Order Colobognatha Jlalcu with seven p i i n of i)re-copulntory lehq; copiilntory orgins not inore thnn ?-jointed, replacing OIIC or both lrniis of l r g of the seventh s~l l c l l t .

That the genera included in this family present structural characters of great diversity has been known since the publication of Mei-

An additional genus, Gosodesmus Chamberlin, related to Brachycybe, was described in 1922 from southern California. Its characters are given at the end of this paper.. Another member of this family was found still farther north in California, in November, 1926, while the paper was awaiting publication, so that two new genera ol Siphonophoridae are included.

referable to A. stygia (Latzel). They were not congeneric with the types of Craspedosina rawlinsii in the British Museum. Boeemania Silvestri, 1896. Unfortunately, this name has been used for a genus of fishes ; for the genus of Lysiopetalidae may be substituted Trypostrephon, nom, nov., with T. ojientalis (Silvestri) as type.

It is a matter of popular knowledge in south Texas that extensive regions which w^ere formerly grassy, open prairies are now covered with a dense gTOwth of mesquite (Prosopis), prickly-pear cactus (Opuntia), and many other shrubby plants of intermediate size.Testimony to this effect is definite and unanimous. It differs locally only in the number of years since the bushes began to grow-thirty years, or twenty, or ten-subsequent to the establishment of the grazing industry on a large scale, the annual burning of the grass by the cattlemen, and finally the fencing of the land for still more intensive grazing.