89 
GRYPHiEA Maccullochii. 
TAB. DXLVIL— figs. 1, % & 3. 
Spec. Char. Obovate, oblique, gibbose ; beak pro- 
duced, much incurved ; posterior lobe more or 
less distinct ; the front rather angular. 
Intermediate between Gryphaea dilatata, t. 149. and 
G. incurva, t. 112; it also bears some resemblance to 
G. bullata, t. 368. in its young state ; but as it is much 
shorter than the first, so it is longer than either of the 
latter, and much thicker than the last in all stages of 
growth. The division of its surface into two lobes is 
very variable. 
Collected in Pabba, Scalpa, Carsaig in Mull, and 
several other places, by R. I. Murchison, Esq. and 
named by him after the eminent geologist Dr. Mac- 
culloch, who first noticed the beds in which this fossil 
is contained. See a Description of the Western Islands, 
vol. i. pages 296, 320, and 562.— It is much to be re- 
gretted that the fossils there mentioned are not more 
fully described, especially since two species of Gryphite 
are alluded to. 
This Gryphaea is also found in England, and belongs 
probably to the Lyas beds ; but I have only met with 
specimens from Braunston in Northamptonshire, where 
they were found, in what is called a gravel-pit, by Miss 
Baker, from whose collection figs. 1. and 2. are drawn. 
Fig. 3. represents a small one from Pabba. 
