86 TERRESTRIAL ACARI OF THE TYNE PROVINCE 



Nymph similar in form to the $; but with posterior 

 scutum shorter and straight in front, not con- 

 tiguous to the anterior ; dorsal setae longer, 

 especially the humeral pair ; scuta red brown. 

 Epistome (like that of the $) of three acute lobes, 

 the median much the largest. This nymph is in 

 all probability the Poecilochirus carabioi Canestrini. 

 It travels in a fasting state on Necrophorus, spp., 

 but feeds rapidly on reaching carrion, becoming 

 considerably distended. Adults appear within 

 twenty-four hours of the arrival of beetles carrying 

 the nymphs. 



Ninebanks, on dead birds and mammals exposed as 

 traps. 



178. Gamasus fucarius, sp. n. 67. 



Of the same size and general appearance as 

 G. nidicolens, but the dorsal setas are simply 

 spinous and not flattened. The two occur together 

 with various species of Bonibus, and in spring the 

 female bees almost invariably carry a considerable 

 number of nymphs. All bee-borne nymphs are 

 doubtless included under the fiiconim of De Geer 

 and most subsequent authors, but the form named 

 bombortiiii by Oudemans probably belongs to 

 nidicolens, and his snbterranens {ex MuUer) to 

 bonibianus, while the remaining form (with tri- 

 angular posterior scutum) may be assigned to the 

 present species ; but I have no definite proof of 

 these collations. 



Fucarius $ is much smaller than the female. The 

 femoral stridulatory spur is very stout, and con- 

 stricted at the base without accessory tubercle, 

 unless that is represented by a branch on the 

 distal side. Tarsus ii has two strong inferior 

 spines, one bssal, the other about midway (see 

 fig- 37)- 



