298 Messrs. Parker and Jones on 



(concretionary?) shell-structure. Fig. 5, VaginuUna cretcp 

 {bracliyarthra) , seems to be (if really flat, as is probable) V. 

 lonr/a (Cornnel). Fig. 6. Textilaria striata^ Ehr. 1838 ; more 

 fully illustrated in pi. xxxii. i. figs. 4 «, 4 J, 7, and ii. 6, 18, 

 from the Missouri and Mississippi Chalk. Fig. 7. A broad 

 individual of T. striata. Fig. 8, Text, ampliata (" T. aspera, 

 1838"), is a young T. gihlosa^ D'Orb., with roughish shell. 

 Figs. 9 & 10, Text, glohulosa'^ (1838), arrested T. gihhosce. 

 Figs. 11, T. leptotJieca, and 12, T. globulosa ampliata^ are in- 

 dividuals of T. gihhosa. Fig. 13, Loxostomum curvatum^ is 

 an arcuate T. agglutinans^ the later chambers of which have 

 the aperture higher and higher up, thus passing, in its quasi- 

 generic character, from Textilaria proper into Vulvulina. 

 Indeed it may be the young of Ehrenberg's Lox. anglicum 

 (fig. 19 of the same plate), which is a rather narrow and neat 

 Vulvulina pennatula (^dii&c\\) . Fig. 14, Grammostomum sca- 

 hrxim^ seems to be only a small coarse-shelled T. agglutinans^ 

 D'Orb. Figs. 15 & 16, Gr. polytrema^ is Virgulina 8chrei- 

 hersUi Czjzek. Fig. 17, Gr. acideatum^ is a variety of Ver- 

 neuilina triquetra (Miinster), with aculeate edges, like V. spi- 

 nulosa, E-ss., Denks. Akad. Wien, 1850, vol. i. pi. 47. fig. 12 : 

 it is seen from one of its three flat sides. Fig. 18, Textilaria 

 aculeata is a small rough T. agglutitians^ with flattish cham- 

 bers, such as D'Orbigny has named T. suhangulata. Fig. 19. 

 See above. Fig. 20, Pro7-oporus cretce, is Polymorphina 

 Tliouini.1 D'Orb. (see the " Monograph on Polymorphina " f 

 by Brady, Parker, and Jones, Linn. Soc. Trans. 1870, vol. 

 xxvii. p. 232). Figs. 21, Bigenerina cretce, and 22, B. acan- 

 thoj)ora, are also P. Thouini [loc. cit.). Fig. 23, B. apiculata., 

 is P. compressa, " Mon. Polym." p. 227. Fig. 24, Loxostoma 

 vorax^ is also Polym. conijiressa, and should be added to the 

 synonyms in the " Monograph Polym." p. 227. 



Figs. 25, Loxostomum tumens^ and 26, Lox. aculeatum^ are 

 slightly differing individuals oi Ileterostomella aculeata (Ehr.). 

 This may be described as a prickly loose-grown Textilaria^ 

 which, having ceased to grow in the typical manner (with a 

 double row of alternating chambers), has continued with a 

 single row (as a Bigenerina) ; and these have not only got ter- 

 minal instead of lateral apertures, but have become lipped as 

 in Sagrina rugosa^ D'Orb. (1840). D'Orbigny, however, 

 had applied the name " Sagrina " to a Uvigerine Foraminifer 



* WeU figured in Eley's ' Geology in the Garden,' 1859, pi. 2. fig. 9, 

 pi. 9. fig. 9 c and in figs. 39 & 39 c, of pi. 7; p. 194 &c. Geol. Mag. 

 vol. ix. p. 124. 



t Some of Ehrenberg's figures quoted in this Monograph as Poly- 

 morpMnfP, we find, on fuller consideration, to be Virgtdince &c. 



