54 



TERRESTRIAL CARBONIFEROUS ARACHNIDA. 



length of opisthosoma 7, width of the latter about 6 ; length of first leg from base 

 of trochanter 7, same of the third leg 8. 



Coseley, near Dudley. 



Type and only known specimen in the Collection of Mr. Walter Egginton. 



This species has the legs short as in G. angulatus, but differs in the shape of 

 the posterior border of the carapace, and of the seventh and eighth terga of the 

 opisthosoma, this region also being shorter and broader than in that species. 

 From G. li.incli it differs in the shortness of its legs and the shape of the posterior 

 border of the carapace, and from G. tuberculatum in its longer carapace, shorter 

 opisthosoma, shape of the posterior border of the carapace, etc. 



Geraphrynus torpedo, sp. nov. Plate III, fig. 1 ; Text-figures 26, 27, 



Body long and narrow, nearly four times as long as wide. Carapace about 



Pig. 26. — Geraphrynus torpedo, sp. n. ; dorsal surface, 

 about four times nat. size. — Coal Measures j Coseley, 

 near Dudley. 



I'lo. 



-Ventral surface of the same. 



one-third longer than wide, its median length about equal to that of the anterior 

 eight terga of the opisthosoma, its width about equal to the length of the ninth 

 and half the eighth terga, and therefore much less than half the length of the 

 opisthosoma; its posterior border evenly convex. Opisthosoma nearly twice as 

 long as wide, its width across the seventh tergum a little exceeding the length of 

 the eighth and ninth terga; the first and second terga very narrow in the middle 

 line, the median area of the first obliterated or overlapped by the posterior border 

 of the carapace, the third, fourth and fifth straight and subequal in length, the fifth 

 about half the length of the sixth, which is a little more than half the length of the 

 seventh, the latter about equal to the eighth, and both of them shorter than the 

 ninth. Fifth and sixth sterna of the opisthosoma subequal in length and shorter 

 than the seventh ; the sternal plate, corresponding to the third in the typical 

 species of Geraphrynus, as long as the fourth and marked by a transverse ridge ; 



