Halber'I' — The Aearina of the Seashore. 125 



also occurs on the open seashore at Malahide amongst wet moss growing on 

 calcareous tuffa where a streamlet flows on to the shore, June. 



Described by Bei'lese from Italian specimens found in moss and amongst 

 dead leaves (16). It is rather a large species (about 670// x 450/t), belonging 

 to the group with modified tarsi and ambulacra. The dorsal shield has 

 strongly squamose markings, especially towards the sides, and the hair 

 armature is strong. The plates of the ventral surface greatly resemble 

 those of E. italicus Berlese (figured in 25), except that the ventro-anal 

 plate is much smaller, and is of a roughly cordate shape length, 220/< ; 

 breadth, lIQjx). Not previously recorded from the Britannic area. 



Lasioseius salinus sp. nov. (PI. XXI, fig. 7 a, b ) 



A small species belonging to Leioseius, a sub-genus, briefly diagnosed by 

 Berlese as follows : — " Ex genus Lasioseius. Pedes breves et robusti. Truncus 

 elongatus, lateralibus subparallelis. Typus : Z. Z. minuscnlus, Berl." 

 (16, p. 45). 



Female (fig. 7 a): Length about iiO/t; breadth, 260ju. Colour pale brown. 

 Shape as is usual in Lasioseius. Dorsal plate sub-parallel, reaching end 

 margin of body ; sides weakly serrate ; surface finely punctured and reticulate. 

 Hairs weak ; two pairs on the end margin stronger than the others. Sternum 

 rather short ; genital plate long and narrow, much as in E. scrratu-s, Halbt. 

 Ventro-anal plate large, broader than long, flattened on the front margin, 

 rounded posteriorly, minutely punctured, and there are about six pairs of 

 small hairs. Peritreme close to the legs, it is joined with the inner margin 

 of a well-developed plate, post-stigmatic extremity curved inwards and 

 partly enclosing the last pair of legs. Maxillary plate quadrate, hair 

 armature normal. Chelicerae : the free chela is armed with two strong 

 teeth ; fixed chela with about four very weakly developed teeth, Legs short 

 and stout, tarsus of last pair figured (fig. 7 b). 



This species appears to differ from the two described European species, 

 Z. mimis<nilus and Z. veinistuhi^, in the less elongate shape, the shorter sternal 

 plate, the broader ventro-anal shield, and also in the relatively shorter firet 

 pair of legs. 



Habitat. — Found under dead shells in a salt marsh on Malahide Island, 

 May, 1915. 



Lasioseius fucicola sp. nov. (PI. XXI, fig. 8 a, d.) 



A veiy distinct species, which is chielly remarkable for the long pcnicillate 

 hairs on the margin of the body. The following is Dr. Berlese's diagnosis of 

 the sub-genus Zereoseius, to which it belongs : " Zercoscius n. sub-genus. 



