368 THE ANIMAL PARASITES OF MAN 



Hcemaphysalis punctata, Canestrini and Fanzago, 1877-8. 



[Syn. : Hcemaphysalis sulcata, Canastrini and Fanzago, 1877-78 ; Rhico- 

 cephalus expositicius, Koch, 1877 ; Hcemaphysalis peregrinus, Cambridge, 1889 ; 

 Herpetobia sulcata } Canestrini, 1890. 



This species does not appear to be common. It occurs on sheep, 

 goats, horses and cattle. I have seen a female taken from man in 

 Britain. The female when fasting is 3-44 mm. long, when gorged 

 12 mm. long. Colour, reddish-brown, leaden-grey when gorged ; 

 dorsal shield deeply indented in front ; rostrum, shield and legs 

 brownish ; body finely punctate, both above and below ; sexual 

 opening opposite the coxae of the second pair of legs in both sexes. 

 Palpi a little longer than the labium ; first segment short and 

 narrow, second and third widened on the dorsal face. Coxae with a 

 short, broad blunt spine ; tarsi short, terminated with a spur on 

 the first pair. The male is 3*10 mm. long. Body rather narrow, 

 yellowish to reddish-brown ; dorsal shield nearly covers the whole 

 body ; numerous punctures over the whole surface. Eleven indenta- 

 tions on the posterior margin of the body ; peritremes lighter in 

 colour, large and comma-shaped. The three anterior pairs of legs 

 with a short spine on the haunches, the fourth with a very long one 

 directed backwards. The nymph varies from 2*5 3*0 mm., is oval, 

 and light yellow to dark red in colour. Dorsal shield rounded with 

 few punctations. No spur on tarsi, and sexual orifice nearly obsolete, 

 Larva short and oval. Length 1*20 mm. F. V. T.] 



Dermacentor reticulatus (Fabricius), 1794. 



Syn.: Acarus reticulatus, Fabr., 1794; Ixodes reticulatus, Latreille, 1806; 

 Ix. marmoratus, Risso, 1826. 



This tick is provided with eyes, but it is distinguished from Ixodes 

 and analogous genera by the lack of the abdominal plastron in 

 the male, which measures 5 6 mm in length by 3-5 mm. in breadth. 

 The female may attain 16 mm. in length and 10 mm. in breadth. 

 It is found in the South of Europe, in Asia, and in America ; it 

 attacks chiefly oxen, sheep and goats, and occasionally man. 1 

 [This tick sometimes causes much annoyance to human beings. 

 It has been most troublesome at Revelstoke. Specimens have 

 recently been found on fowls in Kent. F. V. T.] 



'Neumann, G., "Rev. de la fam. des Ixodides" (Mem, soc. zooL, France, 1897, 

 *., P- 360). 



