EOCTENIZA. 33 



the anterior portion of the carapace is concealed ; there is no evidence therefore that 

 it projected forwards as in the other specimen. The greater portion of the chela 

 is preserved, and the chelicerse project forwards between their bases as a pair of 

 slender rods. The coxae of the posterior three pairs of legs are to be seen 

 radiating from the narrow sternal area, and the legs of the second and third pairs 

 are preserved nearly down to the ends of the tibiae. The femur of the fourth leg- 

 is noticeably shorter than in No. 40. This difference may possibly be a question 

 of age, the specimen now described being smaller than No. 40. In the chela 

 the femoral segment appears to be spined internally. Approximate measurements 

 in mm.: Total length 11; median length of carapace 3'5, width 4; length of 

 opisthosoma 6'5, width 5 ; length of femur of second leg 4, of third 5, of fourth 

 5'5; coxa and trochanter of chela 2, femur 2, tibia 2 - 5. 



No. 20 : Larger than No. 2, but showing almost exactly the same features ; the 

 femur and tibia of the chela armed internally with a pair of spines. Approximate 

 measurements in mm.: Total length 15 - 5; length of carapace 5, width about 6; 

 length of opisthosoma 9, width 6'5; length of femur of second leg 7, of third 

 7'5, of fourth 9; length of femur of chela 3, its width l - 8; length of tibia of 

 chela 4, its width l - 8. 



In Mr. Henry Johnson's Collection from Coseley there is a specimen less well 

 preserved than those described above and showing no points worthy of special 

 comment. Its total length is about 13 - 5 mm., of which the carapace is 5 mm. and 

 the opisthosoma 8'5 mm. ; femur of third leg 6 - 5 mm. 



In the Museum of the Geological Survey, Jermyn Street, there are a well- 

 preserved opisthosoma, measuring 15 mm. long and 8 mm. wide, and a carapace 

 measuring 4"5 mm. long and mm. wide, which perhaps belong to the same 

 species. They were found at the tip of an abandoned shaft (Grlasbrook's) close 

 to Cadoxton village, one and one-eighth miles north-east of Neath Station in S. 

 Wales. There is no reason to suppose that these fragments belong to the same 

 specimen. It may be noted that this carapace bears considerable resemblance to 

 that of G. scudderi, but has the produced anterior region larger. 



Order ARANEffl, Sundevall. 



Suborder MESOTHEL,E. 



Genus EOCTENIZA, nov. 



Generic Characters. — Carapace with its anterior portion somewhat sharply con- 

 stricted to form a narrow, rounded, elevated, and convex cephalic area, defined 

 from the large and broadly cordate posterior portion by a pair of shallow grooves, 



5 



