56 REV. J. E. HULL ON 



46. Seiodes histricinus, Berl. 67. 



The undivided dorsal scutum is oblong, leaving a 

 pretty wide nude margin (an exception in this 

 group). 



Ninebanks, in manure. 



47. Seiodes punctatus, sp. nov. 67. 



Body oblong oval, yellow brown. Dorsal scutum 

 concave in the middle, but with a median ridge 

 (narrow in front, expanded behind). The margin 

 is flat, of uniform width, and bears on each side a 

 series of fine setae. The outer edge bears a 

 series of similar setffi. The hollow part is con- 

 spicuously punctate, but the ridge and margin are 

 smooth and shining with a very few faint punctures. 

 Ventral plates strongly punctate. 



West Allendale, in moss on the fells. 



TRACHYTES, Mich., 1894. 

 Type : piriformis, Koch. 



48. Trachytes piriformis, K. 66, 67. 



Gibside, Chopwell; Allendale. In moss. 

 General, but records are lacking. 



RHODACARUS, Oudemans, 1902. 



Made the type of a new sub-family by Oudemans, 

 mainly because it was supposed to have a " true 

 cephalothorax and abdomen." On the strength 

 of this he says the genitalia are placed exactly 

 as in spiders — which might be said of the female 

 but certainly not of the male. As a matter of fact, 

 the division seems to be merely the usual division of 

 the shield, which is just like that o'i Dcndrolaelaps, 

 placed by Halbert among the Gaviasince. 



Type : roseus, Oud. 



49. Rliodacarus roseus, Oud. $ 385 fi. 66, 67. 



.Silksworth, Gibside, Chopwell; West Allendale. In 

 moss usually. Rosy pink. 



