Descriptions of New or Little-known Orthoptera. 435 



ACANTHOPLUS SPEISERI, Brancs. 

 Jah. Ver. Trans. Com. xvii-xviii, 1896, p. 258, pi. 8, fig. 9. 



This species is easily recognised by the absence of the two spines in 

 the median part of the pronotum. In my examples the head and legs 

 are green, the anterior part of the pronotum is dark green, and the 

 hind part reddish pink, while the margin all round is straw-colour. 



Originally described from Boroma, on the northern side of the 

 Zambesi, this species is also found in Southern Rhodesia (Salisbury), 



A. O'Neil, G. A. K Marshall; (Queque), T. D. Bultitude. My 

 examples are much smaller than those described by Brancsick, i. e. 

 28 mm. in length, against 37-45 mm. 2 <$ $ 1 ? . 



ACANTHOPLUS VARICORNIS, n. sp. 



Very closely allied to A. speiseri: the pronotum also lacks the two 

 discoidal spines, and is not so constricted oil the upper side ; the 

 femora also are simple underneath, and the inner part of the groove 

 bears five distinct spines, the outer being without any, whereas there 

 are two weak ones only on the inner side in A. speiseri, or even none 

 at all. But whereas in A. speiseri the antennae are entirely testaceous, 

 in A. varicornis they are testaceous as far as the 15th basal joints, the 

 others being black ; all the tarsi are also black, whereas they are 

 testaceous in A. speiseri. 



Length of body 18 mm. ; of pronotum 12 mm. ; of hind femur 

 13 mm. ; of hind tibiae 15 mm. 



Hob. Northern Ehodesia, H. Dormau. 1 $ . 



ACANTHOPLUS JALLAE, Griff. 

 Boll. Mus. Torin. xii, 1897, p. 290. 



This species, like the one following, has two distinct median spines 

 on the fore border of the pronotum, which is constricted in the middle 

 and bears there two discoidal spines in the manner of A. longipes, etc. ; 

 the first five abdominal segments bear each in the hind border a long 

 recurved spine. 



I have not met with this species, which was probably collected in 

 Barotseland. 



ACANTHOPLUS ARMATIVENTRIS, n. sp. 



Allied to A. j alias. The shape and disposition of the spines on the 

 pronotum are alike, the two in the middle of the anterior border are 

 very well defined ; its distinctive character is in having three dorsal 

 series of spines on the abdomen, a central one arranged on the hind 

 border of segments 1-6 ; a lateral one disposed on segments 1-4, and 



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