146 BULLETIN: MUSEUM OF COMPARATIVE ZOÖLOGY. 
It is not necessary to repeat the details, elsewhere stated in this re 
port, of how the original gravel beds of Barrett at Bowden became the 
“Yellow Limestones” of Etheridge and Duncan and Wall through their 
miscorrelation by the latter with the entirely different “ Yellow Lime- 
stones” of Brown in the western part of the island, which we have de- 
scribed as the Cambridge beds and “ White Limestones ” of some othet 
writers. By easy stages this error grew into a great chain of misinter- 
pretations. Through Etheridge, Barrett's conglomerates became * an 
outcrop at the base of the White Limestone” ;* next the “ Miocene a 
and the “ Yellow Limestone," ? as contradistinguished from the “White 
Limestone," then the “Miocene Limestone” of Woodward,’ and finally 
the White Limestone, in general, of the whole Antillean region. It wa 
in this manner, through literary imitations, that the restricted mollusca” 
fauna of a single bed of Jamaican gravel became the fauna of the White 
Limestones. 
Guppy * refers back to the articles above cited, and also to the paper 
of Duncan and Wall,’ in which, as we have previously shown, the rela 
tions of the beds are erroneously given, and wrongly states that «ihe 
formation from which the Mollusca to be described consists of shale’ 
sands, and marls exposed in several parts of Jamaica.” * 
Concerning the localities of a few Miocene fossils identical with the 
Bowden forms which have been accredited to “ Clarendon " and “ Upp 
Clarendon,” it can be stated that these probably came from a point op 
the seacoast at Round Hill, near Bath, in the extreme southwest corner 
of the district of Vere, the fossils of which, collected by Sawkins, were 
said by him to be “nearly all the same genera and species as thos? 
found at Bowden, Port Morant, St. Thomas-in-the-East."" The refer” 
ence to “Upper Clarendon ” was no doubt an error originally made bY 
Etheridge in citing the field workers. The only allusion made by the 
latter concerning this locality was in connection with the occurrence 7 
older formations. 
Dall has lately published à paper? which belongs to a more roce! 
1 Jamaican Reporte, p. 311. 
2 Tbid., p. 311. : 
8 The Geologist, London, 1862, Vol. V. p. 873. 
4 Quart. Jour. Geol. Soc. London, 1866, Vol. XXII. pp. 281, 282. 
5 Ibid., 1865, Vol. XXI. pp. 1-14. 
6 Op. cit., p. 282. 
7 Jamaican Reports, pp. 162, 163, 
8 Descriptions of Tertiary Fossils from the Antillean Region. Proc. U.S: 
Mus., Vol. XIX. No. 1110, Washington, 1896, 
yat 
