upon the Genus Syrtis of Fabricius. 27 



Fabricius, Syst. Rhyng. p. 123, No. 8. (Syrtis prehensilis.) 

 Wolff, Icon. Cimic. t. 17, f. 164. (E Carolina.) 

 Obs. — Fabricius species duas forsan his verbis confundit : 

 " Color variat nunc griseus punctis aliquot scutelli nigris, 

 nunc niger scutello griseo lined dorsali late nigra. Corpus 

 semper griseum." 



Sp. 10. Macroce^^halus paUidus. (n. s.) 



M.pallide luteo-ochraceus, scutello lutescenti, undiquepunctato, 

 lined tenui dorsali Isevi, thorace lateribus subemarginatis 

 angulis posticis obtuse productis, disco antico lineis tribus 

 subelevatis punctisque quatuor profundis, transverse positis 

 ante medium disci ; pedibus, antennis et corpore subtus 

 concoloribus, abdomine magis fulvo ; hemelytrorum corio 

 luteo, membrana hyalina. 



Long. corp. lin. 2§. 



Habitat in Georgia Americae. Mus. nostr. 



Obs. — M. prehensili affinis, at major. 



Sp. 11. Macrocephalus maci/entus. (n. s.) (Tab. 2, fig. 6.) 

 M. elongatus, angustus, punctatus, squamis niinutis albidis ob- 

 situs ; capite supra cum antennis fuscis ; thorace antice 

 luteo-fulvo, parte postica vix elevata fusca, angulis posticis 

 prominentibus acutis, scutello fusco ad basin subferrugineo, 

 carina central! parum elevata. 

 Long. corp. lin. 3|. 



Habitat in Colombia. D. Lebas. In Mus. Reg. Parisiis. 

 Abdomen oblongum, lateribus parallelis, postice rotundatum. 

 Caput et thorax cum pedibus anticis pallide luteo-fulvis, pe- 

 dibus 4 posticis brunneis, femoribus basi lutescentibus. Ab- 

 domen subtus pallide luteo-rufescens. 

 There still remains to be described a remarkable insect which 

 I have only seen in the collection of the Jardin des Plantes, 

 which seems intermediate between Macrocephalus and Phymata, 

 agreeing with the former in its genferal characters, and with the 

 latter in the diminished size of the scutellum. The structure of 

 the antennae and the neuration of the hemelytra however clearly 

 prove this insect to be nearest to the genus Macrocep)halus. It 

 will be necessary, consequently, to establish a distinct sub-genus 

 for its reception, which may be termed 



OxYTHYREUS, from the acute apex of the scutellum. 

 Antenntje (fig. 7 «) capite longiores ; articulo Imo crasso, 2do 

 et .3tio brevissimis, 4to praecedentibus simul sunitis duplo 



