Ixiii 



rifcteromera: Phaleria, Helops. Stapliylinidte : Homalota (1 sp.), 

 Othius. Here we are carried back to a remoter epoch for the 

 introduction of the winged ancestors of the Madeiran species, 

 since not only have the wings become aborted, but the insects 

 themselves have become modified into distinct and often very well- 

 marked species. 



The next category consists of apterous genera which are 

 peculiar to Madeira and the other Atlantic islands, but which are 

 allied to winged groups, as follows : — 



Elliptosoma. — Closely allied to Loricera, winged. 

 Eurygnatlius. — An abnormal form of Licinides, most of which 



are winged. 

 Zargus. — An abnormal form of Chlfeniides, winged. 

 Tlialassopliilus. — Allied to Treclms, winged. 

 Tarphius. — Belonging to the Colydiidse, most of which, Mr. 



Pascoe informs me, have wings. 

 Coptostetlms. — Allied to Cryptoliypnus, winged. 

 CaulopJiilus. — Allied to Phloeophagiis, winged. 

 Lii')ommata, Mesoxenus, Caulotriipis. — Anomalous genera of 



Cossonides, which are often winged. 

 Acalles, Torneuma. — Aberrant genera of Cryptorhynchides, 



most of which are winged. 

 Echinosoma. — Doubtful affinities. 

 Atlantis, Cyphoscelis, Laparocerus (Laparocerides). — A very 



isolated group. 

 Anemophilus, ScoUocerus. — Allied to Trachyphlceides, some of 



which are winged. 

 Lichenophagus. — Allied to Canopsis and Omias, some of which 



are winged. 

 Xenorchestes. — Allied to Choragus, winged. 

 Ellipsodes. — Closely allied to Crypticus, some of which are 



winged. 

 Hadrus. — Belongs to an apterous group of Opatrides, many of 



which are winged. 

 Macrostethus. — Belongs to Coelometopides, all of which are 

 apterous, but comes next to the " Tenebrionides vrais," of 

 Lacordaire, which are mostly winged. 

 Xenomma. — Belongs to the Aleocharides, which are winged. 

 Mecognathiis. — Allied to Sunius, winged. 

 Metopsia. — Allied to Phlosohium, winged. 



K 



