190 Transactions of the Society. 



55. NOTHRUS SYLVESTRIS. Nic. 



Nic. 458. 

 Found by me at several places ; common. 



56. Tegeocranus velatus.* Mihi, nov. sp. (PI. VI. Fig. 9), 



Average length about * 32 mm. 



„ breadth „ ' 17 „ 



„ length of legs, first three pairs „ '12 „ 

 „ „ „ fourth pair . . „ ' 14 „ 



This, as may be seen from the measurement, is an extremely 

 small species, which presents some little difference from others of 

 the genus, but not enough I think to require the formation of a 

 new one. 



Colour a dull brown ; surface roughened with large, irregular, 

 raised dots ; these dots are upon a sort of external membrane or 

 skin, which often partly rubs off and shows a highly polished 

 yellow-brown surface below, an arrangement which I have not 

 seen in any other member of the family. I thought at first it 

 must be the nymphal skin, but it is not, the nymph is quite 

 difi'erent. 



Cephalothorax and rostrum very long, about two-fifths of the 

 entire length ; the rostrum very blunt at the point, with large 

 mandibles. The cephalothorax is narrow and almost entirely 

 bidden by the tectum-like shield, which conceals all except the 

 forepart of the rostrum, but does not hide the whole of it as is 

 frequently the case with this genus ; this shield seems to be 

 simply a tectum attached to the cephalothorax by its whole 

 surface, its lateral wings stand nearly on edge, and, beyond the 

 side of the cephalothorax, they are terminated anteriorly by large 

 curved projections reaching nearly to the tip of the rostrum, and 

 each bearing a stout curved hair at its point. The stigmata are at 

 the side, underneath the anterior part of the wing-like expansions 

 mentioned below, which are deeply notched to admit the passage 

 of the stigmatic hairs ; the latter are of medium length, and consist 

 of flat, broadly pyriform ends, much roughened with points, and 

 carried on slender peduncles. 



The legs are not half the length of the body, the coxae and 

 trochanters broad and rather flat, particularly in the fourth pair ; 

 the tarsi are clothed with fine hairs and a few are scattered on the 

 other joints. 



The abdomen and tectum present an even surface on about the 

 same level ; the former is nearly oval with the wide end foremost, 

 and there is a deep constriction laterally between it and the 



* Velatus, clothed (as with a skin or veil). 



