390 Messrs. Jones, Parker, and Kirkby on the 



The synonyms of Trochammina "pusilla are as follow : — 



Serpula pusilla, Geinitz, 1848. Verstein. Zechst. Roth. p. 6, pi. 3. figs. 3-6. 

 Formninites serpuloides, King, 1848. Cat. Perm. Foss. Northuml). p. 6. 

 Serpula ? pusilla, Jones, 1850. In King's Monogr. Perm. Foss. p. 57, pi. 6. 



figs. 7-9; pi. 18. figs. 13 a-e^. 

 Serpula pusilla, Morris, 1854. Oat. Brit. Foss. 2nd edit. p. 93. 

 Spirillina ptisilla, Jones, 1856. In King's Memoir on Irish Permian Fossils, 



Joum. Geol. Soc. Dublin, vol. yii. part 2. p. 73, pi. 1. figs. 12 a, b. 

 Serpula pusilla, Geinitz, 1861. Dyas &c. p. 39, pi. 10. figs. 15-21, & pi. 12. 



fig.l. 

 Serpula pusilla, Bolsche, 1864. Neues Jahrb. Min. &c. for 1864, p. 667. 



§ VIII. Many Trochammince [Tr. gordialis and Tr. cha- 

 roides) from the warm seas resemble Tr. pusilla j but more 

 especially in its earlier stage of irregular coiling ; and we find 

 individuals of this stage of growth or knot-like condition in 

 the Permian limestone also (see figs. 7, 8) ; and we can refer 

 to them as Tr. gordialis^ the synonyms of which are as fol- 

 low : — 



Trochammina {squamatd) gordialis, Jones & Parker, 1860. Quart. Joui'u. 

 Geol. Soc. vol. xvi. p. 304. {Spirillina pusilla, Jones, is referred to in the 

 footnote at p. 305.) 



Trochammina gordialis, Parker & Jones, 1862. In Carpenter's lutrod. 

 Foram. p. 141. 



Trochammina squamata, var. gordialis, Parker & Jones, 1865. Phil. Trans, 

 vol. civ. p. 408. (Reference is here made to the similarity of the so- 

 called Serptda pusilla.) 



Trochammina jrroteus, Karrer, 1866. Ueher das Auftreten von Foramini- 

 feren in den alteren Schichten des Wiener Sandsteins (Sitzungsb. Akad. 

 Wien, vol. lii.), p. 3. figs. 1-8. (Including Tr. gordialis, Tr. charoides, 

 Tr. squamata, and intermediate conditions.) 



Trochammina squamata, var. gordialis, Parker, Jones, & Brady, 1866. 

 Monogr. Foram. Crag, p. 26. (Reference is here made to Spirillina pu- 

 silla, Jones, and Miliola ? pusilla, Kirkby.) 



§ IX. In fig. 9, PI. XIII., we see broad short whorls making 

 a shell that somewhat reminds us of the Biloculine Miliolce. 

 Still more neatly and compactly arranged, the folds constitute 

 a flattish and nearly oblong shell (fig. 10), or a broadly oval 

 and almost biconvex shell (fig. 11), or even a circular shell 

 with sunken faces (fig. 12). In figs. 13 & 14, tlie exposure of 

 a circumscribed oval portion of the older whorls in the middle 

 of the side-faces of the subovate shell gives it a particularly 

 Milioline likeness, reminding us of Trilocidina and Quinque- 

 loculina. Hence one of us thought it likely to prove a Miliola^ 

 and referred to it as M. ? pusilla ; but now we give to this 

 variety the name of Trochammina miJioloides. The nearest 

 published drawing is Herr Karrer^s fig. 2 of Tr. proteus ; and 

 indeed it is essentially the same, though showing a greater 



