196 Messrs. Parker and Jones on 



Textilaria americana (" 1843, pp. 398, 429"), is a variety of 

 T. striata^ with the outer margins of the younger and larger 

 chambers more or less produced and aculeate. Fig. 4 h, T. 

 striata^ is the early portion of T. americana, simply T. striata 

 Avith pores in the fine furrows*. Fig. 5, T. missouriensis, is 

 2\ (jibhosa becoming laterally aculeate, as in fig. 4 a, but 

 without striffi. Fig. 6, T. proroconus, is simply T. gihhosa 

 with bored holes. Fig. 7, T. americana (?), young, is the same 

 as fig. 4/>, with thicker shell. Fig. 8, T. globulosa, is a small, 

 stout, oblong T. gihhosa. Fig. 9, T, euryconus, is a much 

 larger T. gihhosa. Fig. 10, I'.gomphoconus, is a neat, narrow, 

 tapering T. gihhosa. Fig. 11, Grammostomum americanum^ 

 is Virgulina Schreihersii. Fig. 12, Gr. validum, is a small, 

 stout, squarish TextiWria of the gihhosa type. Figs. 13, 14, 

 Spiro'plecta americana {^^ HeteroJielix, 1843, p. 429"), is the 

 same as 4 a, excepting that the first segments have a spiral 

 growth. This variation is common in the Textilaridat, and, 

 like analogous differences in growth, has been accepted as the 

 basis for subgeneric division. 



Figs. 15, Fhanerostomum porulosum, fig. 16, Ph. dilatatum, 

 figs. 17 & 18, Ph. lacerum, fig. 19, Pk. keve (small and round), 

 and fig. 20, Ph. quaternarium, are stages and conditions of 

 Glohigerina hirsuta, D'Orb., a subdiscoidal variety of Gl. hul- 

 loides, which is extremely acerose, and has very wide septal 

 apertures. This is the Glohigerina that abounds in the Red 

 Sea and Indian Ocean ; it is often outspread and very prickly, 

 sometimes having its apertures closed over with the projecting 

 and interlacing needles. Fig. 21 , Rotalia glohulosa-iyrotolepta, is 

 a small arrested ox j om\g Planorhulina vulgaris {PI. glohulosa). 

 Fig. 22, Phanerostomuni liispmlidum (small and roughish), 

 fig. 23, Ph. hexaleptum (small and smooth), fig. 24, Pli. asperuni 

 (tubcrculate), fig. 25, Ph. senarium (aculeate), fig. 26, Planu- 

 lina glohigerina (large and tuberculate), fig. 27, Ptygostomum 

 senarium (small and aculeate), fig. 28, Pt. (pdnarium (small 

 and smooth), fig. 29, Phanerostomum hispidulum (small and 

 tuberculate), fig. 30, Ph. dilatatum (aculeate), and fig. 31, Ph. 

 hexacyclus (tuberculate) are also specimens of Glohigerina 

 hirsuta, D'Orb., ' Foram. Canaries,' pi. ii. figs. 4-6. 



Fig. 32, Rotalia lenticidina, is possibly a Crisfellaria ; or it 

 may be a Nonionina ; but its scattered granules constitute a 

 doubtful character, and the position of the septal apertures is 

 not indicated. Other specimens referred to " Rotalia lentica- 

 lina,^^ in other plates, appear to be Planorhulina'. 



* Dr. J. G. Egger figures and describes a Miocene Tvxtilaria like this 

 from Lower Bavaria ; Text, striato-pundata, Eg. ' Neues Jahrb.' 1857, pi. 8. 

 figs. 27-29. 



