1 H6 GEO. H. HORN, M. D. 



It may be the cause of surprise to some readers that more mention 

 has not been made of the habits of the species and their food plants, 

 as they are all more or less injurious to vegetation, and the economic 

 literature contains considerable information on this point. 



In explanation of this it may be stated that the various collectors 

 are not in agreement as to specific names in their collections, and I 

 have preferred to give only such information as has been supplied 

 with specimens and have not trusted to their economic literature 

 unless confirmed by positive data. 



Analytical Table of Groups of Halticini. 



Last joint of hiud tarsi globosely inflated 2. 



Last joint of hind tarsi not globosely inflated, usually slender, but sometimes 



thickened when viewed laterally .3. 



2. — Anterior coxal cavities closed behind, elytra punctate-striate. 



II. MONOPLATI. 

 Anterior coxal cavities open behind. 

 Elytra punctato-striate ; surface pubescent ; thorax much narrower than 



the elytra III. PSEUDOLAMPSES. 



Elytra with confused punctuation ; surface glabrous ; thorax vei-y little 



narrower than the elytra IV. CEDIONYCHES. 



3. — Anterior coxal cavities open behind 4. 



Anterior coxal cavities closed behind 8. 



4.— Mesosternum very short, nearly concealed by the approximation of the pro 



and metasterna ; body orbicular or hemispherical VII. MNIOPHIL^. 



Mesosternum always visible, usually moderately long ..5. 



?>. — Prothorax without transverse ante-basal impression 6. 



Prothorax with transverse ante-basal impression 7. 



6. — Posterior tibipe broadly sulcate on the posterior edge and with a more or less 

 elevated margin each side, obliquely sinuate on the outer margiu near the 



apex; last joint of posterior tarsi thickened V. ASPICEL^. 



Posterior tibipe faintly or not grooved, without sinuatiou ; last joint of hind 

 tarsus slender. 

 First joint of hind tarsus short as compared with the tibia and rather 

 broad ; claws appendiculate ; species of moderate or larger size. 



VI. DISONYCHJE. 

 First joint of hind tarsus slender and long; claws simple: species of 



small size XV. APHTHON^. ^ 



7.— Transverse impression usually feeble, not limited at each extremity. 



VIII. HALTIC^. t- 

 Transverse impression deep, limited at each end by a longitudinal jilica. 



IX. LACTIC^. 



