MICK0CENTKI7M. 359 



1. Microcentrum lanceolatum, Burm. (Tab. XVII. figg. 1, 2, ? .) 



Phylloptera lanceolata, Burm. Handb. d. Ent. ii. p. 692 (1838). 



Microcentrum lanceolatum, Brunn. v. W. Monogr. der Phaneropt. p. 335. 2, t. 7. fig. 97. 



Phylloptera laurifolia, de Haan, Bijdr. tot de Kenn. Orthopt. p. 197. 



Phylloptera (Orophus) salvifolia, Sauss. Rev. et Mag. Zool. (2) xi. p. 204 (1859). 



Figures : — Pig. 1, the female insect. — Fig. 2, the head from in front, magnified. 



Hah. Guatemala, San Geronimo {Champion). — South Ameeica, Cayenne, Surinam, 

 Pernambuco, Bahia, Rio Janeiro. 



[2. Microcentrum myrtifolium, sp. n. 



2 . Prasinum. Apex verticis quam primus articulus antennarum paulo latior, subsulcatus. Frontis fastigium 

 paulo latius, apice subincisum, ocello magno notatum. Pronotum leviter corrugatum, antice leviter 

 coarctatum ; metazona punctata ; canthis tota longitudine distinctis et rotundatis. Elytra nitida, 

 lanceolata, apice angustato, parabolico, quam in M. lanceolato minus acuto ; campo marginali lato, 

 margine antico arcuato, tertia parte proximali nodulis carneis sat minutis signato ; niafgine postico, basi 

 et apice exceptis, subre'cto ; vena media ante medium venae principalis oriens, ejus ramus primus cum vena 

 ulnari per venulam transversam conjunctus. Femora antica subtus mutica, postica dimidia parte distali 

 spinulosa. Lobi sternales producti, acuti. 



$ . Verticis apex deflexus, anguste sulcatus, frons ocello maximo. Pronotum nitidum, minus corrugatum, 

 supra angusto, cantbis postice acutis, nitidis, in prozona magna parte rotundatis at nihilominus distinctis. 

 Elytrorum noduli marginis antici basi crassi, dehinc minuti, longe ante medium marginem desinentes. 

 Campus tympanalis sinistri elytri totus coriaceus, venis stridulantibus 2 parallelis, nitidis. Segmentum 

 anale supra transversum, margine postico recto. Lamina infra-genitalis angusta, elongata, valde carinata, 

 apice acutangulatim incisa, stylis subarcuatis, teretibus, instructa. 



2 . Long. corp. 27"5 ; pronot. 7*4 ; elytr. 51, lat. 15*5 ; femor. post. 26*5 ; ovipos. 5-5 millim. 



3 . Long. corp. 27 ; pronot. 7"4 ; elytr. 48-5, lat. 14 ; femor. post. 26'5 ; styl. 1*4 millim. 



Hah. Brazil (Mus. Genavense). 



A very peculiar species. The female resembles M. lanceolatum and its allies, but has 

 a narrower vertex and forehead, and the ridges of the pronotum are more distinct, not 

 obliterated anteriorly, nearly as in M. triangulatum (which has a much broader 

 pronotum, narrow vertex, small ocelli, &c). The male is somewhat different, it having 

 the apex of the vertex deflexed downwards and bearing a fine sulcus ; nevertheless, we 

 cannot separate it from the female.] 



3. Microcentrum securiferum, Brunn. 



Microcentrum securiferum, Brunn. v. W. Monogr. der Phaneropt. p. 337. 5. 

 Hah. Panama, Chiriqui. 

 Unknown to us. 



[4. Microcentrum martinicum, sp. n. 



Prasinum, nitidum, statura media. Verticis apex planus, haud sulcatus, apice primo articulo antennarum 

 fere aequilatus ; frontis fastigium ocellum minutum gerens. Pronotum planum, nitidum, postice 

 subtiliter striolatum ; cantbis acutis, luteis ; margine postico rotundato ; lobi laterales inferne attenuati. 

 Elytra ovato-lanceolata, marginibus binis arcuatis; vena media ante medium oriens, ejus ramus primus 



