242 Transactions of the Society. 



that genus, that it appears to me that it cannot properly be included 

 therein. 



Generic Characters. 



Palpi with first joint small, second and third swollen, the 

 second being considerably the longest ; fourth and fifth joints much 

 slighter, but fifth as long as second, and dentated on the outer 

 edge. Labium broader than long, nearly straight on the anterior 

 edge, and not covering above half the buccal opening. Mandibles 

 rather long with the fixed claw not toothed. Maxillse bilobed, lobes 

 unequal. Gephalothorax large and conical, having a tectum attached 

 only by its base, less wide than the cephalothorax, and covering part 

 only of its length. Cephalothorax deeply indented for the recep- 

 tion of the coxae of the first pair of legs, which are almost entirely 

 hidden, those of the second pair being supported by strong projec- 

 tions. Legs thick and shorter than the body ; all the trochanters and 

 the coxse of the last two pairs broad and flattened ; fourth joints of 

 the first pair of legs with a projection overhanging the fifth like Ere- 

 mseus. Tarsi with three heterodactyle claws, the centre one being 

 conspicuously the thickest. Abdomen longer than broad, flattened 

 on the dorsal surface, the dorsal plate of which projects anteriorly 

 over the cephalothorax, and may be fastened to the upper surface 

 of the tectum, and also projects at the anterior angles (or shoulders) 

 sheltering the stigmata, which are wide apart, set far back, and 

 point outwards. 



This genus will fall in Nicolet's first division, being tridactyle ; 

 in the first subdivision, being furnished with a tectum, and it would 

 appear to come properly at the end of that division immediately 

 before Eremseus, which latter genus it resembles in the form of the 

 tarsi and claws, the mode of insertion of the legs, and many other 

 particulars, while it is divided from it by the tectum, the form of 

 the palpi and labium, the thickness of the legs, &c. 



21. ScuTO VERTEX scuLPTus. Mihi (Plate XI. Fig. 4). 



Average length about • 60 mm. 

 „ breadth „ '33 „ 

 NeiD Species. 

 Colour varying from dark red brown to black. 

 Cephalothorax large at the base and bluntly conical, but mostly 

 hidden under the advancing dorsal plate of the abdomen. Tectum 

 almost square, but a little longer than wide ; wings of tectum 

 raised almost, perpendicularly, broadest anteriorly, and ending in 

 long, blunt, curved points, with curved terminal hairs. A little way 

 in front of the tectum is a round plate covering the point of the 

 rostrum, and raised in the centre and at the edge. From below 

 this a ridge runs along the side of the cephalothorax, ending in a 



