Trapdoor Sjnders from Australia. 113 



The labium seems to be substantially the same as in Idiosorna, 

 being merely setose not spiny and sunk between the maxillge, 

 which are spiny anteriorly throughout their length ; the 

 sternum, too, is wider posteriorly, the width being 5"o and 

 the length 6*5 ; and the sigilla corresponding to the second 

 leg is removed farther from the margin. 



The mandible armed below with 9 internal, 8 external, and 

 8 teeth forming an intermediate set ; the tubercular teeth 

 forming the rastellum are restricted to the process and to 

 a short area on the margins above and external to it. 



Loc. Adelaide (S. Australia). 



EucYETOPS, gen. no v. 



Closely allied to Aganippe, but with different ocular ar- 

 rangement, the anterior laterals closer together, so that the 

 quadrangle formed by them and the posterior medians is a 

 little wider behind than in front, and only a little wider than 

 long, whereas in Aganippe this quadrangle is very noticeably 

 wider than long, and, considered from the outer rim of the 

 eyes, a little wider in front than behind ; again, the posterior 

 line of eyes in Eucyrtops is about three times as wide as the 

 anterior line (only about twice in Aganippe), and a line 

 drawn through the centres of the anterior and posterior laterals 

 will, if produced, cut the lateral margin of the carapace at a 

 point in front of the articulation of the third leg, while in 

 Aganippe such a line will emerge behind the articulation of 

 this appendage. 



Type Eucyrtops latior (Cambr.). 



Eucyrtops latior (Cambridge). 



Aganippe latior, Cambridge, Arm. & Mag. Nat. Hist. (4) xlx. p. 29, 

 pi. Yi. fig. 4 (1877). 



In this species the lower side of the tibia of the palp is 

 furnished externally and internally with long spines, those 

 at the distal extremity being stronger than the rest, and the 

 tarsus has 3 spines in its basal half and otliers at the apex 

 partially buried in the scopula ; the protarsus of the tirst 

 leg has two pairs of spines, while the tibia has 3 long 

 apical spines and 1 farther back on its lower side ; on the 

 second leg the tibia has a pair of long apical spines below and 

 some long slender ones behind, the protarsus an anterior 

 pair and some half-dozen irregularly arranged posterior 

 spines ; on the third leg the patella has some half-dozen, and 

 the tibia two spines in front, while the protarsus has two 

 series of spines above and a itv^- apical and one posterior 

 Ann. dc Mag. N. Hist. Ser. G. Vol. xix. 8 



