w 
379 
such as appertains to all sensory 
I have nothing to add. 
To what I have already advanced 
At the time of writing his article above mentioned, Leydig had not seen my second 
paper on the antennal org 
bleaching process I have recommended for their 
Nor had he been successful, as lie owns, in applying the 
consequently 
he, nor indeed any writer (Lespes for instance, nor his critic in this subject, Claparede) 
yet noticed properly the structures I have pointed out in 
the 
Under 
cumstances we must consider their opinion as to the seat of the auditory function 
liable to 
Fig. 
EXPLANATION OF THE FIGURES. 
Fig. I. Termination of nerve of haltere in Rhingia rostrata, showing a row of ganglionic cells, with 
nuclei a a, and their terminations b, b. 
Two ganglionic cells in situ in halteres of Erustalis tenaxi aa y ganglionic enlargement; b, terminal 
expansion with nucleus, c, passing to the interior of the vesicles, d. 
Row of ganglionic cells, a a, in Eristalis tenax; b, their termination beneath the vesicles. 
Fig. 4. Ganglionic cells in a Beetle (one of the Lamari<B)> the outer nerve-sheath attached to the skin- 
canal ; a a, nuclei, two or three in each : a small tube passes through the skin-canal to the 
closing-in membrane, 
tig. 5. Shows one of the ganglionic cells with three nuclei, a a ; the nerve-sheath, b b, has been attached 
Fig. 3 
Fig. 6 
to the inner surface of the skin-canal. 
form, where the gan 
Fig. 7- Organs viewed in situ from above on the nervure of Strangalia elongata : a a, ganglionic swellings 
with nuclei ; 6, closing-in membrane and skin-canal. 
i 
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