EELWORM GALLS 
in 
This eelwonn also attacks Wheat, giving rise to roundish, 
growths resembling purplish or dark-coloured peppercorns 
in the ear, but it rarely occurs in sufficient numbers to be a 
serious pest. Miss Ormerod remarks : “ The figures [repro¬ 
duced below] give the mass of worms in a cockle gall, and 
also the worms just escaping from the eggs, all greatly 
magnified. It is difficult to convey any exact likeness of the 
wormlet itself at this size on wood, but the figure gives the 
general shape, and the upper end shows moderately the 
spear or proboscis in the mouth-end, though not its three- 
lobed base; also the rounded muscular swelling just below 
Fig. 29—Wormlets of Tylettchus tritici escaping from Eggs. 
Fig. 30—Section of a Cockle Gall with Wormlets inside. 
After Bauer’s figures. (Much magnified.) 
Fig. 31 —Spikelet of Wheat with Galls. (Magnified.) 
Fig. 32— Tylenchus tritici. Wormlet. (Greatly magnified; natural 
length about \ inch.) 
Reproduced, by permission of Messrs. West, Newman and Co., from 
Miss Ormerod’s "Manual of Injurious Insects." 
which is one of the characteristics of this species, and the 
coarse fat granules in the intestine. The colour is yellowish- 
white, and the largest wormlets are from i to even a inch 
in length.” Dr. Bastian noted that this eelworm may re¬ 
main dormant for twenty-seven years, and again resume its 
wonted activity! 
