AND OTHER INDIGENOUS ANTS. 219 
brown. Legs tawny, thighs and tibiæ pitchy, except at the extremities: length: 14, 
expanse 33 lines. 
Female (fig. 22) black: head suborbicular-quadrate irregularly striated, clypeus biden- 
tate (fig. 23); eyes and ocelli minute, mouth ferruginous : mandibles large and prominent, 
with many minute teeth; neck distinct, ferruginous : antennæ remote, not long, stoutish, 
geniculated, 12-jointed and clavate, scape long, second joint cup-shaped, seven following 
transverse, the third being very short, the ninth much longer, the remainder forming a 
club, the apical joint being long and conical (fig. 24). Thorax not so large as the head, 
obovate, hollowed and striated before; the scutel, which is smooth, has the suture at the 
.base ferruginous ; postscutel very short, punctate, with two short but distinct spines (figs. 
25 and 265). Petiole ferruginous, elongated, hairy, basal nodule subquadrate or ovate, 
second broader, transverse, and partially striated (figs. 25 and 267): abdomen very smooth 
and shining, rather broad, slightly depressed and oval, the apex ferruginous. Wings fus- 
cous, exactly like the male. Legs ferruginous, stoutish, especially the anterior, which are 
rather short: length 12, expanse nearly 4 lines. | 
Neuter undiscovered. 
_ This species, which I dedicated to my esteemed friend Mons. P. A. Latreille, is quite 
distinct from any other type of the Formicide that has fallen under my observation. It is 
now twenty-five years at least since I discovered the males near that romantic spot, Black 
Gang Chine in the Isle of Wight, but I have since found others near Greenwich, towards 
the end of August; and at Sandgate in Kent, in October. It was not till August 1836 
that I had the satisfaction of taking, what I consider to be, the female of this insect, at 
Lulworth Cove. It is remarkable that Mr. F. Smith should have caught a female also in 
Camden Town, on the wing, and as he has also found the male at Colney Hatch, it seems 
to be generally distributed in the southern counties. It appears to affect swampy locali- 
ties, for all the males I have taken were flying about and settling upon rushes, and my 
female was captured close to a spot where rushes and reeds were growing. 
As it is inconvenient to retain useless names, it is advisable to state that Myrmica 
binodis must be expunged from our British lists, and of the eleven Formice recorded in 
my Guide*, there are only eight which are ascertained to inhabit Great Britain. No. 2; 
F. pubescens, Latr. and No. 8. F. emarginata, Oliv. were admitted on doubtful authority, 
and No. 11. F. cognata, Steph., is not to be found in the British Museum, where Mr. Ste- 
phens’s collections are deposited. 
* Curtis’s Guide to an Arrangement of British Insects, 2nd Edition; Genus 661. 
262 
