ORTHOPTERA. ACIIETIDiE. 449 



edition of the Regne Animal, pi. 81. f. 2., is evidently a partially de- 

 veloped imago. My specimens of T. variegatus (received from Messrs. 

 Lefebvre and Audouin) agree with this figure, the wings being very 

 short, and, as described by M. Foudras, quite unfitted for flight ; but 

 the ocelli are quite distinct, thus indicating the imago state. In T. 

 paradoxus and T. fasciatus, the wings extend beyond the abdomen. 

 According to M. Goureau, the wing-covers of the males have not 

 an apparatus for stridulating. (Ann. Soc. Ent. de France, 1837, p. 44.) 

 Mr. Newman has described a South American insect closely allied to 

 Tridactylus, under the name of Ripipteryx marginatus. {Ent. Mag. 

 vol. ii. p. 204.) Mr. Hope, and, I believe, also Mr. Burchell, possess 

 specimens of this remarkable insect. 



Another remarkable species, of very minute size, hitherto only found 

 in ants' nests, is the Myrmecophila Acervorum (Panzer, 68. 24. 

 Blatta Ac; Splicerium Charpent. Horce Ent. p. 79. ; my Jig. 54. 16.); 

 the body is destitute of wings and wing^covers, and is nearly globose, 

 with the hind femora remarkably robust, the anal filaments and ovi- 

 positor of moderate length ; the antennae very long, and the tarsi 

 3-jointed. From its remarkable form, Charpentier was induced to 

 consider it as " medium inter Blattas et Achetas constituens genus," 

 although evidently more nearly related to Acheta. See also a Memoir, 

 by Savi, in the tenth volume of the JBiblioteca Italiana, entitled, " Osser- 

 vazioni sopra la Blatta Acervorum di Panzer," which he names Gryl- 

 lus myrmecophilus. It has been taken near Paris, by Audouin ; and 

 by Dr. Klug, near Berlin. It has been recently re-figured in the Cro- 

 cliard edition of the Regno Animal. 



In the first volume of the Transactions of the Literary and His- 

 torical Society of Quebec, 1829, there is published a memoir by the 

 Hon. J. Hall, on a species of black cricket, which is asserted to ap- 

 proach the shores of rivers, &c., in September, where it deposits its 

 eggs in a cocoon-like mass, six inches long. 



The curious Indian species, Scliizodactylus (Bridle) monstrosus, is 

 the largest insect belonging to the family, and is remarkable for the 

 great length of the wing-covers as well as the wings, which far extend 

 beyond the extremity of the body, and of which the extremities are 

 rolled up in spiral coil when unemployed, the basal part being hori- 

 zontal, except at the edges ; the body is short and thick, terminated 

 by two long and robust filaments ; the tarsi are also remarkable, being 

 4-jointed, the first and terminal joints long, and the second and third 



G G 



