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proving destructive to poultry. On several occasions it has been known to enter the houses in search of roaches and other vermin, and has been captured in rat-traps. It is strictly nocturnal, and spends the day in caves, holes in the coral limestone rocks and in hollow trees and logs. It is a slow, stupid creature. It is unable to run rapidly, but shambles along with the zigzag, sidewise motions of a plantigrade. It is, doubtless, owing to this that i t obtained the native name of " Orso " (bear). Article XXIV.*by S. .A. Rohwer is on " A Fossil Larrid Wasp"; t h e same author contributes article XXV., a discussion of the fossil saw-flia (Tenthredinoidea) of t h e Florissant Shales. Article XXVI. comprises notes on the skull of Lysorophus tricarinatus Cope, by E. C. Case, of which the author remarks, t h a t Were i t not for the extreme specialization of this limbless Gymniophiona-like form i t would occupy almost emactly the transitio~zal position betwee% the amphibians and reptiles.

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