82 



REV. J. E. HULL ON 



158. Pergamasus hamatus, Koch. 67. 



Under deeply embedded stones, West Allendale; 

 males and females in March. The long narrow 

 body of the male makes it very conspicuous. It 

 is extremely probable that the ? described by 

 Berlese is not the ? which I find with ha??iahis $. 

 The habitat is peculiar, the only other Gamasid 

 found there normally is Rhodacariis pallidus. 



159. Pergamasus septentrionalis, Oud. 66, 67, 68. 



Usually in moss of woods. 



Cheshire. Ireland {var, norvegicus, Berl.) 



GAM AS US, Latr. 



Type : cohoptratorum, L. 



§i. Gamasus, proper. Labial cornicles on a tubercular 

 base. Tarsi not spined. 



Species : coleoptratorum, kemperst, lunarls, consanguineus, 

 fimetorurn, hortivagus, anglicus, boftibianus, stygius. 



§ii. Eugamasus. Labial cornicles sessile. Tarsi with at 

 least one spine. 



Species : immanis, kraepelini, jjiagnus, cornutus, trouessarti, 

 oudemansi, nidicolens, fiicarius. 



1. Epistome with many teeth (laterally at least) ... 2 



,, undivided, or 3 lobed, or with 2 or 3 or 5 

 teeth 5 



2. Epistome with a long central spine ... ... ... 3 



Central spine similar or sub-similar to the rest ... 4 



3. Femur i ((^) with bifurcate axillar tubercle ... anglicus. 



,, with undivided axillar tubercle ... lunaris. 



4. Length exceeding 2 mm. ... ... ... ... iinfnanis. 



,, under 2 mm. ... ... ... ... ... irojiessarti. 



5. Body piriform, dorsal set£e thickened ... ... 6 



Body elliptic or more or less parallel-sided ... ... 7 



6. Dorsal setse uniformly rod-like ... ... ... cornutus. 



,, short, deflexed, distally lanceolate ... nidicolens. 



7. Setse of posterior scutum equal and similar ... ... 8 



,, ,, dissimilar (obviously) ... n 



