branchial arches are formed, and has much the shape of a bean pod, being quite broad along the— central part and...the results of his second season’s operations in Texas, adding several new species to our fauna, with great...California and those tracts of land which form with West Texas: the North Mexican botanical province. In June,...species were over thirty new species of Cactus. West Texas was extensively explored since 1835, when Ferdinand...geologist F. Roemer, who studied the geology of Texas in _ 1846-1847, and received many specimens from |