ANTHRACOMARTUS. 



65 



equal to its own anterior witltli ; leno-tli of the median lamina of the seventh about 

 two-thirds the length of that plate. Palp with femur, patella, tibia and tarsus 

 al)0ut three-quarters the length of the carapace ; the femur and patella stout, the 

 tiljia and tarsus thinner. Trochanter and femur of first leg al)out as long as the 

 first four terga of the opisthosoma ; of fourth leg about as long as the first five 

 terga. 



Mensuremeuis in mm. (of type). — Total length 25 ; length of carapace 9, width 8 ; 

 length of opisthoso7ua 10, width about 10 ; median length of its first tergum 2"8, 

 of second + third o; four distal segments of palpus 6; trochanter and femur of 

 first leg 7, the rest of the liml) 8-5; trochanter and femur of second al)out 7, the 



Fifi. .Tl. — Antlu-acomarlus Inndi, sp. n. ; siiggested restor.ation of the ventral sm-face, about two and a half times 

 nat. size.— Coal Measures ; Coseley, near Dudley. From Dr. Wheelton Hind's specimen. No. 1. 



rest of the limb 10*5 ; trochanter and femur of third about 7'5, of fourth 

 about 8. 



Dudley, and Coseley, near Dudley. 



The type of this species is a cast (No. 12148), in the Geological Survey Museum, 

 of the underside of the dorsal surface of a specimen from Dudley belonging to 

 Dr. Kidston. 



In addition to this 1 have seen the following specimens which may l^e referred 

 to the same species. 



(1) One in Dr. Hind's Collection showing the dorsal surface from the lower side 

 and the ventral surface from the upper side, with the palpi and the four pairs of 

 ambulatory limbs at least as far as the extremities of the femora ; also the coxse, 

 represented by hollow spaces, and the intervening sternal area. The first leg 

 appears to be relatively longer than in the type and has a considerably larger 

 angular prominence in front; and the first tergal plate of the opisthosoma seems 



y 



