R. Etheridge, jun.— Carboniferous Tubicolar Annelida. 118 
Dr. Eichwald as occurring in a species which he described under 
the name of Spirorbis Siluricus,' in which incomplete septa are said 
to separate the tube into chambers. Before this, however, Daudin 
wrote as follows regarding Serpula Melitensis: ‘The fossil Serpula 
of Malta (S. Melitensis) also appears to depart from the type of the 
genus, as it is chambered within; it is of importance to ascertain if 
its septa are entire as in Tubipora, or perforated as in Orthoceras.”’* 
More recently, Mr. J. Young, F.G.S.,? has described a similar 
segmentation in a British Carboniferous form, M. (Serpula? ) helic- 
teres, Salter, and in two recent species of Serpula. The diaphragms 
in Salter’s species are said to be complete, and placed at irregular 
distances. 
1. Sp. (Microconchus) pusillus, Martin, sp. 
Conch. (Helicites) pusillus, Martin, Pet. Derb. 1809, t. 52, f. 2 and 3. 
Microconchus carbonarius, Murchison, Sil. Syst. 1839, p. 84, f. D1-D10, p. 88. 
7 e Phillips. Brit. Assoc. Rept. for 1836, pt. 2, p. 87. 
Nautilus, sp., Hibbert, Trans. R. Soc. Edinb. 1836, xiii. p. 151. 
» sp.. Rhind, Excursions around Hdin. 1836, p. 35. 
Spirorbis omphalodes, Portlock, Geol. Rept. Londonderry, 1843, p. 363 (non Goldfuss, 
nec Binney). 
os 5 M‘Coy, Synop. Carb. Lime. Foss. Ireland, 1844, p. 170. 
» sp., Dawson, Quart. Journ, Geol. Soc. 1845, i, p. 326. 
Microconchus, Bronn, Index Pal. Nomen. 1849, p. 725. 
Spirorbis carbonarius, Binney, rig Lit. and Phil. Soc. Manchester, 1852, x. p. 196, 
t. 2, f. 3. 
Gyromices ammonis, Goppert, in Germar’s Verstein. Steinkohlen. von Wettin u. 
Lébejiin. 1853, hett 8, p. 29, t. 39, f. 1-9. 
Serpula carbonaria, Morris, Cat. Eat Foss. 1854, 2nd ed. p. 92 (non Binney, nec 
Giebel). 
Spirorbis carbonarius, Dawson, Gauet. Journ. Geol. Soc. 1854, x. p. 39. 
Gyromices ammonis, Geinitz, Verstein. Steinkohl. in Sachsen, 1855, p, 3, t. 35, f. 1-3. 
Spirorbis carbonarius, Hichwald, Bull. Soc. Nat. Moscou, 1856, No. 2, p. 407. 
Spirorbis pusillus, Kichwald, Letheea Rossica, 1860, i. p. 670. 
» carbonarius, Salter, Iron Ores Gt. Brit. 1861, p. 226-7, t. 2, f. 23, 
Gyromices ammonis, Geinitz, Dyas, 1862, heft 2, p. 133, t. 35, f. 2 and 2a. 
+> »  Lesquereux, American Journ. Sci. 1861, xxxii. p. 195; 2d. ibid. 
1862, xxxiii. p. 208. 
Spirorbis carbonarius, von Roehl, Nat, Hist. Vereins d. Preuss. Rheinl. Verhandl, 
Dorpat, 1864, xxi. p. 43. 
i. 3 Binney, Trans. Manchester Geol. Soc. 1866, vi. p. 42. 
By Pp Lesquereux, [Illinois Geol. Survey Rept. 1866, ii. p. 462, t. 38, 
f. 6a and b. 
Pala@orbis ammonis, van Beneden et Coemans, Bull. l’Acad. R. Bruxelles, 1867. 
Qme. ser. xxiii, p. 390, plate f. 1-4. 
Spirorbis carbonarius, Murchison, Siluria, 1867, 4th ed. p. 302, foss. 83. 
a " Dawson, Acadian Geol. 1868, 2nd ed. p. 182, f. 31a, p. 205. f. 47. 
A F von Roehl, Foss. Flora. Steinkohl. Westphalens, 1868, lief. 1, 
p. 4, t. 16, f. 4. A.A. , 
Gyromices ammonis, Schimper, Traité de Pal. Veg. 1869. i. p. 144, iii. p. 562, Atlas, 
t. 1, f. 15a and 3, 
Spirorbis carbonarius, Peach, Trans. Geol. Soc. Edinb. 1871, ii. pt. 1, p. 82. 
A s Lyell, Student’s Elements of Geol. 1871, p. 386, f. 431 a and 6. 
ie 5 D. Jones, Trans. Geol. Soc. Manchester, 1871, x. pt. 1, p. 37. 
Palzorbis ammonis, Goldenberg. Fauna Sarzepont. Foss. 1877, heft 2, p. 4, t. 2, 
‘ f. 32 and 33a. 
Spirorbis carbonarius, Miller, Cat. American Pal. Foss. 1877, p. 207. 
” Ms Etheridge, jun., Quart. Journ. Geol. Soe. 1878, xxxiv. pp. 3. and 9. 
5 Y- Dawson, Acadian Geol. 1878, 8rd ed. p. 182, f. 31a, p. 205, f. 47. 
1 Letheea Rossica, i. p. 668. 2 Joe. cit. p. 43. 
3 Proc. Nat. Hist. Soc. Glasgow, ili. p. 329. 
DECADE II.—VOL. VII.—NO. III. 8 
