Genus Centrinus and its Allies. 323 
Claws united at the base. 
Canal nearly obsolete or absent. 
Pectus with a circumscribed central 
CAME Yrs tet atau hep orgs er akare Camelodes. C. Leachii, Kirby. 
Pectus entire. 
Mesosternum raised, more or less 
bilobed in fronts seis adres Diastethus. C. tumidus, Boh. 
Mesosternum depressed ........ Pardisomus. C, guttatus, n. sp. 
Canal distinct. 
Coxee approximate. 
Corbels of posterior tibize cavern- 
OUS +... ee ee eee eeerear ces Telemus. C. cestrotus, Germ. 
Corbels of posterior tibize open .. Sympages. C. egregius, n. sp. 
Coxe: separated: G0. 0 tcler saree oa, Orissus. C. Meigenti, Boh. 
To the genera above not represented by new species the 
following characters will apply :— 
Centrinus.—Canal obsolete or replaced by a circumscribed 
cavity ; anterior coxe separated ; femora mutic; claws free ; 
elytra broader than the prothorax. 
Gereus.—Canal obsolete ; anterior coxe separated ; femora 
mutic ; claws free ; elytra not or scarcely broader than the 
prothorax. 
Balbus.—Canal obsolete; anterior coxe separate; pro- 
sternum on a level with the coxe; femora mutic ; claws free. 
Lydamis.—Canal distinct; anterior coxe approximate ; 
scrobes lateral; femora toothed; claws free. 
Rhianus.—Canal distinct, prolonged between the anterior 
coxe ; femora mutic; claws free. 
Camelodes.—Canal replaced by a circumscribed cavity ; 
anterior cox separated; mesosternum raised; femora 
toothed ; claws united. 
Diastethus—Canal absent; anterior coxe separated ; 
mesosternum raised, often emarginate anteriorly ; femora 
toothed ; claws united. 
Telemus.—Canal distinct; anterior cox approximate ; 
mesosternum depressed or sloping towards the prosternum ; 
femora mutic; corbels of the posterior tibia cavernous ; claws 
united. 
Orissus.—Canal distinct ; anterior coxee separated ; meso- 
sternum depressed or sloping ; femora toothed; claws united. 
In some species of Centrinus, Camelodes, &c. the males are 
armed with horizontal spines projecting from the pectus, on 
each side of where the canal is or should be; but I hesitate 
to consider this a generic character. Xentsus and Enops, 
new genera, are allies. 
