LOCUSTIDiE. 453 



mate, united near the tip. Hind wings cinereous ; veins tawny. Length 

 of" the body 14 lines; expansion of the fore wings 42 lines. 



a. Bogota. From Mr. Stevens' collection. 



37. Meroncidius inobnatus. 



Mas. Fulviis, sal robiistus ; caput testaceum, lahro albido-testaceo ; 

 prulhorax suhliiiler tubcrculalus ; pedes robusti; alee anlicce cinerece, 

 sal angustce, teslaceo reticulata, fulvo venosce ; alee poslic<s obscure 

 cine re a. 



Male. Tawny, rather stout. Head testaceous; front thinly puuctured ; 

 lahruni whitish le^taceous. Eyes lawny, round, very prouiiuent. Pro- 

 thorax minutely tuberculate, with two strongly impressed transverse lines 

 and with a very indistinct lou;iitudinal impressed line. Legs stout; spines 

 with black lips ; hind femora about two-thirds of ihe length of the fore 

 wings. Fore wings cinereous, rather narrow, longer hy one line and a half 

 than the hind wings ; veins tawny; reticulation pale testaceous; scapular 

 vein anil extenio-medial paiallel till near the tip, where the former 

 diverges to the cosla ; tympanum pellucid in the right wings, brown in left 

 ones. Hind wings dark cinereous; veins tawny. Length of the body 

 ]S lints; expansion of the fore wings 43 lines. 



a. Muule Video. Presented by C. Darwin, Esq. 



Var. ? Foem. Piceus ; caput fulvuin, cli/peo piceo ; antenna; nigra; 

 prothorax tubcrculalus, Jiavn marginatus ; abdomen sordide olivuceum, 

 segmenlis venlrulibus viridibus nigra niarginatis ; oviduclus niger, 

 basi teslaceus ; pedes robusti, tarsis subtus nigris ; alee aniica fulva, 

 cosla paliide jiava ; uUe poslicce obscure cinerece. 



Female. Piceous, with ilie usual structure. Head tawny, minutely 

 punctured; clypeus piceous. Eyes blackish, prominent, nearly round. 

 Antennae black. Prothorax tuberculate, with a smooth pale yellow rim 

 and with two strongly impressed transverse lines; a longitudinal impressed 

 line apparent only where it intersects the binder transverse line. Abdomen 

 dingy olive-green ; under side l)lack, the disk of each segment green. 

 Oviduct black, hardly curved, testaceous towards the base, as long as the 

 abdomen. Legs stout; spines with black lips; hind femora a litlle less 

 than two-thirds of the leugih of the fore wings; taisi black beneath. Fore 

 wings tawny, longer by two lines than the hind wings; areolets large; 

 costa pale yellow; scapular and externo-medial approximate and parallel 

 to each other till near the tip, where ihey are ramose. Hind wings dark 

 cinereous; longitudinal veins tawny ; irans\erse veins blackish. Length 

 of the body 21 lines; expansion of the fore wings 51 lines. 



a. ? From Mr. Children's collection. 



Var.? Mas. Teslaceus; antenna picea, teslaceo fascia la ; prothorax 

 sublililer tuberculalus ; styli subclavaii ; pedes robusti ; ala anlicce 

 angusla,nigricanle subpunctala, margine inleriore nigricanle-notato ; 

 ala poslica obscure cinerea. 



