2 STOLICZKA :— TERTIARY 



Until very recently, there was only one species of tertiary Brachyura known 

 from North-Western India. It was described by Messrs. Haime and d'Archiac 

 from the nummulitic beds of Sind under the names of Arges Mm-chisom and 

 Udwardsii, and was referred by Al. Milne-Edwards, under the former specific 

 name, to his newly proposed genus Galenopsis. The same author also states that 

 certain specimens from the Hala range of Sind are identical with Palceocm-pilius 

 macrocheilns, Desm., a well-known species occurring in eocene deposits through 

 a large part of Southern Europe and also in Egypt. Although it seems unlikely 

 that M. -Edwards should have been mistaken in his identification, I am unable to 

 refer any of our very numerous specimens from those regions to P. macrocheilus, 

 but I will describe a similar species under the name of Palceoc. rugifer. 



The materials which form the subject of the present memoir had been partially 

 deposited for some time in the Museum of the Geological Survey of India : they 

 are those to be noticed from Sind ; partially they were more recently collected in 

 Kutch by Mr. A. B. Wynne, who had charge of the geological survey of this 

 province. The stratigraphic position of the beds from which the fossils have been 

 derived will be found discussed by Mr. Wynne in his report on the geology of 

 Kutch, published in the Memoirs of the Geological Survey of India. 



Besides the six species, which I shall describe in greater detail, I would only 

 draw attention to some interesting fragments of two other Brachyura. They are 

 not sufiB.ciently perfect to give distinctly recognizable characteristics of the species, 

 but they may serve as a guide in further search after these interesting fossils. 

 I have therefore given a few illustrations of these fragments. 



Eigs. 1 and 2, on Plate II, represent the outer and inner views of two right 

 hands, evidently belonging to a Canceroid, and probably to an Atergatis, or a 

 Galena. Only these two specimens are in the collection ; they are from a yellowish 

 brown argillaceous rock between Soojapoor and Badra, south of Mhurr in Kutch ; 

 the beds belong to Mr. Wynne's Argillaceous group of the nummulitic series. 



Eigs. 3 — 10, on Plate I, represent right and left hands apparently of one 

 of the GEAPSiD^, an Uca or Oardisoma, or some other allied genus. The two 

 hands are equal* or sub-equal ; the left appears to be less inflated ; the palms are 

 nearly quadrangular, with a sharp serrated edge above and below, granular on the 

 surface, the granules being most numerous on the median part of the outer side 

 and on the lower half of the inner side ; they are conspicuously larger at the base 

 of the fingers than in other places. The fingers are of a rather slender shape, 

 and nearly equal the palms in length ; they are moderately arched on the outer 

 serrated edge ; each finger has two longitudinal rows of distant spines, which in 

 the fossils, are usually indicated only by small pits. The immovable fingers have 

 the internal edge closely and sub-equally tuberculated, the tubercles being flattened 

 about the middle, and more or less confluent. The movable fingers have the 

 inner edge sharper, on the basal half provided with a few large tubercles, and 

 further on very finely serrated. Eragments of the chelae of this species are more 

 common than those of the Canceroid, just noticed ; they were also collected by 



