A, 

 V 1 



LOOUSTID^E. 441 



V. Alae posticae sectoribus obscuris. 



A- Antennae non fasciatae. - innotatus. 



Antennae fasciatae. inornatus. 



r V. Atae posticae sectoribus albidis. - immunis. 



XXX. Prothorax vix sulcatus. - regina. 



B. Prolhoracis discus dentatus. - r - 1 - marmoratus. 



1. MERONCIDIUS OBSCUKUS. 



obscurus, Serv. Rev. 53; Hist. Orth. 449, pi. 10, f. 2 Locusta coriacea? 

 Fabr. Ent. Syst. ii. 40 Acanthodis glabrata, Burm. Handb. Ent. ii. 

 700. 



Cayenne. 



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

 apice obtusa, labro flavescente ; prothorax scaber, marginc postico vix 

 concavo ; pedes crassi ; alee anticce angustee, subtiliter reticulates, 

 areolis nonnullis magnis ; alee posticce cinerece, fusco venosee, paullo 

 breviores. 



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

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

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

 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 slightly 

 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 the third is very small ; four anterior tibiae with two 

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

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

 at the tips, minutely reticulated, the areolels 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 

 diverging from each other beyond the 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. MERONCIDIUS AQUILINUS. 



Gryllus (Tettisjonia) aquilina, Linn. Mus. Lud. 133. Stall, Saut. et Grill- 

 pi. 9, f. 34 Locusta aquilina, Dey. Ins. iii. 450, pi. 38, f. 6; pi. 39, 

 f. 1 Acanthodis aquilina, Serv. Rev. 54; Hist. Orth. 451. Burm. 

 Handb. Ent. ii. 701. 



Brazil. Surinam. 



