58 Rev. F. D. Morice on male terminal segments and 



26. Montanus, Morawitz. PI. VIII, 26, 26«. PI. IX, 42. 



This species has recently been found in Scotland. I have 

 several times met with it in the Alps, and I suspect it is 

 that recently described from Scandinavia by Aurivillius as 

 suecica. 



The armature is of the same type as marginatus and 

 mongolicus. The dentiform secondary dilatation of the 

 sagittal near their bases is for some reason less conspicuous 

 — I fancy the volsella obscures it somehow — but it 

 certainly exists, though my figure hardly shows it. The 

 outline of the stipites, in their central part, is particularly 

 bulging. 



The outline of the seventh segment distinguishes it at once 

 from any species yet mentioned. We see, as it were, a 

 pair of rather stout but elongate columns with dilated 

 " capitals " and a sharp lateral projection — sharper than 

 that in marginatus — on each side near their bases. (The 

 lobes in spectdbilis and namis are also elongate, but 

 otherwise very different, their form being rather oval than 

 column-like.) 



27. Ventralis, Perez. PI. VIII, 27, 27o. PI. IX, 51. 



I have examined two specimens, both from Mongolia. 

 One was sent to me by the author ; the other I received 

 from Herr Kohl. 



By its dissection-characters it should be nearly allied 

 to montanus, but it is much smaller, and the external 

 characters differ considerably. 



The armature hardly differs from those of the three 

 last specimens. The seventh ventral plate is much in the 

 style of montanus, but the " columns " here are decidedly 

 more slender. 



(I feel sure that mongolicus, montanus, and ventral is, and 

 probably also marginatus, belong to a real group ; and next 

 to them I should place the American species figured in PI. 

 IX, 57, 58.) In this group (assuming it to be one), as in 

 that of balteattis, we find great differences in the length of 

 the gena, making it probable (as suggested before) that 

 this character throws little light on the affinities of species, 

 though useful in distinguishing them individually). 



28. Gvcvfci, Alfken. PI. VIII, 28, 28^. PI. IX, 45. 



I am enabled to figure this species through the extreme 



