150 INTERNAL ANATOMY OF INSECTS, 
the Carabi and the mealworm-beetle*; thirty in the 
large green grasshopper (Acrida viridissima®); thirty- 
two in the cheese-maggot-fly* ; and in the hive-bee 
more than a hundred and fifty". 
The number ‘of eggs also contained in the ovaries 
varies. In Echinomyia grossa there is only one egg in 
each, and only ¢wo at once in the matrix®: in another 
fly produced by the cheese-maggot there are four* ; 
in the louse there are jive; in the cockchafer six; in 
the hive-bee sixteen or seventeen are visible at the same 
time"; and in the silk-work moth sixty or seventy’. Be- 
sides the eggs, the tubes contain a pellucid mucus, and at 
their upper extremity the eggs are lost in a oranular 
mucous mass, in which, however, they may still be dis- 
covered with a microscope *. With regard to the ter- 
mination of the ovaries or egg-tubes internally,—in those 
that have agglomerated ones it is not to be traced, the 
whole appearing like an oblong obtuse or acute body’: 
but in the branching ones it is more easily traced ; at first 
they converge in most cases to a point; this is seen to 
advantage in the caterpillar of some butterflies, when 
near assuming the pupa, in which they are readily dis- 
covered, and represent with great truth and elegance the 
bud of some blossom™; but in time they diverge, and 
sometimes become convoluted"; they generally termi- 
nate in a slender simple filament, but in the louse in a 
fork® ; they are sometimes extremely long, as in the 
4 Gaede Anat. der Ins. 25, 28. t. ii. f. 10. > Ibid. 32. 
* Swamm. ii. 74. a Ibid. 203. t. xix. f. 3. 
© Reaum. iv. 891—. =f Swamm. é. xliii. fi. 19. ® Gaede 22. 
h Swamm. Bibl. Nat. i. 203. — + Ibid. * Rifferschw. l1—. 
' Swamm. ¢. xl. f. 8. Gaede. ¢. i. f. 3. ec. 
™ Herold. Schmett. t. v. f. 10, 12. n PHATE OX kb res 12. 
© Prare XXIL 228: 
