Vol. 57.] PENDLESIDE GEOTJP AT PENDLE HILL, ETC. 385 



sedimentation for a time. Such a condition, however, does not 

 necessarily point to considerable or violent oscillation of the sea- 

 bottom, for without any great alteration of depth, any circumstance 

 such as a bar, or a change in the direction of currents, which would 

 limit the area over which land-detritus was spread, would determine 

 equally well the accumulation of limestones in new localities. 



An analysis of the splendidly-compiled lists of the fauna of the 

 Carboniferous Series of Eife, by Mr. B. IN". Peach,^ demonstrates 

 some interesting facts as to the distribution of species in the 

 Calciferous Sandstone and Carboniferous Limestone Series. 



With regard to the plants, out of seventy-five named forms 

 twenty-five are found only in the Calciferous Sandstone Series, 

 and seven only (four of which have not received specific names) 

 are common to the Calciferous Sandstone and Carboniferous Lime- 

 stone Series. 



The foraminifera seem to be common to both series. 



No porifera or hydrozoa have been recognized in the lower 

 series ; and out of thirty-nine species of corals only four occur in 

 the Calciferous Sandstone Series, two of which are not determined 

 specifically. 



Of echinodermata eleven species are enumerated: one form, 

 Hydreionocrinus glohularis^ is common to both series, in which also 

 crinoid- ossicles (undetermined) are stated to occur. 



Passing on to the arthropod a, which are numerously repre- 

 sented, we find that the majority of forms occur at more than one 

 horizon. 



Of polyzoa, represented by twenty-six named species, only six 

 occur in the Calciferous Sandstone Series, and three of these are not 

 named specifically. 



No brachiopod is confined to the Calciferous Sandstone Series. 

 Of sixty species which occur in the Carboniferous Limestone 

 Series, twenty-four are common to it and the Calciferous Sandstone 

 Series. Prodiictus giganteus is not found in this series. 



About 100 species of lamellibranehs are found in the Calci- 

 ferous Sandstone and Carboniferous Limestone Series of Fife, of which 

 Modiola Macadamii, LitJiodomus carhonariiis, Mycdina sublamellosa, 

 JEdmondia suhplicata, Sanguinolites ahdenensis, Schizodus pent- 

 landicus, Naiadites ohesa, Carhonicola antiqua, Anthracomya Icevis, 

 and perhaps Pecten suhconoides at present seem to be found only in 

 the Calciferous Sandstone Series. 



Fifty-six species of gasteropoda occur, of which it is question- 

 able whether any are confined to the Calciferous Sandstone Series. 



Of the twenty-four species of cephalopoda, only eight are 

 found in the Calciferous Sandstone Series and none of them are 

 confined to that subdivision. 



Judging from the list, certain fish-remains appear to have 

 been, at present, only found in the Calciferous Sandstone Series. 



' 1 ' Geology of Central & Western Fife & Kinross ' Mem. Geol. Surv. Scotl. 

 (1900) pp. 216-51. 



