of Phasmidee from Madagascar. 387 



nium } Westw., is the one which the Madagascar forms most 

 nearly approach. 



1. Parectatosoma hi/strix, n. sp. 



^ ? . Head armed with 12 spines (besides scattered spi- 

 nules) arranged in four longitudinal rows and in pairs, of 

 which one is large, compressed, and thorny, and constitutes 

 the conspicuous cephalic horns ; the pair of spines imme- 

 diately in front of these is also compound, each being pro- 

 vided with a sharp spine-like cusp in front. The post- 

 antennary pair of spines is as well developed as in Ectato- 

 soma. 



Sides and upper surface of prothorax strongly armed with 

 thorns, some of which are double. The apices of the small 

 tegmina barely reaching the bases of the wings ; the true 

 metanotum is consequently exposed, and it is armed at the 

 middle of its hinder margin with a pair of stout thorns. The 

 tergum of the first somite and the terga of more or fewer 

 (according to sex) of the remaining abdominal somites pro- 

 vided at their hinder extremities with two cross rows of 

 spines. Posterior margin of tergum of last abdominal somite 

 in the female symmetrically divided into six spinous pro- 

 cesses. 



Colour deep black-brown, almost black, blotched with 

 yellow, sparingly so on the under surface and legs, but more 

 profusely on the pronotum and on the terga of the abdominal 

 somites, on which parts the colour assumes an orange tinge 

 and extends to the points of the spines ; the antennas are 

 ringed at the joints with the same colour ; organs of flight 

 greenish yellow, with their bases and principal nervures black. 



<£. Length of body 61 millims., of head 7, pronotum 5, 

 mesonotum 14, metanotum 7, abdomen 25 + 7 = 32, tegmina 

 2*5, wings 8, fore femur 17, tibia 17*25, intermediate femur 

 18*5, tibia 15*5, posterior femur 17, tibia 21, antennas 53. 



? . Length of body 86 millims., of head 10, pronotum 7, 

 mesonotum 18, metanotum 10, abdomen 31'5 + 125 = 44, 

 tegmina 4*5, wings 10"5, fore femur 19, tibia 20, intermediate 

 femur 16, tibia 18, posterior femur 21, tibia 25, antennas 

 imperfect. 



Hah. Three males and three females from Fianarautsoa and 

 one female from Antananarivo, Madagascar, differing from 

 the rest only in being much more variegated. 



2. Parectatosoma echinus, n. sp. 



<$ $ . Slenderer, and less numerously and less strongly 

 spined than the preceding. Head armed : female with ten 



