62 REV. J E. HULL ON 



2, Sternal spines equal... ... ... .,, ... kilaris. 



Sternal spines unequal... ... ... ... ... 3 



3. Anterior sternal spines shortest ... ... ... agilis. 



,, ,, longest ... ... ... pachyptis, 



70. Laelaps pachypus, K, 



On Arvicola ainphibius, Micro fus ore a den sis. 

 Middlesex; Orkneys (Hirst). 



71. Laelaps agilis, K. 67. 



Usual host Arvicola ampJiibivs. Ninebanks, on Afus 

 silvaticus. 



Middlesex and Berwickshire (Hirst). Lincolnshire 

 (Dr. George). Ireland (on a field mouse, Halbert). 

 Scotland (Evans). 



72. Laelaps festivus, K. 67. 



Laelaps semitectus, L. Koch, 1879. 



Ninebanks, on Afus silvaticus and Evotomys glareolus ; 

 also in a nest of Sorex. 



Scotland (Ayrshire, Bute, Aberdeen, Lewis, Shet- 

 lands — Hirst). 



73. Laelaps hilaris, K. 



On field voles, &c. 



Scotland (Orkneys, Cumbrae, Islay, Kincardine — 

 Hirst). 



74. Laelaps echidninus, Berl. 67. 



Ninebanks, on Miis silvaticus. 



Lancashire (Silverdale, from a mole's nest — R. S. B.) 



" Only on Epiinys norvegicus" — Hirst. 



75. Laelaps stabularis, K. 66, 67. 



A regular inhabitant of barns, stables, &c., as well as 

 a regular inmate of the nests of rodents. I have 

 found the nymph " travelling " on the common 

 hay moth, Caradrina cvbicularis. 



