ANATOMY OF THE WESTERN CRICKET. 
175 
Along 1 
ular membranous farrow, can thus be brought together so as to seize 
the body of the female during sexual union. 
The plate corresponding to the oviducal plate of the female is narrow 
behind and notched at the end, with the edges folded up ; the ends of 
the lobes thus formed bear 3 
each a movable, cylindrical, « 
short appendage. The in- ^ 
tromittent organ is at base g 
soft and membranous con- s. 
sisting of two irregular p airs £ 
of lobes, to the upper l ? I 
which the fork-shaped penis ° 
is attached, consisting of a g 
pair of slender boot-shaped | 
spines, which are capable of Z. 
separating and thus retain- § 
ing their hold in the copula- 1 
tory sac of the female by the s 
toe of each "boot" pointing g 
outwards and sticking into 
the walls of the sac 
— a 
the exterior, corresponding % 
to the leg of each "boot," » 
are two or three spines. £ 
Internal anatomy. — The |- 
following description is » 
based on the structure of "» 
Anabrus ptirpurascem, gath- g" 
ered in Colorado in the sum- ^ 
mer of 1878, and preserved | 
carefully in strong alcohol. §• 
From these specimens the s 
elaborate drawing by Mr. E. \ 
Burgess was made, to which g- 
the reader is referred (Fig. 5). £ 
Digestive system. — The fj" 
mouth-opening is rather ^ 
large, and the throat (ceso- g* 
phagus) begins on the roof of * 
the mouth ; it curves upward \ 
and a little backward as far g 
as the center of the head, I 
where it slightly contracts % 
before the canal dilates into P- 
the large spacious crop (ingluvies), which is filled with partly digested veg- 
etable food. In A. simplex' it? extends halt way through the abdomen, 
