SUPPLEMENT. 
379 
upon which the names Orthoceras Eomeri^ Alth, and 0. podolicum^ 
Alth., are written. As I was unable to discover any record of 
these species in any of the Cracovian journals of science, I wrote to 
Dr. Szajnocha, to know if he could inform me where I might find 
them. He very kindly wrote to me, saying that they had been 
mentioned for the first time by the late Professor Dr. Alth in his 
memoir entitled “ Ueber die Palaeozoischen Gebilde Podoliens und 
deren Tersteinernngen ” (Abhandlungen der k. k. Geologischeu 
Keichsanstalt, 1874, Pand vii. Heft i. p. 1). On consulting this 
work I can find no such names as those above cited ; but the 
occurrence of Orthoceras is frequently noted in the enumeration of 
the fossils of the Silurian rocks of Podolia. 
Horizon. Silurian (Upper Ludlow ^). 
Locality. Zaleszczyky, on the Dniester, Galicia. 
Eepresented in the Collection by two examples presented by 
Dr. Szajnocha. 
Orthoceras, sp. 
A single fragment (No. C. 2979) of the septate part of an Ortho- 
ceras, too imperfect to be determined specifically, presents the 
following characters : — Shell straight. Transverse section circular. 
Pate of increase about 1 in 5. Body-chamber not preserved. Septa 
about 2 lines distant from each other where the diameter of the 
shell is 1 inch 5 lines. Siphuncle central, so far as can be ascer- 
tained, the specimen being divided longitudinally in an unequal 
manner. Indistinct traces of the siphuncle are seen, the elements 
of which appear to be bulbous. 
Remarlcs. This specimen bears some resemblance to Orthoceras 
curvescens, Barrande^ (S 3 'st. Sil. de la Boheme, vol. ii. ser. iii. 1868, 
Atlas, pi. cclvi. ; also ibid’, pt. i. texte, pt. iii. 1874, p. 183), but 
it differs in its closer septa and central bulbous siphuncle. 
Horizon. Silurian (Upper Ludlow). 
Locality. Zaleszczyky on the Dniester, Galicia. 
Presented by Dr. Szajnocha. 
Orthoceras intermedium, Barrande. 
1866. Orthoceras intermedium^ (Markliu, MS.) Barrande, Syst. Sil. de 
la Boheme, vol. ii. ser. ii. pi. ccxxx. fi. 4-6. 
^ Fide Prof. Dr. Szajnocha. 
^ At first (1868) called Oimerihj Barrande, who changed it, that name being 
preoccupied by Troost. 
