150 
Is’^ATJTILOIDEA. 
I have much pleasure in namieg this fossil after my friend and 
fellow-worker, Mr. G. C. Crick, Assoc. ll.S.M., F.G.S., of the Geo- 
logical Department in this Museum. 
Horizon. Carboniferous Limestone. 
Locality. Ireland ? 
Eepresented in the Collection by a single example. 
Temnocheilus concavus, J. de C. Sowerhy, sp. 
1840. JSautilus concavus, J. de C. Sowerhy, in Prestwick’s “ Geology 
of Coalhrookdale,” Trans. Geol. Soc. ser. 2, \ol. v. pt. iii., Expla- 
nation of Plates and lYoodcuts, pi. xl. f. 6. 
1849. Nautilus concavus, d’Orhigny, Prodr. de Paleont. Stratigr. vol. i. 
p. 111. 
1852. Nautilus concavus, Giehel, Fauna der Vorwelt, Band ii. Abth. i. 
p. 167. 
1854. Nautilus concavm, Morris, Cat. British Foss. 2nd ed. p. 307. 
1863. Nautilus concavus, F. Koemer, Zeitschr. der Deutsch. geol. 
Gesellsch. Band xv. p. 576, Taf. xiv. ff. 7 «, 7 h. 
1870. Nautilus concavus, F. Roemer, Geologie von Oberschlesien, p. 83, 
Taf. viii. ff. 21, 22. 
1878. Nautilus concavus, Ahich, Bergkalkfauna aiis der Araxesenge 
bei Djoulfa in Armenien (Geol. Forschung. in den kaukasischen 
Landern), p. 18, Taf. iii. ff. 3, 3 «, 3 h, 4. 
Char. Sowerhy gives the following short description of this 
species ; — “ Suhglohoso, umhilicated, concave on the front ; septa 
slightly arched ; siphuncle central ; umbilicus large ; aperture nearly 
twice as wide as long. 
“ Length of the aperture 7 lines, width 1 inch. 
“ Diameter of the shell 1 inch 4 lines. 
“ The simple curve of the septa and concave front distinguish 
this species.” 
Remarhs. Most of the examples of this species, both English and 
German (the latter from the Hohenlohe-Grube and Konigs-Grute), 
are casts of the body-chamber, exhibiting scarcely any trace of 
ornamentation, except that in some there are faint lines upon the 
periphery, which indicate a deep sinus in the aperture, and most of 
the specimens have a faint ridge (normal line) along the median 
ventral furrow. 
Horizon. Coal-Measures. 
Localities. Coalhrookdale, Shropshire; Martley, 'Worcestershire. 
Temnocheilus carbonarius, Foord. 
Sp. Char. The bodj^-chamber only is preserved, and makes about 
I of a volution. The shell is similar in form, and evidently closely 
