420 MR. A. D. MICHAEL ON [June^3, 



Coloxir light yellow-brown. 



Texture polished. 



Cephalothorax almost conical, without special markings. Postrura 

 pointed ; rostral hairs fine and long. Pseudostigmata at the base 

 of the cephalothorax ; pseudo-stigmatic organs medium length, with 

 short peduncles and rough pj-riform heads. Lamellar blades on 

 edge (jradually increasing in width from the posterior to the anterior 

 ends, provided with very short cusps. Lamellae joined by a trans- 

 lamella not so ivide as the lamella'. Interlamellar hairs upright, 

 rather short. Lamellar hairs long and fine. Apodemata not joined 

 to the sternum. 



Legs of the type usual in the genus, with fine hairs. Claws tri- 

 dactyle, heterodactylo. 



Abdomen slightly pyriform, but very broad and short ; with 

 four longitudinal rows of extremely minute white hairs, and a few 

 similar hairs on the hind margin, and a short hair on each side of 

 the shoulder. Genital and anal plates rather square, with rounded 

 corners ; far apart. 



Algiers. 



Dam^tjs patelloides, n. sp. (Plate XXXVIII. fig. 3.) 



Average length about "66 millim. 



Average breadth about '42 millim. 



Average length of legs, 1st and 3rd pairs about '57 millim. 

 ,, ,, 2nd pair about •40 millim. 



,, „ 4th pair about "68 millim. 



A species remarkable for the exceptional shape of the abdomen. 



Colour very dark brown. 



Texture smooth but not polished. 



Cephalothorax nearly as wide as the abdomen ; without true 

 sculpturings ; but there is a vague ridge running transversely 

 between the two pseudostigmata, this is not straight, but advances 

 in the middle and curves backward to each pseudostigma. Uostrum 

 rather small, pyramidal, almost sharp-pointed ; there are two pairs 

 of rostral hairs, of which the hinder are the thicker. The cephalo- 

 thorax widens greatly and suddenly behind the rostrum, the first 

 pair of legs being attached at the side of the projection thus formed ; 

 then there is a slight indentation, and then a rounded lobe between 

 the first and second pairs of legs. Pseudostigmata far apart, raised, 

 cup-shaped, but with the outer side of the cup produced to a point. 

 Pseudostigmatic organs long, rod-like, but slightly tapering. Inter- 

 lamellar hairs short, rod-like, and placed quite close to the inner 

 sides of the pseudostigmata. 



Legs not long for the genus, joints strongly clavate ; peduncles 

 of the femora not long and gradually thickening. One to four 

 thick, somewhat curved hairs on each joint, mostly arranged in 

 whorls ; tarsi with one thick straight hair on the outside, and 

 numerous fine hairs. Claws monodactyle. 



Abdomen almost conical, with curved sides and a curved apex, it 

 leans somewhat back ; the dorsum has a great resemblance to the 



