284 BEITISH TYROGLYPHIM. 



correct when the foot is raised, or the creature is dead, 

 or soaked in reagents ; the form is quite different in the 

 living creature with its foot on the ground. He 

 apparently drew and described from preparations or 

 specimens in spirit or glycerine ; as may be judged 

 from the shrinking of the eggs in the body of the 

 female, which does not occur in life. 



Female. Male. 



Length . . . . . '5 to TO mm. '4 to -7 mm. 



Typical length of English specimens 



about . . . . . '6 mm. '5 mm. 



Typical breadth about . . '35 "28 



,, length of legs, first pair, about . '25 ,, '25 



,, ,, second pair, about '22 '22 



third pair, about . '25 '20 



,, ,, fourth pair, about '33 '25 



All the above measurements of these legs are with- 

 out the caroncle and claw. 



Haller makes his measurements much larger than 

 the English specimens which I have seen ; but his 

 measurements and drawings seem to me to be made 

 from dead specimens in fluid ; these are usually some- 

 what distended. 



Colour light lemon-yellow, sometimes with a slight 

 greenish tinge. Legs, rostrum, and epimera red-brown 

 or brownish red. 



Texture dull, without any polish ; not quite opaque ; 

 rather coarsely granular with closely packed raised 

 dots about 250 to the millimetre; on the underside of 

 the < they are much finer, and are therefore not 

 depicted on fig. 4, as they would not be seen by most 

 people with the amplification employed. 



Female. Cephalothorax broadly conical; not divided 

 from the abdomen by any sulcation or line on the 

 dorsal surface, although the line of demarcation may 

 usually be seen on the ventral surface. Abdomen 

 almost parallel-sided at first ; later, when the eggs are 

 getting ripe, the abdomen is rather wider near the 

 posterior end than at the shoulders, but narrows in 

 somewhat towards the actual hind margin ; which 



