FAUNA AND FLORA OF NORFOLK. 
813 
JASSARIA. 
Deltocephalus thenii, Edw. Wretham Heath, 24th 
August, 1905 (Edwards). The distinctive 
characters of this species were pointed out by 
Prof. Then in 1889, but he neglected to give it 
a name. At first sight it is apt to be mistaken 
for D. striatus, but the aedeagus is very charac- 
teristic ; the free portion of the latter consists of 
two chitinous branches resembling the frame of 
a lyre and connected by a transparent membrane. 
The aedeagus of D. striatus resembles a spoon 
of which the handle is about equal in length to 
the bowl. 
,, SUBSTRIATUS, Then. Roydon Fen, near Diss, 
21st Sept., 1908 (Edwards). This species might 
be passed over as D. striatus, but its aedeagus 
is trumpet-shaped. 
DELPHACINA. 
Stenocranus LONGIPENNIS, Curt. Of this fine species I 
got several of both sexes at Hoveton on the 
2nd Sept., 1911, and a few days later I caught 
one male at East Ruston Common. 
LIVIARIA. 
Livia CREFELDENSIS, Mink. This species was introduced by 
me as British in 1908 on the strength of a pair 
from Tuddenham, Suffolk, which 1 determined 
for Mr. C- Morley. On the 6th Sept., 1913, I 
found it commonly on rushes at Horsford ; the 
rushes had been recently mown, and by shaking 
them over a cloth I got as many specimens as I 
wished. L. crefeldensis did not, however, com- 
pletely displace the common L. juncorum, as I 
saw about half a dozen examples of the latter, 
including both sexes. 
