LocusTir..®. 441 



V. Alae posticae sectoribus obscuris, 



^. Antennae non fasciatae. - - . - . innotatus. 



\j\^. Antennae fasciata. ------ inornatiis. 



VV. AliB posticaj seetoribns albidis. - - - - immuni;;. 



XXX. Piotborax vix sulcatns. _ - - . . leijina. 



B. Prolhoracis discus dentatus. - - - - maimoratus. 



1. MeROXCIDIUS OBSCURb'S. 



obscums, Serv. Rev. 53 ; Hist. Orth. 449, pi. 10, f. 2 — Locnsta coriacea? 

 Fabr. Ent. Syst. ii. 40 — Acantbodis glabrata, Burm. Handb. Ent. ii. 

 700. 



Cayenne. 



Var. ? FcEm. Fulvus ; caput breve, carinula albida lanceolata sulcata 

 apice obtuaa, Inbro Jlavescente : prothorax scaber, mnrgine poslico vix 

 concavo ; pedes crassi ; alcp antic(E anguslee, subti/iler reticulata, 

 areolis nonnullis magnis ; alee posticce cinereee, fusco venosce, paullo 

 breviores. 



Female. . Tawny. Head smooth ; keel of tbe vertex whitish, lanceo- 

 late, furrowed, obtuse at tlie tip; front transversely and very finely striated, 

 lanceolate between the sockets of the antennae ; labrum yellowish. Antennce 

 much more than twice the length of the body. Prothorax scabrous, paler 

 on each side, with two strongly impressed transverse lines; fore border 

 slightly rounded; sides straight ; hind border slightly elevated, very sligbtly 

 excavated in the middle. Legs thick ; spines small, with black tips ; four 

 anterior femora with three spines in one row; hind femora four-sevenths of 

 the length of the fore wings, with six spines, of which the first and second 

 are rudimentary and tbe third is very small ; fmir anterior tibiae with two 

 rows of spines ; hind tibiae with four rows, of which the upper one and tbe 

 under one are less complete than tbe others. Fore wings narrow, rounded 

 at the tips, minutely reticulated, the areolets thus formed in front of the 

 scapular vein larger than those elsewhere ; primary areolets very large, 

 scapular and externo-medial vein separate along the whole length, slightly 

 diverying from each other beyond tbe middle ; externo-medial emitting two 

 forked branches, one beyond the middle, the other nearer the tip ; interno- 

 medial forked near the tip. Hind wings cinereous, a little shorter than the 

 fore wings; veins brown. Length of the body 18 lines; expansion of the 

 fore wings 45 lines. 



a. ? From Mr. Children's collection. 



2. MeEOXCIDIUS AQrriLINCS. 



Grylhis (Tetligonia) aqnilina, Linn. Mus. Lud. 133. Stall, Saut. et Grill- 

 pi. 9, f. 34 — Locusta aqnilina, De</. Itis. iii. 450, i)i. 38, f. 6 ; pi. 39, 

 f. 1 — Acantbodis aqnilina, 5rry. Rev. 54; Hist. Orth. 451. Burm. 

 Handb. Ent. ii. 701. 



Brazil. Surinam. 



