470 ME. W. F. KIEBY ON NEW OE EAEE 



Xenomaches, gen. nov. 



Male. Antennae extending' a little bej^ond the front femora, 2i-jointed ; scape and 

 3rd joint about twice as long as broad, 2nd and 4th joints hardly longer than broad, 

 the rest gradually increasing in length to the 15th, the middle joints being long 

 and cylindrical ; the IGth is shorter than the 15th, but the 17th is nearly as long ; 

 the next five gradually shorten; the 23rd is again longer, and the terminal joint 

 longer still. The head is long, not narrowed behind, convex above. The prothorax, 

 mesothorax, and sides of the nietathorax ai-e set with long conical spines ; the front 

 femora are armed with a double row of strong spines beneath, the middle femora 

 only witli one or two towards the extremity, and the hind femora with a row 

 on the central ridge, but only one or two at the extremity of the lower lateral 

 ridges. Hinder legs rather sbort and stout ; front legs long ; first joint of tarsi nearly 

 as long as the remainder ; in the other pairs it is much shorter. Pulvilli very 

 large. The mesothoi-ax is nearly three times as long as the prothorax, and slightly 

 widened behind ; the median segment is nearly twice as long as the metanotum. 

 The abdomen is cylindrical, the .segments are longer than broad, and the middle ones 

 much thickened ; it then tapers rapidly to the extremity, and the cerci are very long, 

 slender, and pointed. The tegmina and Aviugs are rudimentary in the specimens 

 before me. 



This genus is allied to Bhaphidenis, from which its much stouter build, shorter 

 antennae, and rudimentary organs of flight will easily distinguish it. The types of 

 Hhaphiderus inhabit the Mauritius. The new genus Xenomaches is founded on the 

 following species from Rodriguez : — 



Xenomaches incommodus. 



Bacillus incommodus, Batler, Ann. Nat. Hist. (4) xvii. p. 410 (1878) ; Phil. Trans, clxviii. p. 148,- 

 pl. liv. figs. 4, 4 a-c (1876). 



As Dr. Butler has already described and figured this insect, it will not require further 

 notice here. 



Megacrania phelaus. 



Platycrania 'phelaus, Westwood, Cat. Phasm. p. 113. n. .288, pi. xxvii. fig. 5 (1859). 



The original type of this species (a female from Fiji) is in the British Museum. Three 

 more specimens of what appear to be the same species, from the Solomon Islands, have 

 lately been added. They are less discoloured than the type ; the head, legs, and thorax 

 are green, and the abdomen light mahogany-brown, with irregular longitudinal 

 yellowish-grey markings, and shading into darker brown towards the ends of the 

 segments. The male differs little from the female, except in being more slender, and in- 

 the greater expanse of the wings (nearly 4 inches). 



