401] COLORS OF TIGER BEETLES- SHELFORD 7 



and experimental modification of a number of species which has assisted 

 in the analysis of the color patterns. 



The collections studied have covered most of the species of the 

 family, which is divided into several tribes by W. Horn in the Genera 

 Insectorum (1915). The subfamilies herein named were in part given 

 as families in the Systematischer Index of the same author (190<; . 

 in which lie presented a preliminary list of the species which he later 

 published in the Genera Insectorum. Accordingly, in my previous papers 

 on the subject (1906, 1908, 1912, 1914, 1915) the ''Index" was followed 

 almost entirely in the matter of nomenclature and order of arrange- 

 ment. 



The groups represented in the family as outlined in Genera Insect- 

 orum are as follows : 



Subfamily Ctenostomini (tree dwellers) Number of species 



Pogonostoma; Madagascar 32 



Ctenostoma ; tropical America 45 



Subfamily Collyrini (nearly all tree dwellers) 



Tricondyla ; India 2 . 



Collyris; Oriental region ! 104 



Subfamily Mantichorini (ground dwellers) 



Mantica; Africa 1 



Mantichora ; Africa 5 



Subfamily Megacephalini (ground dwellers) 



Platychila ; South Africa 1 



Pycnochila ; South America 1 



Amblychila ; Western U. S. A 2 



Omus; Western IT. S. A 4 



Aniaria; Northeastern South America 1 



Megacephala; southern U. S. to Argentine, Africa, 



Arabia, Persia, Australia 63 



Oxychila ; middle America 25 



Pseudoxychila ; Andes, Costa Rica to Bolivia 1 



Chiloxia ; Andes of Ecuador to Bolivia 1 



Eucallia ; Andes of Ecuador and Columbia 1 



' Subfamily Cicindelini ; ground dwellers 



Dromica; southern half of Africa 82 



Prothyma ; Africa, Madagascar, Asia, and the Malay 



Archipelago 50 



Dilatotarsa ; Malay Archipeligo 1 



Caledonomorpha ; New Guinea 1 



Distipsidera ; Australia and New Guinea 8 



Caledoniea ; New Guinea 9 



