200 JR.. Bullen Newton — Miocene Shells from Egypt. 



It remains to be stated that the majority of the specimena in 

 this collection were obtained from various places comprised in 

 a tract of country lying between Cairo and Suez, which are referred 

 to as ' Camps,' each one being numbered and having the following 

 geographical position : — 



Camps. Latitude. Longitude. 



No. 6 29° 57' 40" N. ... 31° 44' 30" E. 



JSTo. 9 30° 10' 15" ... 31° 45' 20" 



No. 19 30° 16' 30" ... 31° 54' 40" 



No. 21 30° 8' 40" ... 31° 56' 40" 



No. 22 30° 15' 30" ... 32° 2' 10" 



The additional localities recorded for two of the species are : 

 W. of Jebel Zait, off the Gulf of Suez, and Jebel Geneffe, near Suez. 



MOLLUSCA : GASTEROPODA. 



Genus TUGURIUM, P. Fischer. 

 Kiener & Fischer: Species Coquilles Vivantes (Calcar, Trochus, etc.), 1880, p. 450 ; 

 Fischer's Manuel Conchyliologie, 1885, p. 760. 

 Type. — Trochus Indicus, Gmelin. 



TUGUEIUM BOHSONI, Sismonda, sp. 

 Phorus gigas, Michelotti : Desc. Foss. Miocenes Italie, Sept., 1847, p. 175, pi. vii, 



fig. 1 (non Trochus gig as, Borson, 1821). 

 Fhorus Borsoni, Sismonda (Bellardi MS.) : Synopsis Pedemontii Fossilium, 2nd ed, 



(1847), p. 50. 

 Tvgurium Borsoni, var. pagodaformis, Sacco : Moll. Terz. Piemonte, 1896, pt. xi, 



p. 27, pi. iv, figs. 4, 5. 



Description. — Testa conica, libera, umbilicata ; anfracttbus planis, 

 infundibuUformibus, basi repanda ; periphceria rotundata ; umbilico 

 parvo ; apertura trigona. (Michelotti.) 



Dimensions. — Height, (about) 40 millimetres ; diameter of base, 

 40 millimetres. 



Some conical limestone casts contained in this collection appear 

 to be referable to this species. They possess about five or six wide, 

 depressed whorls, deeply sutured, of infundibuliform arrangement, 

 and obtusely acute at the periphery ; the base is concave and 

 prominently umbilicated ; surface exhibiting no sculpture. One 

 of the specimens has some foreign material (small bivalve shells) 

 agglutinated to the spire in the neighbourhood of the sntuie. 

 Tliis character, together with its perforated base, would indicate 

 its relationship to Fischer's Tugurhim, in which genus it is here 

 placed. From a comparison of the published figures of tins 

 species, especially those last issued by Sacco, there is little doubt 

 that these Egyptian casts may be safely referred to the Italian 

 species which characterizes the Helvetian division of the Miocene 

 of that country. The Trochus gigas of Borson, at one time confused 

 with this species, belongs to Pleurotomaria. 



Horizon. — Miocene (Helvetian). 



Distribution.— North Italy ; Egypt, between Camps 19 and 22. 

 Coll. Geol. Surv. Egypt, No. 815, Box No. 4c. 



