LIST OF HOMOfTEROUS TNSECTS. 571 



and are very slightly curved ; keel impressed on each side behind 

 the horns, oWanceolate, very long, extending far beyond the tip of 

 the abdomen, black towards the tip, which is very acute : abdomen 

 luteous above, having on each side a broad black stripe, which is 

 interrupted on the hind border of each segment: legs tawny : fore- 

 wings brown, long and narrow ; veins yellow ; hind-wings almost 

 colourless, gray along the hind bordere ; veins black. Length of the 

 body 7 lines; of the wings 13 lines. 

 a. ? From Mr. Argent's collection. 



18. Hemiptycha lata, Fem. 



Nigra, luteo guttata ; abdominis segmentorum margines postici 

 fulvi ; alee antica nigricantes, ad discos f usees ; aim posticcB 

 cinerece. 



Black, shining: head and fore-chest very broad : head trans- 

 verse, short, irregularly triangular, finely striated, somewhat im- 

 pressed, narrower than the ibre-chest ; hind border undulating ; 

 fore borders slightly concave, somewhat retusc ; face almost smooth ; 

 its hind border semicircular, much less than half the length of the 

 head: fore chest roughly punctured, adorned with luteous dots, 

 slightly impressed in front, veiy thick, armed on each shoulder with 

 a very stout, triangular, almost pointed horn, whose outer sides are 

 slightly concave and almost angular ; the keel behind the horns has 

 two longitudinal furrows, and between them the fore-chest is very 

 convex and much inclined ; on their outer sides it is nearly flat 

 and but slightly inclined ; opposite the last abdominal segment 

 it is much attenuated and compressed, and extends beyond the tip 

 of the abdomen, from which it slightly diverges : hind borders of 

 the abdominal segments tawny : fore-wings blackish ; their disks 

 brown : hind-wings gray ; veins black. Length of the body 5i 

 lines ; of the wings 1 3^ lines, 

 a. ? From Mr. Argent's collection. 



19. Hemiptycha bbevis, Mas. 



Nigra ; ventris segmentorum margines postici pedesque ferruginei ; 



alee anticte fusca;, basi nigricantes ; aliE posticee subcinerefe. 



Black, shining, short: head and fore-chest very broad: head 



transverse, short, irregularly triangular, striated, impressed, narrower 



than the fore-chest ; nind border undulating ; fore borders slightly 



