KUNGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 51. N:O 3. 5 
discuss briefly such geological questions as are immediately connected with it. The 
flora throws some light on the geological structure of this part of Patagonia; but a 
detailed description of the geology of the region is better postponed. Of the few 
marine fossils found in more or less close connection with the flora only the Cepha- 
lopoda have as yet been examined by a specialist (STOoLLEY 1912). The rest of the 
invertebrates collected both in the same series and in other adjacent and comparable 
districts is still awaiting description; and until this has appeared the geology of the 
region can only be discussed in the simplest outlines. 
In addition to the flora of the Lago San Martin district, some few other fossil 
plant-remains of the older Mesozoic type were also found during the expedition. 
These plant-remains, which were collected at Bahia 'Tekenika in the extreme south 
of Tierra del Fuego, were not only few but also badly preserved. Nevertheless, they 
have proved to be of a considerable geological interest, by affording a rough determina- 
tion of the age of the highly disturbed strata of the Fuegian cordillera. The Teke- 
nika plants will here be described first. 
