144 { November, 1871. 
1, Appendices inferiores maris valde elongate, lanceolate, acute, 
paullo curvate, gradatim paullo divergentes, ad basin approximate ; 
margins interioris dimidio apicali obliquo. . ...P. conspersa, Curtis. 
2. Appendices inferiores maris ad basin late, valde approximate, 
eatus in processum elongatum, sub-cylindricum, in medio geniculatum, ad | 
apicem paullo dilatatum, producte. ...............P. geniculata, sp. 2. 
3. Appendices inferiores maris breves, sub-ovales, obtuse, vie diver- 
gentes, ad basin approwimateé. .............0.-+....P. brevis, sp. 0. 
PLECTROCNEMIA CONSPERSA, Curtis, Hag., M’ Lach. (senea, Pict.). 
¢@. From the middle of the margin of the last dorsal segment proceeds a longly 
triangular pointed process; under this, and projecting | 
y beyond it, is a still longer upper penis-cover, appearing 
as a continuation of the process. Append. super. short, | 
broad, sub-quadrate, or semi-ovate; externally, at the 
ais base, is a rounded tubercle. App. intermed. placed | 
os F more internally, longer than the app. sup., narrow at. 
the base, but spoon-shaped at the apex. App. infer. inserted nearly close 
together in the middle of the margin of the last ventral segment, afterwards 
gradually diverging, very long, gradually curved upwards, lanceolate and | 
acuminate, the tips acute, concave internally. 
?. The abdomen ends in a blunt tube, notched at the apex; at the ventral base 
of this tube are two short, divergent lobes, which do not extend to the apex of 
the tube. 
In fresh specimens (especially of the 9) the sides of the thorax are 
strongly clothed with black hairs, and on the anterior wings are decided, 
more or less oblique, fuscous markings. 
Probably generally distributed throughout Europe; the common 
species in Britain. <A detailed account of the structure of the g sexual 
apparatus is given by Hagen, in Stett. Ent. Zeit., 1860, p. 285. In dry 
examples I cannot define the more internal organs of this apparatus. 
Curtis’s types are in Australia, hence a re-examination cannot be 
made of them. Pictet’s type (senexv) in the British Museum is reduced 
toa fragment. Stephens’ types (senex) are two males and one female: 
the former both pertain to the second of my species (geniculata), the 
latter is what I consider the female of conspersa. There thus remain 
the questions whether Curtis’s and Pictet’s species be really identical, 
and also whether one or both of them represent my conspersa. This 
latter is certainly the most common and widely distributed species ; 
and taking this into consideration with the fact that I possess all three 
from Switzerland, I think I am warranted in assuming that the species 
noticed by Curtis and Pictet are identical, and that my conspersa was 
intended by them. 
