Invertebrate Gallery of the Indian Museum. 95 



in which the antennae are clubbed at the tip, and are 

 always carried either erect or extended; and (2) the 

 Heterocera, or Moths (Cases 115B to 125C) in which the 

 antennae vary considerably in form, but are not clubbed 

 at the tip, and are never held erect or extended in repose, 

 but are then almost invariably folded away beneath the 

 wings. A good collection illustrative of both sub-Orders 

 is exhibited in Cases 98 A to 125C. For the Indian Rho- 

 palocera, or Butterflies, the student should consult Mr. de 

 NiceviWc's '* Butter/lies 0/ India, Burma, and Ceylon", 

 published by the Calcutta Central Press Company. 



viii. HEXAPODA COLEOPTERA. 

 [€nsz& 82^-93 U]. 



This very large Order comprises the Beetles, which are 

 characterised by having mouth-parts of the typical biting 

 and chewing type ; by having the forewings hardened to 

 form horny " elytra ", or cases for the protection in repose 

 of the membranous hindwings, which alone are used in 

 flight ; and by passing through a complete metamorphosis. 

 In some cases the elytra alone are present ; or the elytra 

 may be soldered together : and in a few forms, e.£., the 

 females of some species of glow-worms, the wings are 

 altogether wanting. 



ix. HEXAPODA HYMENOPTERA. 

 [OTase© 93(11-9 7f]. 

 Insects with the mandibles adapted, like those of 

 Orthoptera, Neuroptera, and Coleoptera, for biting, but 

 with the 1st maxillae and 2nd maxillae (labium, or lower 

 lip) elongated and peculiarly modified for licking and 

 sucking (Bees). Wings are sometimes absent, but are 

 usually present, and then the forewings interlock with the 

 hindwings on each side by means of booklets on the outer 

 edge of the latter. The abdomen is much narrowed at 

 its junction with the thorax to form a stalk, and in the 



