12 Proceedings of the Royal Irish Academy. 



separated by distinct intervals ; these series are comprised between 

 two rows ol black spots, which converge towards the spinners, two of 

 them, on each side, being confluent with those of ultimate and penul- 

 timate pairs of the intermediate series of minute spots ; a few very 

 minute black spots also occur on the posterior half of each side. The 

 •eyes are seated on black spots, and form two transverse rows on the 

 anterior part of the cephalothorax ; the anterior row, which is the 

 shorter and straight, is situated immediately above the frontal margin; 

 the posterior row is slightly curved, having its convexity directed up- 

 wards, and the interval between the intermediate eyes is greater than 

 that which separated them from the lateral eyes of the same row ; the 

 four intermediate eyes describe a trapezoid, the two anterior ones, which 

 form its shortest side, being rather the largest of the eight. The ceph- 

 ulothorax is oval, rounded in front and on the sides, convex, glossy, 

 with a very slight narrow indentation in the medial line of the poste- 

 rior part ; it is of a dull-yellow colour, with a fine, irregular, brown 

 lino on each side of the cephalic region. The falccs are conical, rather 

 prominent, and armed with a few small teeth on the inner surface ; 

 the maxillae are enlarged and somewhat divergent at the extremity ; 

 the lip is oblong, and broader at the base than at the apex, which is 

 I'ounded ; the sternum is oval, with small prominences on the sides, 

 opposite to the legs. The legs are long, and provided with hairs and 

 sessile spines, dark-coloured hair-like papillae occurring on the inferior 

 surface of the metatarsi and tarsi of the first and second pairs ; the 

 fourth pair is the longest, then the second, and the third pair is the 

 shortest ; each tarsus is terminated by two curved, pectinated claws, 

 below which there is a small scopula ; the palpi are short, and the 

 digital joint is well supplied with hairs, which give it the appearance 

 of being somewhat enlarged, particularly at the extremity. These 

 parts have a pale-yellowish hue, the cephalothorax being rather the 

 •darkest. 



Pamily CINIFLONID^E. 

 Genus Okithyia, Blachw. [Uloborus, Walch.'] 



OniTnYIA WlLLIAJISir. 



Orithyia Williamsii, JBlachio., Ann. and Mag. cf Nat. Hist., ser. 3, 

 vol. ii., p. 331 ; vol. viii., p. 443, and vol. xviii., p. 453. 



Orithyia luteola. 



Orithyia luteola, Blachc, Ann. and Mag. of Nat. Hist., ser. 3, vol. 

 xvi., p. 89. 



Oeithyia gnava. 



Orithyia gnava (female), Blachu., Ann. and Mag. of Nat. Hist., ser. 

 3, vol. xvi., p. 90. 



The male of this species, which seems to have escaped the observa- 

 tion of arachnologists, is not so robust as the female, but its legs are 



