269 



seen projecting beyond the extremity of the appendage. There are no 

 horns on the dorsal surface, the outline agreeing closely with that of 

 A. conicus. (Palps described under Q — • male palps lost during pre- 

 paration.) Male genital field very like that of conicus. Length of first 

 pair of legs about ,8 mm, of last 1,44 mm, fourth segments of the 

 last pair spurred in the usual manner. 



Female: Length 1,28 mm, breadth 1 mm. Similar in shape to 

 A. caudatus de Geer. Dorsal impressed line incloses a larger area 

 than in the male, and is similarly narrowed in front. Palps with five 

 bristle-like hairs springing from the vicinity of the outer margin of 

 the second segment, three of these are placed in a group distally, and 



Fis. 6. 



Fig. 5. 



Fis-. 7. 



Fis. 8. 





Fig. 5. Arrhenurus Freemani n. sp. Dorsal view of male X 31 



drawn. 



legs and palps not 



Fig. 6. Extremity of body appendage. X 73. 



Fig. 7. Inner side of right palp of female, x 100. 



Fig. 8. Genital area of Q. x 31. 



there are two or three much shorter hairs on the inner side of the same 

 segment (these are seen directed downwards in fig. 7). The minute 

 tactile hair on the middle of the distal margin of the fourth segment 

 is distinctly forked. Genital field shaped much as in the accom- 

 panying figure. 



Locality: Both sexes of this species occurred in a pond on the 

 Grand Canal bank near Lucan, County Dublin, October, 1902. 



5) Arrhenurus ornatus George. 

 This distinct species is common and widely distributed with us, 

 and it seems equally common in England. So far as I am aware it has 



