432 Annalx of the South African Museum. 



my opinion are one, for which I shall retain the name discoidalis. 

 Brancsik, in 1894-95, made known two species, A. speiseri, a very dis- 

 tinct one, and another, A. stratiotes, which will probably fall into 

 synonymy with A. longipes. Griffiui, in 1897, described A. jallae. 



The three species described by Kirby C. desertorum, germanus, and 

 serratus are mainly differentiated by the number of spines along the 

 groove of the upper side of the tibiae. This character is entirely 

 illusorv. Not only does it vary on the opposite legs of the same indi- 

 vidual, but also in examples caught the same day and in the same spot. 



I am adding four species which I consider to be very distinct ; so 

 that, in spite of the sinking in synonymy of six species, the repre- 

 sentatives of this genus in South Africa now number eight. One 

 of these, however, may be proved not to enter the South African 

 region. 



Table of Species. 



A 3 . Pronotum with two median spines in the centre of the disk, 



and no spines in the anterior border. 

 B a . Femora armed with spines. 



A 2 . Abdominal segments spinose ; fore tibiae with one spine 

 underneath ; hind femora with two inner and one outer 

 spine ; three first abdominal segments with a sharp spine 

 in the middle. ...... loandae. 



Abdominal segments simple, fore tibiae with three spines in 

 the inner side ; intermediate with one inner, hind with 

 three on each side underneath. 

 B 1 . All femora simple. 



Abdominal segments with a sharp median spine on the 



upper side ....... bechuanus. 



Abdominal segments simple ..... discoidalis. 



A 2 . Pronotum without the two spines in the centre of the disk : 



Antennae and legs testaceous, concolorous . . . speiseri. 



Antennae testaceous to within a short distance of the base, 



and black thence ; tarsi black .... varicornis. 



A 1 . Pronotum with two median spines in the centre of the disk, 



and two in the anterior border. 



Abdomen with one median row of spines . jallae. 



Abdomen with three rows of spines . . armativentris. 



ACANTHOPLUS LONGIPES, Charp. 



Orthopt. pi. 45. 

 A. stratiotes, Brancs., Jah. Ver. Treucs. Com. xvii-xviii, p. 259, 



pi. 8, fig. 10. 



This species was described as a native of Benguela. In the figure 

 given by Charpentier the number of spines on the underside of the fore 



