264 Mr. R. M‘Lachlan’s Descriptions of 
these species are referred to Leptonema pallida of Guérin, by Dr. 
Hagen in his “ Synopsis Synonymica.’” I have examined indi- 
viduals that appear to pertain to the one and the other respec- 
tively, and I am inclined to think that M. a/bovirens is a good and 
distinct species, but that M.agraphum is identical with L. pallida. 
M. albovirens, of which I have seen several examples, may be 
distinguished by the green colour of the veins and the perfectly 
colourless membrane of the wings; in M/. agraphum (L. pallida) 
the veins are somewhat testaceous and the membrane distinctly 
coloured in the areas mentioned by Kolenati. 
M, signata, Walker, M. inscripta, Walker, and M. pulcherrima, 
Walker, all from Sierra Leone, are possibly only varieties of one 
species ; the two last, I think, are certainly identical. 
Hydrcpsyche multifaria, Walker, has already been justly trans- 
ferred to Macronema by Dr. Hagen. 
H. vicaria, Walker, is also placed in Macronema and perhaps 
justly, but the dense hairy clothing of the wings renders an exa- 
mination of the neuration difficult without injuring the type. 
Hydropsyche transversa, Walker, is certainly a Macronema, but 
of a peculiar facies. 
Leptocerus niveistigma, Walker, L. abjurans, Walker, and L, 
quadrifurca, Walker (Trans. Ent. Soc. 2nd ser. vol. 5, pp. 176, 
177), must form a section of Macronema. See the observations at 
the end of this paper. 
Genus STENopsycuE, nov. gen. 
Antenne graciles, alis longiores, intus inconspicue serrate. 
Caput subquadratum, “postice dilatatum, pilosum. Ocelli 
magni. Palpi maxillares articulis duobus basalibus brevibus, 
8° longissimo ; 4° vix 29° longiori; 5° preecedentibus in unum 
zequali. Ala anticee elongate, anguste, lanceolate, ad 
apicem acute, sparse pilose ; cellula discoidali parva, occlusa; 
furcis apicalibus 14, 24, 3@, 44 et 5* instructee; postice valde 
breviores, opace, furcis apicalibus 5* et 54 instructee. Pedes 
modice longi. Calcaria 3-4-4. (¢.) 
Antenne longer than the wings, fine, indistinctly serrated within, 
the basal joint short. Head subquadrate, widened posteriorly, 
hairy. Eyes very large, subglobose. Ocelli large and distinct, 
oval. Maxillary palpi slightly hairy ; the first and second joints 
short; the third very long; the fourth rather longer than the 
second ; the fifth about the length of the others united. Labial 
