618 Mr. Blackwall's Descriptions of new Species of Spiders. 



oval, very dark brown, convex and hairy externally, concave within, 

 comprising the palpal organs, which are higlily developed, little compli- 

 cated in structure, projecting upwards to tlie articulation of the third 

 and fourth joints, and are of a dark brown colour. 



SulficKs (Jistiintus is common in Denbighshire on stone walls, in the inter- 

 stices of which the female spins a cell of compact white silk attaclied to the 

 surface of the stones. In'the month of July she constructs in this cell a len- 

 ticular cocoon measuring ^th of an inch in diauieter, in wiiich she deposits 

 about 16 spherical, pale yellow eggs, not agglutinated together. The young, 

 even before they quit the cocoon, exhibit some of the marks most character- 

 istic of the species. 



Family Agelenid.t;. 



Genus Cœlotes. 



Oculi in seriebus 2 transversis parallelis rectis ; seriei anterioris et brevioris 

 intermedii supra margiiiem frontalem positi, paulo minores; ntriusque 

 latérales in tnberculis positi. Maxillœ fortes, labium versus curvatoe, ad 

 ])alporum insertionem et ad apices oblique truncatos inti^s pilis fimbriatos 

 dilatata\ Labium paulo longius quam latum, lateribus curvatis, apice 

 truncato. Pedes robusti, pari 4to longissimo, dein Imo, 3tio brevissimo. 

 Tarsi triunguiculati, unguibus 2 superioribus curvatis pectinatis, inferiore 

 prope basin intlexo. 



Cœlotes saxatiUs. {Drassus saxatilis, B]ack\v. Research, in Zool. p. 332. Amau- 

 robius terresfris, Koch, Die Arachn. b.vi. p. 45. tab. 192. fig. 463-4.) 



A description of this spider was originally given in the London and Edin- 

 burgh Philosophical Magazine, vol. iii. p. 436-7, under the name of Clubiona 

 snxatilis. Afterwards I was induced to remove it to the genus Drassits on 

 account of the curvature of its maxilkf (Researches in Zoology, p. 332). Sub- 

 sequent investigations, made with great care, have served to convince me that 

 it belongs to the Jgelenidcv, as it possesses several characteristics in couimon 

 with the spiders of that ftimily. The anterior part of the cephalo-thorax is 

 compressed ; the superior spinners are triarticulate, longer than the rest, and 

 have tlie papillte or spinning-tubes disposed on the under side of the terminal 



