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constitute a representative series, and found that, so far as the species on 

 his lists were concerned, it was an invariable rule that in the Amphiabaeni- 

 dae the right lung was the smaller, and usually rudimentary or absent, while 

 in all other cases of inequality it was the left lung which was the smaller. 

 The rationale of lung-inequality was then briefly discussed from the side of 

 comparative anatomy and embryology. — Mr, W. Saville Kent, F.Z.S., 

 read some observations on the Frilled Lizard [Chlamydosaurus Kimji) of 

 Western Australia. After describing the peculiarities of this reptile Mr. Sa- 

 ville Kent stated that he was inclined to regard it, if not as a surviving re- 

 presentative of the Dinosaurian Reptilia, as, at any rate, a most interesting 

 and anomalous lacertilian type that inherited its characteristic bipedal me- 

 thod of progression from that extinct group. Mr. Saville Kent's paper was 

 copiously illustrated by photographs taken by him from life of Clamydosau- 

 rus in its bipedal running and other characteristic attitudes , and also by 

 specimens which had been mounted in strict accordance with these photo- 

 graphs. — Two communications were read from Dr. A. G. Butler, F.Z.S., 

 on a small collection of Butterflies made by Consul Alfred Sharpe at Zomba, 

 British Central Africa, and on a collection of Lepidoptera recently collected 

 in Eastern Central Africa by Mr. G. F. Scott Elliot. — A communication 

 was read from Mr. G. S. West, on the buccal glands and teeth of certain 

 poisonous Snakes. The author showed that in the Opisthoglyphous Snakes 

 the poison-gland is very variable both in form and extent, and that its duct 

 opens into a cavity formed by muscular folds surrounding the grooved tooth. 

 This opening is always towards the outer side of the grooved tooth, and 

 situated either at its base or but a short distance from it, and the parts were 

 shown to be so related that the loss of the tooth does not cause any injury 

 to the duct. The reserve teeth were shown to be in no way connected with 

 the duct until called upon to replace teeth that had been lost. The epithe- 

 lium of the distal portion of the duct was shown to be of a secretory nature, 

 the cells being mucus-secreting, similar to those forming the lining epithe- 

 lium of the mouth. — In the Hydroi hiinae the poison-gland was shown to 

 be more or less free from the superior labial, and to consist of a large number 

 of longitudinally disposed tubules converging anteriorly towards a central 

 poison-duct. There were two large poison-fangs situated almost side by side 

 at the anterior extremity of the maxilla. The duct when approaching the region 

 of the teeth became slightly sinuous and suddenly enlarged , enclosing a 

 cavity into which there projected two muscular cushions, one in front of the 

 base of each tooth , and it was through the vertical slit between these that 

 the poisonous secretion passed from the duct to the grooves of the poison- 

 teeth. Attention was drawn to the presence in Hydrus of very large con- 

 voluted blood-sinuses, extending on both sides of the maxillae and man- 

 dibles, and filling up the interstices between the teeth. From their position 

 and development, these appeared to be organs of respiration analogous to 

 the villous processes present in the mouths of certain Chelonia, — A 

 communication was read from Mr. William H. Ashmead, containing a 

 report upon the Parasitic Hymenoptera of the Island of Grenada , compris- 

 ing the families Cynipidae, Ichneumonidae, Braconidae, and Proctotrypidae. 

 This paper enumerated as occurring in Grenada 183 species, of the families 

 named in the title, and described 128 of them as new. Of those previously 

 known the majority had been recently described by Mr. Ashmead as found 



