274 Air. W. F. dc Vismes Kane on 



moderately elonp^atp, not compressed, pilose; basal joint of 

 the jiosterior short, second and fiftli of about equal len2;th. 

 Front co.v(v lar^e, prominent, and conti<2;uou^? ; the middle 

 pair widely separated. Sternal himina lar^re and plane, 

 tapering from tiie b:ise of the metasternum to beyond the 

 middle coxa?. Mesosternal process vertical and short, its 

 suture curvate. 



This is nearly allied to Hiidrostygnus, but may be readily 

 distin2;uished therefrom by the large j/romin^nt coxfe. The 

 anteniiai differ and the club is shorter and broader, and the 

 maxillary palpi are less slender. 



Thomosi's guanicola, sp. n. 



Ohiong-ovalj nude, moderately nitid, nigro-piceous ; lej^s 

 and lateral margins pitchy red ; palpi and anteniue usuall}"- 

 testaceous ; body closely and moderately finely punctured. 



Head not half the width of the thorax, longer than broad, 

 subconical. Thorax almost twice as broad as it is lon^-, 

 regularly curvedly narrowed towards the front, lateral margins 

 well developed. Scutelluni triangular. E'ytra with ten 

 series of distinct but not coarse punctures on each ; tli3 

 sutural at the apex almost form stride. 



Underside nigrescent, mostly densely and finely sculptured, 

 with short, inconspicuous, dark ashy pubescence. Abdomea 

 with five segments, the three central nearly equal, the basal 

 subcarinate along the middle. 



Length 3^, breaJtii 1| lines. 



Bounty Islands. 



Found by Mr. L. Cockayne feeding on deposits of guano. 



Auckland, New Zealand, 

 27th August, 1903. 



XL. — Niphargus Kochianus, Batf, la an Irish Lake and 

 N. subterraneus, Leach, in Kent. By VV. F. de Vismes 

 Kane, M.R.LA. 



[Plate YIII.] 



TuE following notes on the occurrence of one of these blind 

 crustaceans in the open waters of Lough Mask will be of 

 value, especially as in many respects they tend to confirm cer- 

 tain opinions held by Forel, ILimbert, and others in connexion 

 with allied species of Amphipoda. Several genera and many 



