HALT1CIM. 



285 



15. Prosternurn large and elevated ; meso- [p. 316. 



sternum arched ; labrum large .... Sph^roderma, Stephens, 

 Prosternurn narrowly elongate ; meso- 

 sternum strongly transverse, wi- 

 dened at the middle ; labrum normal Tvalia, Jac, p. 330. 



16. First segment of posterior tarsi very 



long, almost as long as, or at any 

 rate never less than half the length 



of, the tibia Longitarsus, Latr., p. 333 



First segment of posterior tarsi 

 always less than half the length of 

 the tibia 17. 



17. Second and third segments of the 



antennae always small; posterior 



edge of elytra sparsely set with very [p # 3Q\ m 



short hairs Luperomorpha, Weise, 



No such combination of characters . . 18. 



18. Posterior tibiae depressed at the apex, 



which is divided into two very short 

 lobes, each usually ending in a short 



spinule . Aphthona, Chevr., p. 366. 



Posterior tibiae not depressed at the 

 apex, which is rounded and fur- 

 nished with a small spinule placed 



in the middle of the terminal ^ 377^ 



border Phyllotreta, Foudras, 



19. Small ovate insects (3 mm. long), with 



the lateral borders of the pronotum 

 not dilated or margined (except at 



the anterior angle) Morylus, Jac, p. 381 



Much larger, elongate insects (more 

 than 3 mm. long), with the lateral 

 borders of the pronotum narrowly 



dilated or margined Seb^the, Baly, p. 382. 



20. Elytral punctures regularly arranged 



in longitudinal lines 21. 



Elytral punctures not so arranged. . . . 23. 



21. Body constricted at the junction of 



elytra and prothorax, pointed at the 

 apex of the elytra ; antennae longer 



than the body Alytus, Jac, p. 404. 



No such combination of characters . . 22. 



22. Elytral rows of punctures very fine . . Philogeus, Jac, p. 405. 

 Elytral rows of punctures very deep 



and larger Manobia, Baly, p. 407. 



23. Body cylindrical , prothorax quadrate ; 



posterior tibiae short, broadened to- 

 wards the apex, and channelled ; 

 first segment of posterior tarsi as 



long as the following two together. Tegyrius, Jac, p. 409. 

 No such combination of characters . . 24. 



24. Small insects (2-3 mm. long) ; an- 



tennae slender, second segment 

 stouter than, but otherwise almost 



equal to, third, fourth shorter than [p # 41 j 



third , Herjosophaga, Foudras, 



