ON THE SHELL-BEARING DEPOSITS IN KINTYRE. 397 
Cristellaria rotulata, Zam. Rotalia orbicularis, D’Orb. M.R. 
o cultrata, D’Orb. R. »  papillosa, Brady. 
_ gibba, D’Orb. M.R. | Nonionina orbicularis, brady. M.C. 
as arcuata, D’Orb. R. x umbilicatula, Mont. R. 
crepidula, Fech. 4 depressula, VW. dé J. M.C, 
Polymorphina compressa, D’Orb. 5 Boneana, D’Orb. M.C. 
‘ lanceolata, Rewss. 4 stelligera, D’Ord. R. 
M.R. jects macella, Pd M. C. 
+. sororia, Reuss. A striato-punctata, 
2 oblonga, D’Orb. M.C. EE Ee 
@ ovata, D’Orb. is arctica, P.& J. R. 
Urigerina pygmea, D’Orb. ‘Discorbina polystomelloides, P. & J. 
Globigerina bolloides, D’Orb. R. a globularis, D’O7b. RB. 
Patellina corrugata, Will. Rhabdamina cornuta (7), Brady. 
Truncatulina lobatula, W.dé7. M.R. | Planospirina exigua, Brady. R. 
Pulvinulina Karsteni, Reuss. C. Psammospheera fusca, Schulze. R. 
V. EcHINODERMATA. 
Ray and disc plates of starfish. 
Spines of Spatangus. 
» Kchinus. 
Remarks. 
In some of the parcels from these various depths the gravel was 
mostly angular ; in others, more or less water-worn. <A good deal of it 
might be called a coarse sand, but some of the stones were about the size 
of ordinary gooseberries. No striation was observed on any of them. 
By whatever means the shelly clay was laid down, it will be seen from 
the following Table that there had been at least three distinct changes 
in the deposition of the sediment. In the lowest division, including the 
depths 97 up to 94, the dry clay was of a light brown colour, friable and 
easily broken. In the next section, including depths 92 feet 9 inches up 
to 87 feet, the dry clay was of a dark bluish slate colour, hard and diffi- 
cult to break. The uppermost section, including depths 85 to 76 feet, 
when dry, was of a light brown. The clay from 76 down to 79} feet was 
hard, and disintegrated slowly ; from 80 to 85 feet it was less hard, and 
disintegrated more freely. 
Tt is not without interest to note the variations of the colours and 
hardness of the clays as they are built up one above another, as well as 
the number of species of the organisms in the different zones, together 
with their living distribution. 
There are three species of Foraminifera in this deposit that have.not 
been found in Recent deposits in the British Isles, viz., Discorbina poly- 
stomelloides, Polystomella macella, and Rotalia or bicularis. All three in 
the fossil state are, so far as T know, only found in Scotland in the 
shelly clay deposits of Kintyre, not rarely but frequently ; and I may 
say that Kotalia orbicularis is a prevailing species in the deposit. 
Their southern widely distributed living habitats are (1) Discorbine 
polystomelloides, at three different stations among the islands south of 
New Guinea, namely, off Booby Island in 6 to 8 fathoms, off Wednesday 
Island and Flinders’ Passage, and the Australian coral reefs. 
(2) Polystomella macella, northern temperate zone, the Mediterranean 
and Adriatic being apparently its northern limit. As fossil it has been 
