TICKS. 



201 



CASE XiPHlASTOR {Mtirr. n. g.). 

 XII 



Flat, mouth provided with a long projecting rostrum and long 

 palpi applied to it ; abdomen with posterior margin beaded. 



XiPHiASTOR ROSTRATUM {Miirr, n. s.), specimen (i). 

 of ditto ; 26. Specimen (i). 



We received this species from Old 

 Calabar from Mr. C. W. Thomson, for- 

 merly one of the missionaries to that 

 coast, whose contributions were the 

 most important of any made to natural 

 science by that mission. Its habits 

 are no doubt similar to those of other 

 species. It is brown, somewhat cir- 

 cular, and with a smooth upper surface. 

 About one-fourth of an inch in length. 



-25. Enlarged sketch 



X.phiastor rostratum. 

 From 2 to 3 lines in length. 



Genus Amblyomma {Koch), 

 More or less rounded, flat, and with flat, muddy, pale eyes. 



Amblyomma rotundatum {Koch^ Arachn.). — 27. Enlarged figure of ditto 

 28. Specimen (i). 



This is a handsome species, 

 nearly flat, with the scutellum, 

 or carapace, whitish speckled 

 with small red and dark spots 

 here and there over its surface, 

 most so on the depressions on 

 each side. Slightly larger than 

 the last. 



This may be taken as the 

 type of a multitude of ticks that infest South America, where they 

 are known by the name of Carapato, being so called in conse- 

 quence of their resemblance to the Ricinus which bears that 

 name in Portuguese. 



Amblyomma rotundatum. Magnified and natural size. 



