each whorl next 

 to the suture, and another at the base of the body- whorl. But this 

 species varies so much in its markings, that hardly tv.'o individuals 

 are alike. Some are also rather more ventricose than others. 



Found on the same species of Aloe and in the same places with 

 Bul. pitlchcllus. — W. J. B. 



BuLiNUS Tigris. Bul. testd cylindrico-fusiformi, nitidd, subglabj-d, 

 fidvo-albente longitudinaliter custaneo strigatd ; anfractibus 7 

 longitudinaliter striatis; columelld subcallosd ; umbilico tantum 

 non obtecto : long, l-f, lat. ^ poll. 

 Hub. in Peruviae montibus. (Truxillo.) 



This diflers from the preceding in many points. The body-whorl 

 is of considerably greater length in proportion, and the aperture is 

 consequently much longer and more acute at the upper part. 

 There is somewhat of a callosity on the columella, and the umbilicus, 

 which is small, is almost hidden by the reflected inner lip. 

 Found on bushes. — W. J. B. 



*** Labio exteriore subreflexo. 

 BuLiNus Proteus. 1. Bul. testd ovato-acutd, sordide albidd fulvo 

 maculatd ; anfractibus 6 creberrime longitudinaliter granuloso- 

 striatis, ultimo maximo, ventricoso ; utnbilico magno ; epidermide 

 tenui: long. 11, lat. l-^ poll. 



2. Fflr. granulisstriisquepauUoelevatioribussubalbidis: Ion? 1-rV 

 lat. 1 poll. ^ "" 



3. Far. albida fasciis castaneis : long. 1|, lat. | poll. 

 Hab. in Peruviae montibus. (St. Jacinta, near Samanco.) 



4. P^ar. nana, albida fasciis interruptis sordid^ castaneis : long. 

 IVo-Jat. -rVpoll. 



Hab. in Peruviae montibus. (Pacosmayo.) 



Obs. After a careful examination of numerous individuals, I am 

 unable to detect any specific characters which may be safely relied 

 on to separate the four varieties above described. There is indeed 

 a considerable difference in size between the first and the last j but 

 I have seen many instances where food and locality have had as 

 much effect in the development of the volume of a shell, as they 



