Neuroptera collected in Algeria by the Rev. A. LE. Eaton. 163 
nervules near the base, and an oblique dislocated series of 5 gradate 
nervules on the disk, all deep black and margined with blackish ; 
sector radii with four branches, upper branch of lower cubitus 
with three simple branches, the lower with two, Posterior wings 
hyaline, iridescent, narrower, shorter, and less obtuse at the apex, 
not excised ; neuration for the most part whitish, but the small 
apical forks, and the base of the larger furcations are mostly black ; 
the single dark black transversal between the radius and sector is 
margined with blackish, the only other transversals are two 
cubitals in a line towards the middle of the inner margin and another 
nearer the base; sector radii four-branched, arising much nearer 
the base than in the anterior ; along the lower branch of the upper 
cubitus and the upper branch of the lower cubitus, towards the 
base, are a few long microscopic blackish scales. 
Length of body 4°5 mm., expanse 13 mm. 
Hab, Biskra, 24th April, 1895, one g at light. 
This interesting little insect is by far the smallest of the 
known species of the genus, and otherwise remarkable for 
the entire and rounded apex of the anterior wings. 
I would call attention to some remarks by me on the 
presence of scales on the wings of this genus (of which 
Lsoscelipteron, Costa, is scarcely more than a synonym) in 
the Entom. Monthly Mag., xxii, p. 215 (Feb. 1886) ; 
the scales are represented on the posterior wings of 
B. eatont. 
Neurorthus fallax, Rbr. (Mucropalpus fallax, Rbr., Newr- 
orthus widipennis, Costa, Sartena amana, Hag.). 
Hab. Frais Vailon, near Algiers, 27th October, 1892 ; 
Bouzaréa and El Biar, near Algiers, 3rd and 24th April, 
1893 ; Bone, 28th May, 1896; one ¢ from each locality, all 
indicated as taken near a stream. 
Although the type is not in existence I do not hesitate 
to apply Rambur’s name according to the description and 
the locality (the island of Sardinia). I think only one 
species is known, but there is some amount of mystery to 
be cleared up. In the three specimens from near Algiers 
the abdomen is notably constricted before the apex, and in 
the ventro-lateral aspect of this constriction there is placed 
on each side a short filamentous appendage with a vague 
appearance of articulations; in the example from Béne 
the constriction is present without the filaments: in a 
type of Sartena amana from Corsica, the constriction is 
