568 BRITISH ORIBATID^. 



Texture dull. 



Cephalothorax rather sliort and broad (the figure is 

 as usual, somewhat foreshortened, the rostrum being 

 held downward). Rostrum blunt, slightly trifid ; 

 rostral hairs very fine. Lamellae straight ridges, not 

 differing in nature from the other ridges on the cephalo- 

 thorax and abdomen. Pseudo-stigmata small tubes, 

 rather dorsal, quite unmistakeable, strongly corru- 

 gated internally. Pseudo-stigmatic organs small, with 

 very short peduncles, and small, apparently almost 

 globular heads ; these, however, when dissected out 

 and examined with a higher amplification, are found 

 to be cup-shaped. Apodemata strong, and rather 

 conspicuous, not quite reaching the sternum, which is 

 not clearly marked. The dorsal surface of the cephalo- 

 thorax has some ridges, of which one pair, running 

 from the pseudo-stigmata across the base of the 

 lamellae, are straight and tolerably constant ; the other 

 ridges are irregular, and not similar in different speci- 

 mens. There are, however, two more or less longitu- 

 dinal ridges between the median line and the lamellae, 

 and these two may join anteriorly, and there are often 

 some short transverse ridges. 



Legs long for the genus ; fourth pair passing the 

 hind margin by the whole length of the tarsi, and more 

 than half the length of the tibiae. The joints are of 

 almost even thickness throughout. The peduncles of 

 the first two pairs of legs are rather long and thick. 

 The legs are somewhat smoother and lighter in colour 

 than the body. Hairs on the legs small and fine. 

 Claws tridactyle. 



Abdomen almost elliptical, somewhat narrowed an- 

 teriorly ; it is difficult, if not impossible, to say where 

 the abdomen finishes and the cephalothorax begins. 

 The notogaster is arched, but not strongly, and is 

 ornamented with a number of clearly defined ridges, 

 which vary greatly, no two specimens being alike. 

 The main ridges are mostly longitudinal, but are not 

 often quite straight ; they usually have a tendency to 



