Mr. Thompson's Additions to the Fauna of Ireland. 477 



being distant ; the first line, which is somewhat hent, contains 

 four ej'es, placed on the front margin of the cephalothorax at 

 nearly equal distances from each other; the two intermediate 

 eyes are much the largest. The second line contains two very 

 minute eyes, somewhat removed from the edge of the thorax ; 

 they are placed rather nearer the outer eye of the first line than 

 the outer is to the intermediate ; the third line contains two 

 eyes, one on each side the margin of the thorax, the space be- 

 tween the outer eye and the first line being equal to the distance 

 between the outer eyes of the first line. 



Cephalothorax flat, transverse, not so wide as the body, covered 

 like it with papillee. 



Abdomen as broad as long ; in front straightish ; behind somewhat 

 pointed, the sides rounded ; it is flat and compressed, and 

 somewhat convex above. 



Hab. Sierra Leone. Rev. D. F. Morgan. — Brit. Mus. 



Pholcus geniculatus, n. s. 

 Body above yellowish, with at least twelve blackish brown spots, 

 eight in the centre, arranged in pairs, and decreasing in size as 

 they approach the apex : sternum and broad line down the 

 centre of body : beneath blackish brown : legs reddish yellow ; 

 at the first joints ringed with blackish and pale whitish yellow; 

 last joint pale, without two blackish rings. 



Maxillec of a long triangular shape, and almost meeting over the 

 mentum ; the palpi proceed from the nearly right angle at base, 

 and have the terminal joint much shorter than the fourth and 

 second, which are almost equal in length. 



The mentum seems somewhat square. 



Cephalothorax nearly circular, rather broader than long, somewhat 

 truncated behind, and deeply impressed in middle ; it is as wide 

 as the longish oval abdomen : legs very long and slender, nearly 

 smooth, except last joint; first longest ; third shorter than second 

 and fourth, which are nearly equal. 



Hab. Brazil, near Rio de Janeiro. C. Darwin, Esq. 



XLIX. — Additions to the Fauna of Ireland. By Wm. Thomp- 

 son, Esq., Vice-Pres. Natural History Society of Belfast. 



Of the few vertebrate animals treated of in the present com- 

 munication, one only can be announced -with the certainty 

 that is desirable, as Irish : the others are noticed to induce 

 further attention to them, and at the same time to enable any 

 one interested in the subject to form his own opinion respect- 

 ing the propriety of their introduction, even with doubt, into 

 the Fauna. 



Mammalia. 

 Mus messorms, Shaw ? Harvest Mouse. May 12, 1838. — Mr. 

 Adams, gamekeeper at Shane's Castle Park (co. Antrim), mentioned 



