EUDESMUS.—ECTHGA. 127 
EUDESMUS. 
Eudesmus, Serville, Ann. Soc. Ent. Fr. 1835, p. 81. 
Nine species have been described of this genus, remarkable for the tumid and fusiform 
third antennal joint in the males. The genus is peculiar to Tropical America. 
1. Eudesmus posticalis. (Tab. IX. fig. 13.) 
Eudesmus posticalis, Guérin, Icon. Régn. Anim. texte, p. 248°; Bates, Ann. & Mag. Nat. Hist. 
ser. 3, xvi. (1865) p. 1817; ib. Trans. Ent. Soc. 1872, p. 202°. 
Hab. Nicaracua, Chontales (Bel¢*); Sourm America, Amazons”, Brazil’. 
The single Nicaragua specimen taken by Mr. Belt differs a little in the colours of the 
elytra from South-American examples, the subapical brown patch being more deeply 
coloured and the grey being more continuous towards the base. 
CYLICASTA. 
Cylicasta, Thomson, Physis, ii. p. 42 (1868) ; Lacordaire, Gen. Col. ix. p. 682. 
Trestonia (partim), Buquet, Arcan. Nat. p. 45 (1859) ; Bates, Ann. & Mag. Nat. Hist. ser. 3, xvi. 
p. 312 (1865). 
Also peculiar to Tropical America. Many species exist unpublished in collections ; 
the following is the only one hitherto described. 
1. Cylicasta terminata. 
Trestonia terminata, Buquet, Arcan. Nat. p. 47, t. 5. f. 3 (1859) 
Trestonia coarctata, Bates, Ann. & Mag. Nat. Hist. ser. 3, xvi. p. 812 (1865); id. Trans. Ent. Soc. 
1872, p. 202°. 
Hab. Nicaraeva, Chontales (Belt 3) —Sourn America, Cayenne 1, Amazons’. 
1 
° 
ECTHCA. 
Ecthoa, Pascoe, Trans. Ent. Soc. ser. 3, iv. p. 250 (1858). 
Talasius, Buquet, Arcan. Nat. p. 100 (1859). 
The following is the only described species :-— 
1. Ecthosa quadricornis. (Tab. IX. fig. 14.) 
Cerambyx quadricornis, Olivier, Encycl. Méth. vii. p. 466 (1792); id. Ent. no. 67, p. 97, t. 20. £. 158. 
Talasius quadricornis, Buquet, Arcan. Nat. p. 100, t. 5. f. 6. 
Trachysomus faunus, Erichson, Wiegm. Arch. 1847, i. p. 148. 
Hab. Panama, Chiriqui (2iddé).—SouTH AMERICA, Guiana, Amazons, Peru. 
