TICKS. 191 



CASE Ixodes fodiens {Megnin, Insect. Agric. 1867, p. 107). (T. pustularum, 

 ^"- Luc, Ann. Soc. Ent. Fr. 1866, Bull. Ivii.) 



Ixodes fodiens (female), under side. Magrnified and natural size. 

 Reduced from figTire by M. Megnin. 



This species appears to be nearly allied to the preceding. But 

 in addition to its colour, which M. Megnin says is black, the legs 

 seem to be placed at greater distances from each other. The 

 difference in the form does not go for so much, because that 

 depends in the female a good deal on the degree of distension 

 of the body. 



Its habits, or we should rather say, the results which M. Megnin 

 relates as following upon its attack, are moreover quite different 

 from anything that is recorded of any other species of Ixodes, 

 and we cannot help thinking that they must have proceeded from 

 some abnormal state of the health of the animal attacked, or 

 from some special circumstances which do not appear in his narra- 

 tion. His account is as follows : — 



"Towards the 15th of last June (1866) a mare, fifteen years 

 old, belonging to Captain Pinard, of the ist regiment of dragoons 

 in garrison at Versailles, presented all at once a disease of the 

 skin of a very unusual form, which affected the legs exclusively. 

 This disease was characterised by a pustular eruption, which 

 occupied the lower part of the limbs, without ascendmg above 

 the knees or houghs, and was accompanied by much itching, 

 tach pustule rested on a hard inflamed base, and was covered by 

 a crust of dried purulent matter, which was easily detached, taking 



