1923] Ants of the Genera Alyopias and Acanthoponera 
189 
latter regions conspicuously long. The frontal carinse with 
their accompanying scrobes extend to the posterior corners of 
the head and there curve downward and forward to terminate 
under the e}^es, as in the typical goeldii. 
Described from a single specimen found running on a cacao 
tree at Trece Aguas, Alta Vera Paz, Guatemala by Messrs. 
E. A. Schwarz and H. S. Barber. 
This may be a distinct species, but as I have seen no spe- 
cimens of the typical goetdii, with the description of which it 
agrees in quite a number of characters, it may stand provisionally 
as a subspecies. 
Acanthoponera niucronata (Roger). 
Ponera mucronata Roger, Berlin. Ent. Zeitschr. 4, 1860, p. 299 
^ 9 . 
Ectatomma (Acanthoponera) mucronatuni Alayr. Verb. zool. bot. 
Ges. Wien 12, 1862. p. 962; ibid. 37, 1887, p. 540; Emery, 
Bull. Soc. Ent. Ital. 26, 1894, p. 143 9 ; Forel, Biol. Centr. 
Amer. Hymen. 3, 1899-1900, p. 9 ^ 9 • 
Ectatomma mucronatuni Dalla Torre, Cat. Hymen. 7, 1893, 
p. 25 ^ 9 . 
Acanthoponera niucronata Emery, Gen. Insect. Ponerinae 1911, 
p. 36 ^ 9 . PI. 2, Fig. 2; Forel, Ann. Soc. Ent. Belg. 56, 1912, 
p. 34 y ; Luederwaldt, Notas Myrmecologicas, Sao Paulo 
1918, p. 6. Type locality: Brazil (von Olfers). 
Brazil: Matto do Governo, Sao Paulo (H. Luederwaldt); 
Corcovado, near Rio de Janeiro (A. Muller); Matto Grosso. 
Var. minor Forel. 
Ectatomma (Acanthoponera) mucronatuni var. minor Forel, Biol. 
Centr. Amer. Hymen. 3, 1899-1900, p. 9 y . 
Acanthoponera mucronata var. minor Emery, Bull. Soc. Ent. 
Ital. 28, 1896, p. 33 ^ ; Gen. Insect. Ponerinse 1911, p. 36 ^ . 
Type locality: Teapa en Tabasco, Mexico (H. H. Smith). 
Costa Rica: Suerre (A. Alfaro). 
