-172 BRITISH ORIBATIDiE. 



pyriform. There is a chitinous projection from the 

 tibia of each leg of the first pair which carries the 

 tactile hair. The central unguis is the thickest, but 

 shortest and most sharply curved. The whole texture 

 of the legs, but specially of the coxae and femora, is 

 rough and granular. There are a few short, curved, 

 fine hairs on each of the three central joints of each 

 leg, mostly arranged in one or two whorls ; and there 

 are a few very short stumpy hairs or spines on the 

 femora, and some shortish fine hairs on each tarsus. 



Abdomen oval, slightly truncated anteriorly, and 

 produced to a small point posteriorly ; its margin is 

 sharply raised all round, the raised border being broad 

 and sloping up from within outward (the outer edge 

 being the higher) ; it is more raised anteriorly than 

 posteriorly. Within this border the back is slightly 

 arched, but the highest part of the central portion is 

 not higher than the outer edge of the border. The 

 raised border has a small blunt point just behind each 

 pseudo-stigma. The whole notogaster, including the 

 raised border, is coarsely reticulated by irregular raised 

 ridges which leave large, shallow, depressed spaces 

 between them. Each of these spaces is divided by 

 smaller similar ridges into lesser divisions, which are 

 not so easy to see as the principal reticulations. The 

 chitin of the notogaster itself is slightly granular. 

 The whole of the markings are extremely irregular 

 and vary greatly in different specimens, indeed pro- 

 bably two examples really similar are not ever found ; 

 but the character of the markings is constant. There 

 is sometimes a slight median depression of the noto- 

 gaster, particularly near the progaster. There are 

 two longitudinal rows of very short, thick, stumpy 

 hairs on the notogaster ; they hardly look like hairs, and 

 are very caducent ; there is a row of similar hairs a 

 little within the lateral and hind margins. These hairs 

 are not shown in the drawing, indeed they are almost 

 too small, but a few of them are indicated round the 

 hind margin of fig. 3 ; those in this situation show most 



