B. I. Pocock — On Eophrynus and Allied Arachnida. 441 



convex extremity. The elevated areas just described are roughened 

 with coarse, sometimes anastomosing, granules. This elevated portion 

 of the carapace occupies rather more than the median third of its 

 area. Behind and on each side of it the carapace projects horizontally 

 and exhibits a coarse sculpturing of pits and anastomosing ridges. 

 The area behind the elevation is short, and marked with a narrow- 

 transverse recurved crest which equals the width of the posterior 

 end of the elevation ; the area at the sides is impressed with two 

 grooves passing externally into marginal notches which give rise 

 to the trilobed appearance of this region. The three lobes overlie 

 the basal segments of the second, third, and fourth legs (fourth, fifth, 

 and sixth appendages), the grooves and marginal notches corre- 

 sponding to the interspaces between them and representing, no 

 doubt, the radiating grooves of the carapace of the Araneee and 

 Pedipalpi, which are known to be the external indications of the 

 points of attachment of the dorsal muscles uprising from the 

 entosternite. Below the lobes the edge of the carapace appears as 

 a narrow but high ledge which apparently rests upon the coxae 

 of the appendages. The anterior portion of the carapace at the 

 sides and in front of the median elevation where the first and second 

 pairs of appendages emerge is unfortunately somewhat crushed, 

 and the exact details of its structure are difficult to trace. It is 

 noticeable, however, that there is no evidence of the presence of 

 a frontal sclerite articulated to the fore border of the carapace, such 

 as is found in Cryptostemma and is alleged by Haase to be present 

 in Kreischeria. Apart from the oval pits above described I can 

 find no trace of any structures resembling eyes, though it is 

 almost certain these organs were present in the living animal, 

 considering the size to which it attained. 



The sternal area of the prosoma is longer than wide, but con- 

 siderably wider than that of all existing orders of terrestrial 

 Arachnida with the exception of the Araneee, Amblypygous Pedipalpi, 

 and Acari. As in the Amblypygi (e.g. Phrynidte), it was apparently 

 membranous at the sides, but is furnished mesially with an anterior 

 and a posterior sternal plate. The latter is short and narrow, and 

 in the specimen has been displaced from the middle line so as to 

 lie in front of the inner extremity of the coxal segment of the sixth 

 appendage of the left side. The anterior plate, on the contrary, has 

 been thrust over towards the right side of the specimen. It is much 

 broader and longer than the metasternite, and lies between, though 

 not in contact with, the coxal segments of the third, fourth, and 

 fifth pairs of appendages (i.e., the first, second, and third walking- 

 legs). It is somewhat deeply bi-emarginate laterally, the emargina- 

 tions corresponding to the convexly rounded proximal ends of the 

 coxse of the fourth and fifth appendages. Its anterior portion is 

 lanceolate, and extends forwards between the coxae of the appendages 

 of the third pair almost as far as those of the second pair or palpi. 

 No trace of a prosternal plate corresponding to the last-mentioned 

 appendages is discernible. 



With regard to the structure and relations of the large sternal 



