28 . The Irish Naluralisi, 



Near the entrance we found two or three earthworms, one of 

 which I have sent to the Rev. H. Friend, who pronounces it 

 to be Allurus JIaviis, a form described bj^ himself and not 

 hitherto recorded from Ireland. He has kindly furnished a 

 short account of this worm, which will be found at the end of 

 the present paper (p. 35). 



I now proceed to describe in detail the four other animals 

 which we found. 



ARACHNIDA. 



ARANEIDA. 



THEKIDIIDAi. 



Porrhomma myops, Simon. 



(Plate 2, figs. 1-3.) 

 This species was described by M. Simon* from a female taken in the 

 cavern of Espezel, Department Aude, in southern France Another 

 female has since been found in Dorsetshire by Rev. O. P. Cambridge 

 (probably in some underground locality), and this specimen has recently 

 been recorded and (in part) figured by Rev. F. O. P. Cambridge.- One of 

 my females hasbeen compared by Rev. O. P. Cambridge with his specimen 

 (which was named by M. Simon), and he kindly informs me that he 

 cannot differentiate them. It is possible, in this genus, that two indis- 

 tinguishable females might have to be referred to distinct species, were 

 their males known. I think it better, however, to consider the spider 

 from Mitchelstown as P. myops until a male shall have been discovered in 

 the French cave, and shown to be distinct from that now described. 



Length of male, 2 mm. ; of female, 2.5 mm. 



Cephalothorax and falces, pale orange ; head-portion high and convex, 

 specially in the male, clothed with rows of hairs, which are longer in the 

 male (fig. i). 



Eyes very small ; hind-centrals two diameters apart, fore-centrals 

 nearly in contact ; laterals in contact, four or five diameters from centrals. 

 In my male the centrals are almost obsolete. Clypeus twice the width of 

 ocular area (fig. 2). 



Palpal organ of male with strong rounded prominence beneath falci- 

 form process (more marked than in the nearly allied species P. egeria^ 

 Simon); apex of bulb regularly conical, somewhatblunt (obliquely conical 

 and sharp in P. egeria), with two strong curved spines (one bent in form 

 of S, not present in P. egeria) (fig. i). 



Legs very pale straw colour, long and slender; metatarsi without 

 spines. Femur of first pair with one dorsal spine about the middle, and 

 one lateral towards the apex. Femur of second pair with one dorsal 

 spine (female) ; without any spine (male). The femora of the male, 

 specially the first pair, longer and more slender than those of the female. 



^ Les Arachnides de France, vol. v., p. 358. Paris, 1884. 



2 Ann' Mag, Nat. Hist. (6), vol. xiii., 1894, pp. 100, I07, pi. ii., fig. 6. 



