380 Mr. H. J. Carter on the Fossil Foraminifera of Scinde. 



Alveolina, D'Orb. 



" 3. Fasciolites elliptica, Park." (Ann. Nat. Hist. /. c. p, 171). 

 — Alveolina elliptica, D'Orb. (D'Areh. and IJaimc, p. 349). 



Largest size. — Length ^ inch ; breadth T : V inch. 



Loc. Lukput, in Cutch. Scinde, in many parts. Valley of 

 Kelat (Dr. Cook). Bolan Pass (Dr. Leith). 



Associates. — Orbitolites, on the south-east coast of Arabia 

 (misquoted " Orbitoides" in D'Arch. and Haime, p. 349). Or- 

 bitolites in abundance, and a small Nummulite (likciV. kelatensis) 

 belonging to the Striata, on the Buran river, in Scinde. With 

 N. exponens, N. biaritzensis, and Orbitoides dispansa at Lukput, 

 in Cutch. With Nummulites and Orbitoides in the Valley of 

 Kelat. 



Obs. — The typical structure of this Foraminifer I have given 

 in Ann. Nat. Hist. vol. xv. p. 99, since which I have received 

 much larger specimens. The largest elliptical form that I have 

 seen was brought to me from Lukput, in Cutch ; the next in size 

 from the valley of Kelat. Both are nearly of the same size, and 

 equal in dimensions to that given by Sowerby (Grant, Geol. 

 Cutch, Trans. Geol. Soc. Lond. vol. v. 2nd scr.). At Tatta, in 

 Scinde, a great bed of the spheroidal form [A. spheroidea) exists. 

 At Hydrabad, on the Buran River, and in many other parts of 

 Scinde, a small, narrower, elliptical variety is more or less pre- 

 sent. On the south-east coast of Arabia, the Melanoid form {A. 

 melanoidea) occurs with Orbitolites, as above stated. 



Here, again, a great variety in the same species of Foraminifer 

 appears to me to occur. Thus, at Lukput, the Alveolina is 

 X inch long by -^ broad, and rounded at the ends. At Kelat 

 the largest is about the same size, but pointed at the ends. All 

 the elliptical Alveolince about Hydrabad and many other parts of 

 Scinde appear to be but diminutive forms of the A. elliptica of 

 Lukput, although they seldom exceed in length even the breadth 

 (viz. f-rj inch) of the Lukput one, with -i| inch for the short 

 diameter; while the spheroidal forms with the same length 

 (viz. ~j inch) appear to pass into the elliptical forms on one 

 side, and the Melanoid on the other. So that if all these sizes 

 were found together in one bed, they could hardly be considered 

 otherwise than as varieties of one species ; nor is there in their 

 separation anything to oppose this, beyond the prevalence of the 

 spheroidal, the diminutive, narrow, elliptical forms, and the 

 large size, almost exclusively, in their respective localities. The 

 late Mr. Loft us found one in Persia 3 inches long and 1^ inch 

 broad (Ann. Nat. Hist. 1860, vol. v. p. 182). Thus Alveolina 

 presents another instance among the Foraminifera of great va- 



