1. :,..»> \ in the F^rovhice of Granada. 369 



evtfr, appeftr« ta be distinguislied by |>eculiar or characteristic or- 

 gai>ic remains. 



The shelly conglomerate masses that belong to this group are 

 often seen in the form of short intcrrii})ted projecting banks, 

 one of which may be observed near a path road that leads from 

 Malaga to a high hill called El Cerro de los Angeles, about a 

 mile from the town. But the principal conglomerate beds exist 

 several miles up the valley of Malaga, firsts near the village of 

 Alauriaejo) op the road to Alaurin el Grande, and secondly, in 

 the vicinity of the villages of La Pirrara and Arola. A hilly 

 baspd of this conglomerate, in which tertiary shells are met with, 

 extend^ frooi n^i jAlaurinejo to the south-eastern end of the 

 Sierra de Cartama (a short insulated ridge of transition rocks in 

 the central longitudinal course of the estuar^^ of Malaga) About 

 a uiile distant from it, the argillaceous deposit of group 1. forms 

 the banks of a deep ravine at a much lower level than this con- 

 glomerate band, and thus brings nearly into contact the two 

 groups of the tertiary formation, so as to prove their order of 

 superposition. In the high insulated hills of conglomerate near 

 La Pirrara and Arola, I did not observe any organic remains, 

 but the superposition of these beds to the argillaceous deposit 

 of group 1, which may l?e seen near La Pirrara, countenances 

 the belief that they belong to the suj^ei-ior portion of the tertiary 

 formation in the neighbourhood of Malaga. (See Section 4. 

 PI IL) 



The argillaceous deposit, or group 1. of the tertiary beds, 

 has been noticed at Alaurin el Grande. Zoological evidence ex- 

 ists to prove that the superior beds of this formation, or those 

 belonging to group % have also extended as far as this village. 

 Ostrese in great abundance, of the same extraordinary size, and 

 with similar long hinges as those stated to be found in the upper 

 tertiary beds near Malaga, are met with close to Alaurin el 

 Grande on the slope from the base of the Sierra di Mijos to the 

 valley. They are seen in groups in the superior stratum of al- 

 luviun^ about a mile to the east of the village, and it is evident, 

 from their high state of preservation and their position, that 

 they belong to a deposit superior to, and more modern, than 

 that in which the varipus mariae remains described were disco- 

 vered at about an equal distance to the west of Alaurin. In se- 



VOL. XV. NO. XXX, OCTOBER 1833. A a 



