374 CATALOGUE OF 



impressed lines, one longitudinal, the other transverse and deeply bent; 

 lateral keels well de6ned ; lure border nearly straight ; sides with a conical 

 outline; hind border rounded. Mesoslernuui and nietasternuin deeply 

 notched. Cerci straight, abruptly curved towards their tips, which are 

 black. Legs with the usual structure; hind femora about half the length 

 of the fore wings. Fore wings rather narrow, very minutely reticulated, 

 shorter by one line than the hind wings; the greatest breadth at half l!ie 

 length; large areolets irregular, not conspicuous. Hind wings pellucid ; 

 veins greenish white; apical patch pale luteous. Length of the body 

 12 lines; expansion of the fore wings 36 lines. 



It may be distinguished from the three Mexican species by the pro- 

 thorax, which is finely punciured and has not elevated borders. It is 

 between M. subaquafe and 31. decoratum as regards the keel of the vertex, 

 which is less equal in breadth than that of 31. subaqitale and less abruptly 

 attenuated than that of M. decoratum, and it differs from both these 

 species in having a longer oviduct. It also differs from M. decoratum in 

 the shape of the cerci. 



a, h. Jamaica. From Mr. Gosse's collection. 



]3. MlCROCENTRUM PLANUM. 



Foem. Viride ; verticis carina brevis, conica, sulcata ; labrum albidum ; 

 prothoracis discus linea longitudinaii lineisque duabus transversis 

 impressis, carinis lateraiibus paiiidioribus ; oviductus abdominis 

 dimidio brevior ; femora postica alarum antivarum dimidio valde 

 lonyiora ; al(e anticce fusiformes ; alee posiicce diaphancE, striga 

 apicali lata viridi. 



Female. Grass-green, smooth, shining. Head nearly as broad as the 

 prolhorax; vertex with a short conical furrowed keel; front whitish about 

 the fore border, forming a cone between the antennae; labrum whitish. 

 Eyes tawny, prominent, nearly round. Disk of the prolhorax flat, slightly 

 widening hindward, with a longitudinal impressed line and with two trans- 

 verse impressed lines, of which the fore one is much more deeply angular 

 than the hind one ; lateral keels pale green, well defined ; fore border very 

 slightly excavated; sides and hind border rounded. Mesoslernum more 

 deeply notched than the metasternum. Oviduct deep, much curved, less 

 than half the length of the abdomen. Legs slender; spines minute ; hind 

 femora much more than half the length of the fore wings. Fore wings 

 fusiform, minutely reticulated; cosla less rounded than the interior border ; 

 large areolets irregular. Hind wings pellucid ; veins pale ; apical patch 

 green. Length of the body 7^ lines ; expansion of the fore wings 

 28 lines. 



The form of the fore wings does not agree with that of any of the 

 species of this genus described by De Saussure. 



a. Sanlarera. From Mr. Bates' collection. 



