260 Messrs. Parker and Jones on 



In treating of Fusulina in the Ann. Nat. Hist. ser. 3, vol, 

 viii. p. 166 (1861), we regarded it as an Alveolina- but Dr. 

 Carpenter's researches have settled its higher rank as a hjaline 

 and tubuliferous shell near Nonionina and Niimmulina*, as 

 intimated by D'Orbignj. Prof. Ehrenberg seems to have 

 adopted the terms ^^ Alveolina'''' and '"'• Borelis'''' for the long and 

 short FusulincB respectively f. If arranged in order, according 

 to the amount of compression or the diminishing length of 

 axis, the FusulincB figured in the plate before us would stand 

 thus : — 



-, » 1 T . ^ rr c\ -\ iTusiform. The same as 



1. Alveolma prisca. x. D. 7-9. 1 J tt.- i -, tp /• 



c, J Kir] i^ischers rusuiina cy- 



2. montipara. X. C. o, «, ». J ? • 7 ■ i e^ 7 ^ 



^ ; 7 ^ { lindrica &XiQ. r .aejjressa, 



3. prisca? xi. 1, 2. Long barrel-shaped. 



4. Borelis constricta. x. D. 5, 6. Cylindrical, but con- 



stricted in the middle. 



5. princeps. X. C. 1-4. Ovoid. 



6. sphteroidea. x, D. 1-4. 1 Oblately spheroidal ; 



7. palfeosphasra. XI. 7, 8. J barrel-shaped. 



8. • labyrinthiformis. xi. 3. Deeply oblate ] thick 



disk with rounded edges. 



9. palgeophacus. XL 6. Biconvex, with flattened 



faces ; a disk with attenuate margin. 



10. paleeophus. xi. 1-5. Lenticular. 



Thus, with every possible gradation of shape between them, 

 the longitudinal section of the first is of the same outline as the 

 vertical cross section of the last ; whilst all present the same 

 spiral arrangement of chambers (subquadrangular in section) 

 when exposed by a median section across the long specimens, 

 and parallel to the two faces in the discoidal and lenticular 

 forms. 



Fusulina cylindrica has been found in the Carboniferous 

 rocks on the Ohio:}: and of Upper Missouri (Marcou, ' Geol. Map 

 U. S. and Canada,' text p. 36, 8vo, Boston, 1853; and Meek 

 and Hayden, ' Palgeontol. Upper Missouri/ 1865, pi. i. figs. 



* 'Introd. Study Foram.' 1862, p. 304 &c. ; 'Month. Microscop. Journ.' 

 1870, p. 180. 



t We are obliged to come to this conclusion, although our respected 

 author had a decidedly difi'erent opinion in 1842. In the Monatsb. 1842, 

 p. 274, he states that " 1. Melonia (BorcUs) ^pliceroidea, 2. B. constricta^ 

 3. B. princeps (2 lines long), and 4. A/ceoIina prisca (1 line long, fusiform), 

 occurring mixed up together in the white Carboniferous Miliolite-limestone 

 of the Oneida Lake, are ver^^ different as to species from the evidently 

 allied Fiis^dince of Russia." 



\ De Verneuil, ' Sillinian's Amer. Journ.' ser. 2, vol. ii. 1846, p. 293 j 

 Bullet. Soc. Geol. France, ser. 2, vol. iv. pp. 682, 684, & 708. 



