319 



on the hinder half a scries of transverse curved black bars, each 

 interrupted at the middle. The sides are rather paler than the 

 upper part, spotted distinctly withk white and black spots. 

 The form of the clavate spines on the upper side of tho abdomen 

 is that of a racquet bat. 



Except in being rather larger the female does not differ from 

 the male. 



This spidor occurs under stones and dotachod pieoos of rock on 

 the eastern side of tho Isle of Portland, where, in the month of 

 July, 1 860, I found it in some abundance ; though after a long 

 search at tho corresponding season in 1875 I did not succeed in 

 finding a single example. 



As it appears to be undoubtedly distinct from the spider 

 doscribed by Baron Walckenaer as Thomisus chveatus, Savigny. 

 Mons. Simon has lately renamed it ; conferring upon it the name 

 of our vetoran arancologist, Mr. John Blackwall. 



OXYPTILA SANCTUARIA. 



TnoMistrs SANOTTTABius, Cambr,, Trans. Linn. Soo. xxvii., p. 405, 

 pi. liv., No. 8. 



The male moasuros in length 1 to 1J linos. 



This spocios is alliod to Oxyptila Blackwallii, Sim., but differs 

 from it in colours and markings, in the form of the radial joints 

 of the palpi, and in the less clavate form of tho spino-like 

 bristles on the abdomen. The sides of the cephalo-thorax 

 (which is very strongly compressed on the lateral margins of ths 

 caput) are of a doop brownish-black hue, mottlod and marked 

 with reddish yollow-brown. The longitudinal band is of a dull 

 reddish-yellow colour and encroaches on tho sides, at its hinder 

 part. The contral marking behind the eyes is short, brown- 

 black, divided longitudinally by a paler line, cleft or bifid before, 

 and its posterior, obtusely-angular, pointed extremity is con- 

 tinued to, or beyond, the thoracic junction by a distinct blackish 

 line. The caput has a few strong, slightly clavate, spiny bristles 

 on its fore part. The legs are of a dull darkish yellow-brown 



