KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 19. N:0 4. 139 



Litiiolina irregularis Röm. 



Tab. XII, figg. 419—420. 



As I ana unable with any degree of certainty to identify Lituolites deformis (alias 

 ))difformis^^) Lmck. (Encycl. méth. Moll. Test. t. 466, fig. 1; Ann. Mus. 8, t. 62, f. 13) 

 on account of it being less satisfactorily delineated, Roemers designation must be applied 

 to this form, which is of the same shape as Haplophragmium crassum Reuss, an inflated 

 form of Lit. canariensis dOrb., which is to be regarded as a juvenile form of Lit. 

 irregularis. 



Since the difference between this species and its variety, Lit. nautiloidea Lmck. 

 oonsists only in the chambers of the hxtter being subdivided, it is not always possible 

 to refer their different designations by various authors to their proper places in a list 

 of synonyms. 



Our form has a tolerably compactly built shell composed of coarse polished 

 grains of siliceous sand. The aperture is narrow and sometiraes replaced by a 

 number of pores; the chambers undivided. 



It is sparsely met with in the coralline-gravel. 



A) Ii b era: 



a) minus infläta: 



Syn. Spirolina irregularis Röm., 1841, Verstein. nordd. Kreidegeb. p. 98, i. 15, fig. 29. 



« lagenalis Röm., ibid. fig. 28. 



» sequalis Röm., ibid. fig. 27. 



PHaplophrag. irregulare Frics Modell. N:o 4 (an Lit. nautiloidea Lmck.). 

 Spirolina irregularis Rss., 1845, Bohm. Kreicle 1, p. 35, t. 8, figg. 62 — 66, 75. 



Haplophragm. irregulare Rss., 1859, Westphäl. Kreidegeb.; Wien. Ak. Sitz.-Ber. 40, p. 219, t. 11, 



fig. 1. 

 » sequale Rss., ibid. p. 218, t. 11, figg. 2—3; 1862, Nordd. Hils. u. Gault.; Wien. 



Ak. Sitz.-Ber. 1. 46, p. 29, t. 1, figg. 1—7. 

 Spirolina agglutinans dOrb., 1846, For. Bass. tert. Vienne, p. 137, t. 7, figg. 10 — 12. 

 Lituola nautiloidea var. P,\rk. et Jones, 1860, For. Chellaston; Quart. Journ. geol. Soc. 16, p. 453. 



t. 20, fig. 47. 

 Spirolina grandis Rss., 1854, Kreide Osfalp.; Wien. Ak. Dkschr. 7, p. 69, t. 25, fig. 14. 



a simplex Rss., 1855, Tert. Schiclit. nördl. ii. mittl. Deutschl.; Wien. Ak. Sitz.-Ber. 



1. 18, p. 232, t. 2, fig. 30. 

 Haplophragm. rectum Brady, 1876, Carbonif. and Perm. Foramf.; Pal. Soc. 30, p. 66, t. 8, figg. 



8—9. 

 » suprajurassicum Schwag., 1863, Jurass. Sch.; Wiirtemb. Nat. Verein. Jhrhft. 1865, 



p. 92, t. 2, fig. 1. 

 » tuba GuMB., 1868, For. nordalp. Eocän.; K. Bayr. Ak. Wiss. 1. 10. 2, p. 600, 



t. 1, fig. 1. 

 » lituus Kärr., 1861, Marin. Tegel Wien. Beck.; Wien. Ak. Sitz.-Ber. 1.44, p. 450, 



t. 2, fig. 7. 

 Spirolina Humboldti Ess., 1851, Sept. Thon v. Berlin; Zeitsohr. deutsch. geol. Ges. 3, p. 65, 



t. 3, figg. 17 — 18. 

 Haplophragm. Humboldti Ess., 1865, deutsch. Sept. Thon; Wien. Ak. Dkschr. 1. 25. i, p. 119, 



t. 1, figg. 1—4. 



