for the Microscope. 71 



524. WING-HOOKS OF HIVE-BEE (Apis mellifica). These 

 hooks have been long known, as well as those of the 

 Humble Bee, and are arranged in a long series. 



525. WING-HOOKS OF PLANT-LICE (Aphis). The wings 

 of most species of plant-lice have small hooks of a similar 

 character to the above. 



526. ANTENNA OF ENCYRTUS (Encyrtus punctipes). 

 This insect is a small parasite, which attacks a species of 

 Coccus, and may be hatched oftentimes from female scale- 

 insects (Cocci) attached to living twigs of hornbeam. 

 The antennae are clavate, jointed, and hairy. (PL VII., 



fig- 34-) 



527. ANTENNA OF EUPLECTUS (Eiiplectus). These are 

 little beetles, found sometimes in cucumber-frames, but 

 not common. In all the same type of antennae prevails. 

 (PL VII., fig. 35.) 



528. ANTENNA OF COCKCHAFER (Melolontha vulgaris). 

 The antennae of this common insect bear overlapping 

 ovate plates at the tip, which separate like a fan. Those 

 of the female are smaller than the male, and less known 

 to microscopists. 



529. ANTENNA OF WASP-BEETLE (Rhipiphorus para- 

 doxus). A black beetle found in wasps' nests and on 

 flowers. Each joint of the antennae has a branch or spur 

 on the inner side. (PI. VII., fig. 36.) 



530. ANTENNA OF PRIONUS (Priomis coriarius). One 

 of the long-horned beetles. The antennae consist of 

 funnel-shaped joints, inserted one into the other. (PL 

 VII., fig. 37-) 



531. ANTENNA OF WATER-BEETLE (Hydrus piceus). 

 This is a large water-beetle. The singular antennae are 

 slender below, but broad and clubbed above, with lunate 

 joints. (PL VII., fig. 38.) 



532. ANTENNA OF MOLE-FLEA (Pulex Talpce). The 

 pair of jointed antennae which surmount the head of this 

 lively little flea are curious and interesting. (PL VII., 

 fig. 41.) 



533. ANTENNA OF VAPOURER-MOTH (Orgyia antiqua). 

 This very common moth has plumose antennae, each 



