840 EXPLANATION OF PLATES. 



Fig. 19. Head of a Reduvius from the side, as an example of the sucker 

 (rostrum frontale) in the Heteroptera ; see p. 439. 



PLATE X. INSECTS. 



Fig. 1. Gryllus ccerulescens, p. 453. 



Fig. 2. Phi/Ilium siccifolium, p. 460, a female, the figure somewhat 



diminished. 

 Fig. 3. Head of a species of Empusa, to exhibit the pectinate antennae, 



the character of the males, p. 461. 

 Fig. 4. Blatta lapponica, p. 462. 

 Fig. 5. Eumorphus marginatus, p. 469. 

 Fig. 6. Adesmus Wallichii HOPE, from Java, as an example of Ceramby- 



cina, Lamia, p. 478. 

 Fig. 7. Entimus scapulosus CHEVKOLAT, as an example of the Curcu- 



lionita. This species belongs to the same sub-genus as Curculio 



imperialis, p. 487. 



Fig. 8. Lytta vesicatoria, the Spanish fly, p. 500. 

 Fig. 9. Melolontha vulgaris, p. 514. 

 Fig. 10. Under jaw of a Carabus magnified, to illustrate the primary 



characteristic of the Carabicina, namely the two palps, see 



p. 545. 



PLATE XI. ARACHNIDS AND CRUSTACEANS. 



Fig. 1. Oral organs and shears (first pair of unchanged feet) of Portunus 

 mcenas, p. 679. See p. 600; a, upper jaws; a,', palps; b, first pair 

 of under jaws; c, second pair of under jaws; d', first; d", second; 

 d" f y third pair of foot jaws; fl. jlagrum, or the palp attached to 

 these jaws; a, first pair of unchanged feet, the shears or claws. 



Fig. 2. Oral organs and first pair of feet of /Scorpio reticulatus, natural 

 size. According to the theory of SAVIGNY (p. 557), the upper 

 jaws p" correspond to the second pair of foot-jaws of the 

 decapod crustaceans; the under jaws p f " to the third pair of 

 these foot-jaws ; the first pair of feet, /?, correspond to the 

 second pair of feet of the decapoda. Between these feet two 

 triangular plates are seen ; see the note, p. 557. 



Fig. 3. Nymphon grossipes (p. 573) in its first state, magnified (natural 

 size about } line) ; after KROEYER'S Tidsskr. in. PI. 3, fig. 26 ; 

 fig. 4; comp. p. 571. 



Fig. 4. Pycnogonum littorale, p. 573, after GUERIN Iconogr., Arachn. 

 PL 4, fig. 1, nat. size. 



