Ixodes. 137 



(hypostome) has teeth encreasing in size from before backward, 

 lyegs larger and stronger than in female. 



Distribution. Europe, N. Africa, America, common, well 

 known. 



Attacks sheep, cattle, goats, horses, deer, hare, rabbits, dogs, 

 cats, fox, ferret, hedgehog, bats, birds, man, etc. This is a great 

 pest of the dog, and is credited with transferring from sheep to 

 sheep the microbe of I,ouping-ill. There can be little doubt 

 that it stands ready to convey to fresh victims the germ of any 

 disease of the blood or even of the skin, from and to any of the 

 large class of animals on which it preys. 



Ixodes Hexagonus. Dog Tick, {Europe). I Reduvius. 

 Female. Size and shape of Ixodes Ricinus ; Dorsal shield more 

 lozenge-shaped with lateral angles sharper, posterior angle nar- 

 rower, punctations larger, genital pore between first intercoxal 

 spaces. Anus just behind the limit of posterior third of the 

 body. Grooves united in arch in front and divergent to pos- 

 terior border of the body. Dart (hypostome) with three rows 

 of teeth on each side, the median the largest but only three or 

 four in number and anteriorly. Palpi shorter than the mandibles, 

 the third article almost as long as the second. Legs relatively 

 shorter and thicker than ricinus, coxse I with short retrograde 

 tooth, tarsi large, thick, short, bulging toward the extremity, 

 with a convex ridge. 



Male. Body elliptical, nearly as broad anteriorly as posteriorly, 

 brownish red, with lighter colored legs. Dorsal shield covers 

 whole dorsum except a thin marginal zone of a lighter color, 

 with numerous hair-bearing puncta. Genital pore between level 

 of legs II and III. Pregenital shield broader than long, narrower 

 behind than in front. Anal shield ogival in front, divergent 

 behind. Almost twice as long as broad. Epimeral plates 

 strengthened laterally by chitinous plates and marked toward 

 inner side by pits bearing hairs. Whole venter bears fine hairs. 

 Anus as in female. Mandibles and dart bear teeth like those of 

 ricinus. Legs relatively longer and stronger than in female, 

 coxse approach each other in the same pair ; retrograde spine of 

 legs I a little less strong than in ricinus. 



Distribution. Europe and United States. 



Attacks dogs, cattle, sheep, hares, rabbits, gophers, squirrels, 



