[505] I observed this in the hind legs of a variety of Locusta migratoria.
[506] Philos. Trans. 1816. t. xix. f. 5.
[507] Ibid. p. 325.
[508] In a specimen in my cabinet of Blatta gigantea, the posterior and anterior tarsi of one side have only four joints, while the intermediate one has five. On the other side the hind leg is broken off, but the anterior and intermediate tarsi have both five joints. In another specimen one posterior tarsus has four and the other five joints.
[509] The name of this genus properly spelled is Troxallis, from the Greek Τρωξαλλις, Gryllus.
[510] This insect, which is remarkable for having the margin of its thorax reflexed, was long since well figured in Mouffet's work (130. fig. infima). It has not, however, been described by any other author I have met with. It is common in Brazil. Some specimens are pallid, while others are of a dark brown. It is to be observed that the Blattina are resolvable into several genera.
[511] De Geer, iii. 421. t. xxi. f. 13. h. This author has also noticed the cushions in this genus and Locusta, and the claw-sucker in the latter, which he thinks are analogous to those of the fly. Ibid. 462— t. xxii. f. 7-8.
[512] Philos. Trans. 1816. t. xxi. f. 8-13.
[513] See Zoolog. Jour. for 1825. No. iv. 431.
[514] Philos. Trans. 1816. t. xxi. f. 1-9.