LOCUSTIDiE. 373 



11. MiCROCEXTRUM DECORATUM. 



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

 angustius, verticis carinula antica longi-conica sulcata ; prothorax 

 dense punctatus, disco lineis quatuor transversis impressis, carinis 

 lateralibus sat determinatis ; maris abdomen coccineo univittatum ; 

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

 angustce, femoribus posticis duplo longiores, casta apicem versus recta ; 

 al(B posticcB diaphance, striga apicali lata viridi. 



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

 pectus and abdomen luteous. Head wiih the fore part partly green, almost 

 as broad as the prothorax; keel in front of the vertex elono;ate-cunical, 

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

 ferruginous, prominent, nearly round. Antennae browu, green at ihe base. 

 Prolhorax 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. l^Jesoslernum 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 hind 

 tibice, 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; expansiou of the fore wings 

 30—36 lines. 



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

 is much contracted in front. 



<T, h. St. Domingo. From Mr. Tweedie's collection. 



12. MiCKOCENTRUM DIVISUM. 



Mas et foem. Pallide luteum (mas.) aut viride (fcem.) ,• caput ex parte 

 albidum, verticis carinula antica longi-conica sulcata; prothorax 

 subtiliter punctatus^ disco linea longitudinali lineolaque transversa 

 valde flexa impressis, carinis lateralibus bene determinatis ; oviductus 

 brevissimus; cerci recti, apices versus abrupte arcnati ; aUe anticce 

 sal angustce, femoribus posticis duplo longiores ; alceposticce 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 

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

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



