218 MODERN CLASSIFICATION OF INSECTS. 

and ocelli, and the thorax is continuous, 7. ¢é., not exhibiting any con- 
traction in the middle; the workers or neuters are somewhat smaller 
than the males, with antenne resembling those of the females, being 
thickened to the tips; but they are destitute of ocelli: the thorax is 
more or less contracted in the middle (fig. 85.11. F. fusca 9 —12—17. 
details of this kind of individual). 
The head, including the mandibles, is more or less triangular, 
broader behind than the thorax in the neuters, but somewhat nar- 
rower in the males and females; the antenne have the basal joint 
greatly elongated, sometimes equalling half the length of the antenne, 
these organs being strongly elbowed at the extremity of this joint ; 
they are very slender, and 13-jointed, in the males (fig. 86. 12.). The 
eyes are lateral*, not reaching to the posterior margin of the head, 
and rounded; the ocelli are more distinct and larger in the males 
than in the females ; the mouth occupies a semi-oval incision on the 
front of the under side of the head (fg. 85. 12.); the labrum of the 
* Latreille has described a minute species (which I was the first to discover as an 
indigenous insect), Ponera contracta, the neuters of which are to all appearance 
entirely destitute of eyes ; Latreille having examined many specimens, both dead and 
alive, without being able to discover these organs ; only twice, with a strong lens, he 
fancied he saw a darker coloured spot in the place of the eyes. It is found under 
stones, and at the roots of plants; its little assembly net consisting of more than six 
or seven individuals, being incapable of undertaking those measures which its more 
gifted brethren perform. (Mém. Fourm. p. 43. 197.270.) Rennie mentions some 
particulars respecting this species (Insect - Miscell. p. 118.); Latreille also described 
another blind species from South America, having a large head, with two knots in 
the abdominal peduncle. My jig. 86.17. represents another species (‘Typhlopone 
fulva 9 Westwood), in which I cannot detect the slightest vestige of an eye. It 
was found dead in sugar, by C. C, Babington, M. A., &c. : another blind species was 
observed by Lund, in Brazil, which he thence named Myrmica typhlos. 
