231 



Lophomma herbigradum (Bl.) Rather plentiful every- 

 where on Eston Moor, but scarcer in Middlesbrough. Found 

 amongst rushes and leaves. 



Pocadicnemis pumila (Bl.) A curious little spider taken 

 among grass at Hesleden. Also at Staithes. 



Pepocranium ludicrum (Camb.) Not uncommon on the 

 Moors at Eston and at Lonsdale. 



Metopobactrus prominulus (Camb.) Two or three speci- 

 mens were taken at Hesleden in July. 



Minyriolus pusillus (Wid.) Amongst pine needles in Nor- 

 manby Intake Plantation. Also in Wilton Wood. 



Entelecara (Hypselistes), florens (Camb.) This very inter- 

 esting addition to the British fauna was discovered in one of 

 the bog holes on the northern slope of Eston Nab. Three 

 specimens in all were taken — a male in October and two 

 females in November. With the females a cocoon was 

 found. This cocoon was the shape of a tabloid, and contained 

 at the most thirty eggs. Similar cocoons were discovered 

 amongst rushes near the brow of the hill. 



This species had previously been reported from North 

 America, and forms another member of the somewhat large 

 group of animals and plants common to both hemispheres, 

 of which we have so many representatives in the Cleveland 

 District. (See plate). 



Evansia merens (Camb.) This mymecophile spider is 

 very abundant in our district, and is just as common on the 

 other side of the river. It occurs with Lasius niger and 

 Formica fusca, both at Eston and in Lonsdale. Affected 

 nests are easily distinguished, for the characteristic flat 

 cocoon containing but few eggs may be found on the roofing 

 stone of such nests. They are apparently two broods each 

 year in this district, for adults of both sexes followed by 

 immature specimens may be found in spring, and there is a 

 new generation of "babies" in September. A large number 

 of the specimens found with Formica fusca on the Guisbrough 

 side of Eston Moor are much darker and more clearly marked 

 than Pickard-Cambridge's type 



