58 
Proceedings of the Royal Society of Edinburgh. [Sess. 
Lithobius jugorum, Attems, 1904 ; subspecies tigriaccola, ii. subsp. 
Adult $ : length, 17‘50 mm.; breadth of 9th tergite, 2*30 mm. 
Immat. $ : length, 14* mm. ; breadth of 9th tergite, 2‘ mm. 
Colour greyish. Body feebl}^ tapering forwards, more conspicuously 
from the 9th seo-ment backwards. 
Angles of 9th, 11th, and 13th tergites not produced. Antennae 19 to 20 
jointed. Coxal teeth of maxillipedes 3 + 3, the outer pair being smaller and 
more slender than the others. Ocelli few, 4 to 6 ; very irregular, some 
being fused in a large dark patch and more or less distinct. Coxal 
pores 4, 3, 3, 3, small, circular. 
Tarsi 1—5 two-jointed. Spinal armature of legs of adult male as 
shown below : — 
1st pair 
2nd to 7th pair 
8th and 9th pairs. 
10th to 12 th pair 
13th pair 
14th pair 
15th pair 
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above 
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15th pair without coxolateral spine and with a single claw. 
Fourth joint of 14th and 15th pair of male with a dorsal sulcus. 
Almost all the particulars agree with Attems’ description of L. jiigorum 
from Przewalsk : even the peculiar structure of the eyes is similar. Yet 
the Amara form is smaller and the spine armature is different (said to be 
1, 3, 3, 1 below in the type). The latter detail is in accordance with the 
presence in tigririccola of the sulci of the hind legs, which, considering the 
