LOCUSTID,E. 373 



11. MlCROCENTRUM DECORATUM. 



Mas et fcem. Viride, plus minusve luteo varium ; caput prolhorace vix 

 angustius, verticis carinula anlica longi-conica sulcata ; prothorax 

 dense punctatus, disco lineis quatuor transversis impresxis, carinis 

 lateralibus sat deierminatis ; mavis abdomen coccineo univittatum ; 

 cerci arcuati,fere cylindrici; oviductus brevissimus ; alas anticce sat 

 anf}usta,femoribusposlicis duplo longiores, costa apicem versus recta ; 

 alee posticte diaphance, striga apicali lata viridi. 



Male and female. Grass-green, smooth, shining. Head, prothorax' 

 pectus and ahdomen luteous. Head with the fore part partly jjreen, almost 

 as broad as the prothorax; keel in front of the vertex elongate-conical, 

 furrowed ; elongation of the front between the antennae conical. Eyes 

 ferruginous, prominent, nearly round. Antenna? brown, green at the base. 

 Prothorax thickly punctured, with a flat disk which increases very slightly 

 in breadth hindward, where it is green ; four transverse impressed lines ; 

 first and second lines curved; third deeply bent; fourth nearly straight ; 

 lateral keels moderately defined; fore border slightly excavated in the 

 middle, slightly convex on each side; sides with a conical outline ; hind 

 border rounded. Mesoslernum and metasternum notched. Abdomen of 

 the male with a crimson dorsal stripe; sides mostly green. Cerci curved, 

 nearly cylindrical. Lower appendages of the male straight. Oviduct very 

 short. Legs slender; spines minute; hind femora as long as the bind 

 tibiae, about half the length of the fore wings. Fore wings rather narrow, 

 sometimes partly luteous, very minutely reticulated, shorter by one line and 

 a half than the hind wings, the greatest breadth at rather before half the 

 length; costa straight beyond the middle; large areolets few, irregular, not 

 clearly defined. Hind wings pellucid ; veins pale green ; apical patch 

 green. Length of the body 10^ 12 lines ; expansion of the fore wings 

 3036 lines. 



It is distinguished from M. subaquale by the keel of the vertex, which 

 is much contracted in front. 



o, b. St. Domingo. From Mr. Tweedie's collection. 



12. MlCROCENTRUM DIVISUM. 



Mas et fosm. Pallide luteum (mas.) aut viride (foem.) ; caput ex parte 

 albidum, verticis carinula anlica longi-conica sulcata ; prothorax 

 subtiliter punclatus, disco linea longitudinali lineolaque transversa 

 valde flexa impressis, carinis lateralibus bene determinatis ; oviductus 

 brevissimus; cerci recti, apices versus abrupte arcuati ; alee anticts 

 sat angustce,femoribusposticis duplo longiores ; alee poslicce diaphance, 

 plaga apicali pallide viridi. 



Male and female. Pale luteous (male), or green (female), smooth, 

 shining. Head whitish above on each side and towards the mouth, nearly 

 as broad as the prothorax ; vertex with a slight longitudinal line, its fore 

 keel elongate-conical, furrowed; elongation of the front between the 

 antennae elongate-conical. Eyes ferruginous, prominent, short-elliptical. 

 Prothorax finely punctured; disk flat, widening hindwurd, with two slight 



