HYMENOPTERA. 1S5 



8. (ECODOMA INSULARIS. 



Atta insularis, Guer. Icon. Reg. Anim. iii. 422. 3 ^ . 

 Hah. Cuba. 



9. (EcoDOMA Mexicana. pi. X. fio;. 20. B.M. 

 Atta fervens. Say, Bost. Journ. Nat. Hist. i. 290. 



Female. Length 8-9 lines. — Obscurely ferruginous, nearly 

 black ; closely resembling CE. cephalotefi, but the thorax is more 

 elongate ; the second node of the abdomen wider, with the 

 lateral angles jiroduced and acute ; the base of the abdomen 

 truncated, the first segment longer than broad ; in other respects 

 resembling CE. cephalotes, but more hairy or downy. 



Male. — In size and form resembling the male of CE. cepha- 

 lotes ?, but of a uniform pale reddish yellow; the second abdominal 

 node much wider. 

 Hab. Mexico. 



The insect described as lavlgata is probably the worker of 

 this species ; in the Museum are several specimens from Mexico. 



Division 2. 



The first submarginal of equal width throughout, transverse 

 at both extremities, the recurrent nervure uniting with the trans- 

 verse nervure at the base of the marginal cell ; body tuberculate. 



10. (Ecodoma aspersa. pi. X. fig. 1/. B.M. 

 Female. Length 3i lines. — Brown-black : the head and abdo- 

 men roughened, covered with short sharp spines ; the mandibles, 

 scape, sides of the face, its anterior margin, the carinie between 

 the antenna; and the spines on the vertex, ferruginous. Thorax 

 ovate, with two bright ferruginous longitudinal lines on the meso- 

 thorax; the scutellum and post-scutellum ferruginous; a straight, 

 stout, acute spine on each side of the thorax in front, and two longer 

 beut acute ones on the metathorax, ferruginous ; wings yellowish 

 hyaline, the nervures pale ferruginous ; the legs of moderate 

 length, roughened with short spines and stiff" hairs. Abdomen : 

 the first node armed with a stout blunt spine on each side ; the 

 second node with numerous short spines on each side, the sides 

 red; the first segment flattened towards the base, wliich has a 

 ferruginous spot on each side; the apical margins of the seg- 

 ments more or less ferruginous. 



Hab. Brazil. 



The close resemblance between this species and CB. hystrix 

 leaves little doubt of the latter being the worker of the present 



