518 BRITISH OfilBATIDiB. 



Colour yellow brown ; usually of medium depth. 

 The animal is often partly concealed, and the hairs, 

 &c., are matted up by dirt, but it is not as dirty as N. 

 horridus, &c. 



Texture dull, the whole surface thickly covered with 

 raised dots. 



Cephalothorax flat, short, broadly conical; deeply 

 indented for the insertion of the first pair of legs ; the 

 margins of this indentation are sharply raised, and 

 project beyond the general outline of the body. 

 Rostrum very short, slightly truncated ; rostral hairs 

 straight and diverging. Behind the rostrum is a strong 

 convex ridge, higher in level than the rostrum, and on 

 or immediately behind this are two very large apo- 

 physes, which project considerably beyond the tip of 

 the rostrum ; these apophyses are nearly straight, and 

 diminish gradually but slightly towards the tip, but 

 at the proximal ends they are prolonged transversely 

 from the inner side; and there is a thin, narrow 

 blade along the outer edge. From the end of each of 

 these apophyses springs a large, curved, or rather 

 hooked, thick spine, which, when clean enough, is seen 

 to be fringed with long, flexible, villous processes on 

 its outer edge. The spines from the two sides cross, 

 and they are often matted up by dirt into one mass, 

 with the interlamellar hairs ; indeed, a great part of 

 the above detail can only be seen when the creature 

 has been artificially cleaned, either with sodium hydrate 

 or in some other manner. There are two small ridges 

 like rudimentary lamellse. Pseudo-stigmata very pro- 

 jecting, and far apart. Pseudo-stigmatic organs very 

 short, with thin peduncles, and small, shortly jDyriform 

 heads. Interlamellar hairs very long, and set on both 

 sides with villous processes like those above described; 

 they spring from apophyses. 



Legs of moderate length, the fourth pair does not 

 reach the hind margin. They are broad and flat and 

 diminish gradually in thickness, the genuals and tibise 

 are of about equal length, and the femora and tarsi of 



