GERAPHRYNITS. 



51 



Coseley, near Dudley. 



Type and only known specimen in the Collection of Dr. Wheel ton Hind. 



Geraphrynus hindi, sp. nov. Text-figures 21, 22. 



Carapace of about the same shape as in G. angulatus. The anterior five terga 

 of the opisthosoma more sinuous transversely, the lateral portion of the anterior 

 borders slightly convex and the median areas slightly concave. In G. angulatus the 

 third is scarcely sinuous, and the fourth is straight transversely. The posterior 

 portion of the opisthosoma relatively much wider than in G. angulatus ; the posterior 

 border of the penultimate or eighth sternal plate about as long as the carapace and 



Fig. 21. — Geraphrynus hindi, sp. n. ; dorsal surface Fig. 22. — Ventral surface of the same. 



with palpi and legs of first and third pairs, four 

 times nat. size. — Coal Measures; Coseley, near 

 Dudley. Wheelton Hind Collection. 



a little greater than the median length of the eighth and ninth sternal plates ; 

 the posterior width of its median area much greater than its length. In G. 

 angulatus, on the other hand, the posterior width of the plate is much less than 

 the length of the carapace or than that of the eighth and ninth sterna, and the 

 posterior width of its median portion is about equal to its length. Legs much 

 longer than in G. angulatus, the trochanter, femur, patella and tibia, i. e. the 

 second, third, fourth, and fifth segments of the third leg, exceeding the median 

 length of the opisthosoma. In G. angulatus these same segments in the fourth 

 leg are much shorter than the median length of the opisthosoma, and since the 

 fourth leg in this genus is longer than the third, it is evident that the segments in 

 question in the fourth leg of G. hindi would greatly exceed the median length of the 

 opisthosoma. 



