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^-^^ ^OI-^ME IX. -'''^/^ 



DESCRIPTION OF A REMARKIBLE NEW SPECIES OP AGEIOXIXA 

 FROM MADAGASCAR. 



BY R. m'lACHLAN, F. L. S. 

 PSILOCNEMIS ALATIPES, n. S. 



Caput siqjra nigrum, lined nJhidd transversa utrinque signatum ; 

 frons alhidus. Thorax alhidus, utrinque lined nigra signatus. Pedes 

 alhi ; geniihas tarsisque anticis iiigricantihus ; tihiis intermediis i^osti- 

 cisque val.de explanato-dilatntis, elongato-ovalibus. Abdomen saturate 

 hnnineum ; segmentis (hasalihus duohus exceptis) niqro-terminatis ; seg- 

 mento \° alhido, dimidio hasali niqro ; 2" alhido, infra, lineisque latis 

 duahus lateralihus^ postice angiilatim sursum convergentihus, nigris ; 

 3" hasi summo lined alhidd tenni transversa, fere geminatd, signato. 

 Alas vitrece, ad costam levissime fiavido-tinctoe, suh-acntcB ; pterostig- 

 mate nigra ( J" ) . 



Head, black above, posteriorly witli a narrow transverse whitish line on each side ; front 

 portion of the vertex and the fi'ont and mouth organs (excepting the tips of the 

 mandibles) blackish ; or the whole head might be described as wliitish, with a 

 broad transverse black band above : antennce. with the second and third joints of 

 nearly equal lengths, but the third much thinner, two basal Joints whitish, third 

 joint blackish (rest broken). 

 Prothorax whitish, black at the sides ; the posterior lobe very large, only slightly 



raised, transversely oblong, the angles slightly rounded. 

 Thorax whitish ; sides broadly black at the base of the intermediate legs ; a vestige 



of a black humeral line indicated only at 

 its lower end, and a broad, black complete 

 line from the base of the posterior wings ; 

 finally the under-side is almost entirely 

 black between the coxae. Legs entirely 

 white, excepting the knees and tarsi of the 

 anterior pair, and the terminal joint of the 

 tarsi of the others, which are blackish ; 

 spines long and black ; the tibia; of the in- 

 termediate and posterior pairs are enor^- 

 mously dilated, elongate-oval, resembhng 

 the septum remaining after the dispersal of the seeds of some cruciferous plants 

 {e. g., Lepidium saiivum). 



•NE, 1872. 



