308 Mr. M. Burr's Ohscrvations on 



quadratum, fuscuni, lateribus pallidioribus. Elytra fulvo-fusca, in- 

 distincte iitrinque nigro-marginata, brevia, apice truncata ; alae 

 abbreviatge ; pedes unicolores, fusco-testacei, graciles ; abdomen 

 nigrum, sensim dilatatum, sed apice angustatum, segmentis laterali- 

 bus, r? 2-4, $ 3-4 tuberculis pliciformibus instructis, quorum 

 posticum maximum ; abdomen nigrum, baud nitens ; segmentum 

 ultimum dorsale ^ parvum, angustatum, baud tuberculatum, medio 

 impressum, $ declive, angustius, medio profunde triangulariter im- 

 pressum ; segmentum ultimum ventrale ^ angustum, transversum, 

 $ ovale ; pygidium ^ baud perspicuum, $ minimum, conicum : 

 forcipis bracchia, ^ basi subcontigua, valida, inermia, subrecta, 

 apice flexuoso-incurva, decussata ; $ brevia, simplicia, recta. 



6 ?. 



S 9 



Long, corporis . . . 7*5 nmi. 10 mm. 



„ forcipis . . . 2'5 „ 2'25 „ 



Hah. Abyssinia, 1 ^, 1 ^ (Mission de Bonchamps, Ch. 

 Michel and 3f. Potter, Mus. Paris). 



Allied to 0. hora, Borm., but differs in its stouter build 

 and darker colour. From 0. aptera, which I only know 

 from Verhoeff's description, it differs in its paler colour, 

 reddish head, and unarmed forceps. 



Opisthocosmia ero^oris, sp. n. 



Statura majore. Niger. Antennae (?) 13 segmentatse, apicem 

 versus pallido-annulatse. Pronotum capite angustius, medio nigrum, 

 paullo elevatum, marginibus lateralibus rufescentibus, reflexis, mar- 

 gine antico recto, postico rolundato. Elytra baud nitida, atra, lata ; 

 alfe nigrse, basi atque apice rufo-punctata?. Pedes graciles, longi, 

 rufo-nigri. Abdomen nigrum, vix dilatatum, segmentis lateralibus 

 3-4 (J, 4 5 (ut videtur) tuberculis instructum ; segmentum ulti- 

 mum dorsale declive, angustum, margine postico recto, $ supra 

 insertionem forcipis utrinque tuberculo obtuso instructum ; 9 

 declive, angustius, vix tuberculatum ; segmentum penultimum ven- 

 trale rotundatum. Forcipis braccbia ; $ nigra, rufescentia, basi 

 contigua, parallela, inermia, rectissima usque secundam tertiam 

 partem longitudinis ; tum dente acuto forti superno armata, subito 

 ovale-curvata, aream ovalem includentia ; apice paullo incrassata, 

 dente margine interno valida arnuita, tum iterum recta, contigua, 

 attenuata, apice ipso mucronibus decussatis ; ^ recta, gracilia, 

 simplicia. ^ J . 



