636 R. ETHERIDGE ON THE PALEONTOLOGY OE THE 



Plate XXVI. 



Fig. 1. Syringopora parallela, Eth., p. 583. 



Fig. 2. Zaphrentis offleyensis, Eth., p. 588 ; 2 a, section showing calice. 



Fig. 3. Amplexus Feildeni, Eth., p. 589. 



Fig. 4. Amplexus, sp., p. 589. 



Plate XXVII. 



Fig. 1. Murchisonia latifasciata, Eth., p. 600. 



Fig. 2. Murchisonia, sp., p. 601. 



Fig. 3. Helicotoma Naresii, Eth., p. 602. 



Fig. 4. Platyceras naticoicles, Eth. ; 4 a, variety, p. 603. 



Plate XXVIII. 



Fig. 1. Haly sites catenulatus, Linn., var. Feildeni, Eth., p. 582. 

 Fig. 2. Haly sites catenulatus, Linn., rar. Harti, Eth., p. 583. 

 Fig. 3. Chonophyllum, sp. (allied to magnificum, Billings), p. 584. 

 Fig. 4. Polypora biarmica, Keyserl. p. 622. 

 Fig. 5. Zaphrentis, sp., p. 588. 



Plate XXIX. 



Fig. 1. Spirifera, sp. (allied to pennata, D. D. Owen), p. 633. 



Fig. 2. Spirifera Aldrichi, Eth., p. 634. 



Fig. 3. Spirifera, sp. (allied to granulifera, Hall), p. 634. 



Fig. 4. Streptorhynchus, sp., p. 635. 



Discussion. 



The Duke oe Argyll expressed the pleasure he felt at having 

 listened to these most interesting papers, and remarked that, taking 

 into account the enormous difficulties in the way of collecting fossils 

 and rock-specimens under the conditions in which the expedition 

 was placed, no apologies were needed for the smallness of the collec- 

 tion. Indeed he thought that we ought rather to he surprised that 

 so much had been brought. The papers raised questions of the 

 highest interest, but it was impossible to discuss them adequately in 

 the brief time at the command of the meeting ; for his own part, he 

 should prefer to wait for their publication. 



Mr. Charleswortk commented on the reported absence of Lamel- 

 libranchiate Mollusca, and remarked that all negative evidence of 

 this kind required to be received with great caution. 



Prof. T. Eupert Jones said that these papers were founded on the 

 application of modern ideas to great tracts of which but little was 

 known. It was remarkable, considering how small the amount 

 of materials brought back necessarily was, that it should have fur- 

 nished such exceedingly important evidence in connecting the strata 

 of various countries and in elucidating preexisting difficulties. He 

 thought that we were greatly indebted to the Expedition, although 

 undoubtedly much still remained to be done; and it was to be hoped 

 that future expeditions would clear up many doubtful points and 

 supply much new and desirable information. He remarked that 



