OF INSECTS. 316 



many caterpillars, which, if left to multiply unchecked, 

 would totally consume many of our most useful plants. 



The genus Joppa is principally distinguished by 

 the form of the antennae, which are much thickened 

 beyond the middle, and then terminate in a point, 

 as is well seen in the handsome species (J. Joppa,) 

 figured on PL XXXI. 



Another example of this genus is given on PL 

 XXVI. fig. 24, /. antennata, (Fabr. Syst. Piez. 122, 

 Ent. Syst. 158, Ichneumonia,) from a drawing by 

 Mr. Westwood. It is a native of South America. 

 The specimen is in Mr. Hope's collection. 



EPHIALTES MANIFESTATOR. 



PLATE XXXII. Fig. 1. 



Gfrav. Pimpla manifestator, Fabr. Syst. Piez. Ichneumon mani- 

 festator, Linn. Marsham in Linn. Trans. III. 23, PI. 4, fig. 

 1-5. 



THE subgenus ephialtes of Gravenhorst is charac- 

 terised by a long abdomen, which is generally tuber- 

 culated, the anterior segments longer than broad, 

 those at the apex with a longitudinal groove on the 

 underside in the females; ovipositor long. The 

 species above named is from eleven to fifteen lines in 

 length, the female being largest. Body black, palpi 

 and labrum ferruginous, thorax sometimes with a 

 ferruginous spot at the base of the wings, the latter 

 light smoke colour; legs long and rather slender, 

 fulvous or rufous, the posterior tarsi and tibiaa, and 

 sometimes the knees, fuscous. Ovipositor longer 

 than the body, the tube chestnut red. 



