ANURIDA MARITIMA, GUER., AND ITS ENEMIES. 71 



7. Antaxius brunneri, Erauss. 



Femora all unarmed; prosternum with very blunt spines; ovipositor 

 incurved, shorter than the posterior femora ; the pronotum has a 

 median carina ; the colour is greyish-black ; the elytra are yellow, 

 with the lateral margin narrowly bordered with chestnut. Length of 

 body, 18mm. -19mm. J ; 19mm. -22mm. 2 ', of pronotum, 4.5mm. 

 $ and J ; of elytra, 6mm. $ , 2mm. $ ; of posterior femora, 15mm. g , 

 16mm. 2 ; of ovipositor, 11mm. -12mm. 5 . 



In stony places at Piz Languard, near Pontresina, Bad Ratzes, the 

 Seisser Alp ; in the northern Alps, in a small valley on the road from 

 Eagaz to Bad Pfaffers. 



8. Antaxius capellei, Cazurro. 



Varies from dark ochreous-grey to livid ; differs chiefly from A. 

 Mspanicus in the shorter ovipositor and elytra. Length of body, 

 22mm. J ; of pronotum, 6mm. $ ; of elytra, 15mm. ? ; of posterior 

 femora, 18mm. $ ; of ovipositor, 13-5mm. J . 



Taken on the top of the Pico de San Jeronimo, on the top of 

 Montserrat, in Catalonia. 



(To be continued.) 



Anurida inaritima, Guer., and its enemies. 



By RICHARD S. BAGNALL. 



A grey and sluggish Apteron, Anurida maritime/,, Guer., is often 

 found living gregariously beneath stones, etc., below high-water mark, 

 and, at high tide is sometimes to be observed standing on the water 

 of quiet pools. In July, 1906, I found the species on the shores of 

 Ayrshire, Arran, the Cumbraes, Kyles of Bute, etc., and the following 

 month on the Northumberland and Durham coasts, and invariably 

 found living with it, also gregariously, the peculiar Staphylinid beetle 

 Micralymma brevipenne, Gyll., which curiously enough strongly 

 resembles the Anurida. Ultimately I found that Micralymma preyed 

 chiefly, if not exclusively, upon the Apteron with which it associates, 

 its chief care upon attacking being to raise its prey from the surface 

 upon which it rested at the time of attack. 



Aepus marinas, Strom., though local, was found in great profusion 

 below high-water mark in all the localities mentioned above, and 

 though it does not, as a rule, live with the Anurida, yet it preys 

 largely upon the young forms of the Apteron in question, as also no 

 doubt does Aepus robi/ni, Lab. 



Yet still another beetle, Cillmus lateralis, Sam., have I seen 

 devouring this poor persecuted species of Collembola, but whether it 

 forms the habitual food of ( 'illenus or not, it is difficult to say. 



I have been informed that a peculiar Hemipteron, Aepophilus 

 bonnairei, Sign., also preys on Anurida maritima, but, unfortunately, I 

 cannot recall my authority for making the statement. 



In October, Dr. Eandell Jackson sent me some hundreds of 

 specimens of Anurida maritima from the Isle of Man, and with these, 

 examples of Micralymma brevipenne and Aepus marinas, the former of 

 which he had observed devouring the Anurida, and he further 

 mentioned the fact that a rare maritime Chernetid or Pseudo-Scorpion 

 (i)bisium maritimum, Leach), subsists on A. maritima also. I may 

 add that I have observed the common Pseudo- Scorpion (Obisium 

 muscorum, Leach), with a well-known Apteron [Anura muscorum, 

 Tempi.), in its clutches. 



