32 TERRESTRIAL CARBONIFEROUS ARACHNID A. 



not only in the examples that I have seen, but also in Scudder's example from 

 Mazon Creek, which I propose to call Grseophonus scudderi. 



Scudder describes this specimen as punctured. I do not doubt, however, that 

 it was in reality finely granular. 



It is somewhat singular that although only one undoubted specimen of 

 Grseophonus has been discoA r ered in North America, and none have been recorded 

 from Bohemia, the genus is represented in Britain by many specimens in the 

 Carboniferous Beds of Staffordshire and South Wales. 



Grseophonus anglicus, sp. nov. Plate I, fig. 4. 



Carapace approximately as long as wide, cordate, narrowed and produced 

 anteriorly; the median ocular tubercle rounded, placed near the centre of the 

 narrowed anterior portion, and defined behind b}^ a crescentic groove; the area 

 behind the tubercle rather flat; the median portion of the posterior part of the 

 carapace a little elevated and marked with three impressions or muscular pits, one 

 median in front and a pair, smaller and shallower, behind ; from points on each 

 side near these impressions radiate three grooves towards the margin. Opisthosoma 

 elliptical, longer than wide, the terga marked with the normal muscular impres- 

 sions. The distal end of the femur of the fourth leg, in its natural position, 

 extending back beyond the extremity of the opisthosoma. 



Tibia of palp or chela short, a little more than twice as long as wide, its 

 length a little exceeding half the length or width of the carapace; its inner 

 edge apparently armed with two spines ; tarsus of chela apparently not less than 

 half the length of the tibia, and also armed internally with two spines. 



Approximate measurements in mm. — Total length 20 ; median length of carapace 

 7"5, lateral length 8 - 5 ; greatest width 8 - 5, width across front on a level with the 

 ocular tubercle 2 - 5 ; length of opisthosoma 11 ?; length of segments four to nine 

 7'5; width of opisthosoma 8 - 5; length of tibia of chela 4, width 2. 



Coseley, near Dudley. 



The type, above described, is in the Collection of Mr. Walter Egginton (No. 1). 



In addition to the type Mr. Egginton's Collection contains several examples of 

 Grseophonus, which I provisionally refer to this species. All are from Coseley. 



The following points in them may be noted : 



No. 40. Carapace approximately as in the type, the anterior oculiferous 

 projection clearly shown. The terga of the opisthosoma are granular, and have a 

 row of coarse granules along the posterior border. This region is narrower as 

 compared with its length than in the type, the difference being perhaps sexual. 

 Total length 14 mm., length of carapace 6, width 6 - 5; length of opisthosoma 8; 

 femur of fourth leg about 8. Figured in PI. I, fio-. 4. 



No. 2 shows more of the appendages than are seen in the type and No. 40, but 



