338 ORTHOPTERA. 



not contain any specimens, published records make it necessary to include six forms. 

 These may be separated as follows : — 



Synopsis of the Species of Rhytidichrota. 



A 1 . Hind tibiae armed with seven spines on the outer border. Anterior edge 

 of the pronotum distinctly ascending. 

 b\ Antennae distinctly ensiform. General colour obscure greenish-olive ; 



hind tibiae apically with the tarsi miniaceous 1. ensicornis, Stal. 



b'\ Antennae very narrowly and obsoletely subensiform or linear. 



c l . General colour varying from coral-red to subolivaceous-black. 

 Surface of head, thorax, and basal abdominal segments above 



granulose . . [2- varicolor, Stal.] 



c 2 . General colour yellowish-testaceous. Surface of the head, thorax, 



and basal abdominal segments above rugose . [3. sellata, Stal.] 



A 2 . Hind tibiae armed externally with eight spines. Anterior edge of the 

 pronotum not ascending. 

 b\ Dorsum of the pronotum and basal abdominal segment provided on 



each side with smooth, somewhat elevated, spots or callosities . . [4. antennata, Stal.] 

 b 2 . Dorsum of the pronotum and basal abdominal segment without 

 callosities. 



c 1 . General colour yellowish testaceous [5. turgida, Stal.] 



c'\ General colour obscure olivaceous green ; the antennae, palpi, cerci, 



and genicular portion of hind femora subsanguineous .... [6. brunneri, Stal.] 



l. Rhytidichrota ensicornis, Stal. 



Rhytidichrota ensicornis, Stal, Bih. till K. Svensk. Vet.-Akad. Handl. v. no. 4, p. 76 (1878) * ; 

 Syst. Acrid, i. p. 76 (1878) \ 



Ilab. Panama l 2 . 



Not found among the material studied and unknown to the present writer. 



[2. Rhytidichrota varicolor, Stal. 



Rhytidichrota varicolor, Stal, Syst. Acrid, i. p. 76 (1878) '. 

 Hob. Colombia, Medellin l .~] 



[3. Ehytidichrota sellata, Stal. 



Rhytidichrota sellata, Stal, Recens. Orthopt. i. p. 55 (1873) 1 ; Syst. Acrid, i. p. 77 (1878) 2 . 



Ilab. Colombia x 2 .] 

 [4. Ehytidichrota antennata, Stal. 



Rhytidichrota antennata, Stal, Recens. Orthopt. i. p. 55 (1873) ' ; Syst. Acrid, i. p. 78 (1878) 2 . 

 Bab. Colombia, Remedios x 2 .] 



