16 . LONGICORNIA. 
1. Tristachycera viridis. (Tab. III. fig. 7.) 
Tristachycera viridis, Bates, loc. cit. p. 171. 
Hab. Nicaragua, Chontales (Belt). 
ACHRYSON. 
Achryson, Serv. Ann. Soc. Ent. Fr. 1833, p. 572. 
Exclusively American, extending a little beyond the tropics, both north and south. 
Eleven species have been described. 
1. Achryson surinamum. | 
Cerambgx surinamus, Linn. Syst. Nat. i. p. 632 (1767). 
Cerambyx surinamensis, Oliv. Ent. no. 67, p. 42, t. 18. f. 93 (1795). 
Stenocorus circumflexus, Fab. Mant. Ins. i. p. 144 (1787). 
Var. chontalense, Bates, Trans. Ent. Soc. 1872, p. 171. 
Hab. Norta America, Middle States—Mzexico; Guatemata; Nicaragua; Costa 
Rica.—Soutu America, generally distributed to Paraguay. 
HAMMATICHERUS. 
Hammaticherus, Serv. Aun. Soc. Ent. Fr. 1834, p. 15. 
Exclusively American, but closely allied to Plocederus, which is an African and 
Indian genus. Hight species of Hammaticherus are known. 
1. Hammaticherus castaneus. (Tab III. fig. 2.) 
Hammaticherus castaneus, Bates, Trans. Ent. Soc. 1870, p. 250. 
Hab. Nicaracua, Chontales (Belé, Janson).—Soutn Brazit. 
2. Hammaticherus mexicanus. 
Hammaticherus mexicanus, Thoms. Class. Long. p. 196; Bates, Trans. Ent. Soc. 1872, p. 171. 
Hab, Mexico. 
ATYLOSTAGMA. 
Atylostagma, White, Cat. Long. Col. B. M.i. p. 97. 
The following is the sole known species :—— 
1. Atylostagma politum. 
Atylostagma politum, White, loc. cit. p. 97, t. 3. £.5. 
Hab. Honpuras (Dyson). 
SPHALLENUM. 
Sphallenum, Bates, Trans. Ent. Soc. 1870, p. 253. 
Six species, exclusively Tropical-American. 
