Teleutias tortus new species (Plate III, figs. 17 and 18.)
A small species related to T. brevifolius and nigro-tarsatus Brunner, from the upper Amazonian region, but differing from the former in the shorter tegmina in both sexes, and the shorter femora, the non-hirsute disto-dorsal abdominal segment of the male and the continuous character of the pronotal cariniform markings, which are as distinctly indicated on the metazona as on the metazona. From nigro-tarsatus the new form differs in the median femora having two or three spines on the ventro-cephalic margin, in the shorter cerci of the male, the non-incurved styles of the subgenital plate of the same sex and in the third tarsal joint not being black. From all the other species of the genus, the new form apparently differs in the caudal genicular lobe of the cephalic femora and the cephalic genicular lobe of the median femora being rounded and unspined.