700 



REPORT — 1884. 



uppermost Jurassic age far to the westward, a little east of the mouths of the 

 river Indus. The similarity of the plant-remains in the two series has caused 

 them to he classed together, hut it is not certain that they are really of contem- 

 poraneous origin. 



The following is a list of the Jahalpur plants : — x 



Conifers. — Palissya, 2 ; Araucarites, 1 ; Erhinostrobus , 2 ; BrachypJiyllum, 1 ; 



Ta.vites, 1 ; Gingko, 1 ; Pliccnicopsis, 1 ; Czelanowskia, 1, 

 CYCADEACEJ2. — Pterophyllum, 1 ; Ptilophyllum, 2 ; Podozamites, 3 ; Otozamites,4; 



Williamsonia, 1 ; Cycadites, 1. 

 Pieices. — Sphenojiteris, 1 ; Dicksonia, 1 ; Alethopteris, 3 ; Macrotceniopleri-s, 1 ; 



Glossopiteris, 1; Sagenopteris, 1. 



Of these thirty species nine are regarded either as identical with forms found in 

 the Middle Jurassic (Lower Oolitic) of England or as closely allied. 

 The Cutch plants helong to the following genera : — 2 



Conifers. — Palissya, 3 pp.; Pachyphyllum, 1; Echinostrohus, 1; Arau- 

 carites, 1. 



Cycadeacejg. — Ptilophyllum, 3 ; Otozamites, 3 ; Cycadites, 1 ; Williamsonia, 1 ; 

 Cycadolejns, 1. 



Fieices.- — Oleandridium , 1; Tamiopteris, 1; Aletltopteris, 1; Pecopteris, lj 

 Pachypteris, 2; Aetinopteris, 1. 



Of the twenty-two species enumerated four are identified with specific forms 

 found in the Middle Jurassic of Yorkshire, and seven others are closely allied. 

 The Cutch and Jabalpur beds, in short, are intimately related with European fossil 

 floras. 



One interesting fact should he mentioned. The Cutch flora occurs in the upper 

 part of the Umia beds, the lower beds of which contain cephalopoda of Portlandian 

 and Tithonian forms. In a lower subdivision of the Cutch Jurassic rocks, the 

 Katrol group, shown by numerous Ammonites to be allied to Kimmeridge and upper 

 Oxford beds of Western Europe, four species of plants have been found, of which 

 three are met with in the Umia beds, and the fourth, an English oolitic form, in the 

 Jabalpur series. This evidence seems iu favour of the view that the flora under- 

 went change more slowly than the marine fauna. 



It will be as well, before leaving the subject of the Gondwana groups, to show 

 in a tabular form the geological age assigned to the flora and fauna of each 

 separately, on the evidence afforded by comparison with the plants and animals 

 known from European formations. 



Flora of Tonquin. — Quite recently M. Zeiller has described a series of plants 

 1 Pal. Ind. ser. xi. pt. 2. ' Pal. Ind. ser. xi. pt. 1. 



