Clare Island Survey — Acarinida. 



39 17 



Atractides anomalus C. L. Kuoh. 



Female. Length -793, breadth -665 mm. 



Rostrum long and rather slender, greatest 

 length of rostrum and maxillary part '363 mm., 

 breadth of capitulum -132 mm. (PI. II., fig. 14 

 a,b.) 



Epimera well produced beyond the front 

 margin of the body. Wedge-end of the first 

 pair, acute, separated by a slightly greater 

 distance from the area genitalis. Capitular 

 recess deep and rather narrow. 



Legs of moderate length, more slender and 

 not thickened at the extremities. 



Palps as figured by Piersig (" Deutschlands 

 Hydrachniden," plate xxyii., -fig. 69 d). 

 Lengths of the segments as follows : — first 

 •040; second -100; third -080; fourth -130; 

 fifth -025 mm. 



Mandible, length '396 mm. 

 Genital area as figured by Piersig (18, pi. 

 xxyii., fig. 69 a). 



Male. Length -640, breadth '512 mm. 



Epimera — second and third pairs very long 

 and much narrower at their hinder extremities, 

 median furrow between the inner margins 

 occupying more than half the distance between 

 the genital area and the capitular recess. Well 

 figured by Piersig (18). 



Genital area smaller, only slightly longer 

 than broad, and placed much nearer the hinder 

 margin of the body. Length '132, breadth 

 "121 mm. 



Atractides brevirostris n. sp. 



Female. Length '896, breadth -742 mm. 



Rostrum decidedly shorter, stouter, and 

 tapering more rapidly towards the apex; 

 greatest length, along maxillary shield to tip 

 of rostrum, -330 mm., breadth of capitulum 

 ■154 mm. (PI. II., fig. 13 b, c.) 



Epimera less produced in front, end of the 

 first pair approaching close to the area genitalis, 

 much as in A. complexus. Capitular recess 

 broader. 



Legs longer and more robust, with thickened 

 terminal segments. 



Palps, third and fourth segments a little 

 shorter, teeth on the second and third segments 

 stouter, central hump on the ventral side of the 

 fourth not so prominent, ;md the distal spine 

 on the inner side of the same segment is more 

 strongly developed. Lengths of the segments : 

 first -040; second -100; third -075; fourth 

 ■115 ; fifth 025 mm. (Plate II., fig. 13 e.) 



Mandible, length -352 mm. 



Genital area much as in A . anomalus. (PI. II., 

 fig. 13 d.) 



Male. Length -768, breadth -614 mm. 



Epimera — second and third pairs much shorter 

 and broader, median furrow between them 

 occupying less than half the distance between 

 the genital area and the capitular recess. (PI. II., 

 fig. 13 a.) 



Genital area larger, decidedly longer than 

 broad, and placed further away from the pos- 

 terior margin. Length '209, breadth '154 mm. 



Localities. — Owenwee Biver at Belclare, Co. Mayo, June, 1909 ; Biver 

 Lee at Carrigrohane about three miles from Cork. Collected in the latter 

 locality by Mr. F. Balfour Browne in July, 1907. 



Atractides amplexus Koenike. 



Carrownisky Biver near Louisburgh ; Owenwee Biver at Belclare ; stream 

 flowing from Lough Namucka, July. 



In Dr. Koenike's description of A. amplexus the large dorsal plate is said 

 to enclose the hinder end of the second frontal shield ; and in his drawing of 



R.I. A. PKOC, VOL. XXXI. 



39 



