72 NOTES ON MEXICAN ANTS. 











more or less flattened above, with the sides expanded into 
flattened marginal plates, concealing or partly hiding the 
eyes. The peduncle consists of two nodes, the corslet is 
spinose, and the face is grooved in front for the reception l 
of the antennæ. 
Cryptocerus laminatus Smith. (Journal of Entomology, 
1860, p. 77.) Brazil. “This species lives at Cordova, m 
the same places as the next, but it is rarer and more soh 
tary.” 
Cryptocerus multispinosus. (Fig. 11.) This is the most 
common species of Cryptocerus in the environs of Cordova, 
where it lives in the trunk of certain trees, especially those of — 
the Croton sanguiferum, Cedrela odorata, Spondias chilias,* 7 
etc. These ants show little vivacity, remaining stationary 4 — 
good part of the day at the entrance of the holes which con- 
duct to their nest. In the middle of the day one sees them | 
running about fallen trunks, without apparent order or aim. 
When one attempts to seize them, they elevate the abdomen 
while running, after the manner ascribed to another kind of 
ant, the Cechintonadies Montezumia. 

Note.—The new species mentioned in this paper will soon be | 
scribed in the Proceedings of the Essex Institute. 

EXPLANATION OF PLATE II. 
Fig. 1. Formica fulvacea, worker major. 
Fig. 2. Tapinoma tomentosa, worker. 
Fig. 3. Polyrhachis arboricola, worker; a, side view of thorax and 
Fig. 4. Extatomma ferruginea, worker; a, side view of the peduncle 
abdomen. 
Fig. 5. i Mexicana, worker major; a, front view of the head. 
Fig. 6. Eciton Mexicana, worker minor, with a front view of the he 
Fig. 7. Eciton Sumichrasti, worker minor. 
ig. 
Fig. = Gicodoma Mexicana, worker major. 
Fig. 11. Cryptocerus multispinosus, worker. 


