94 T. THORELL, 
as the type of a separate genus, Lithyphantes NOB. = Phrurolithus (C. KOCH) 
OnLERT), and lastly " Th. lunatum”, which however approaches nearer to 
Th. sisyphium than to "Th. 4-punctatum”, and is also by most recent arach- 
nologists (lately by MENGE) referred to the same genus as the former of 
these two species. Steatoda (SUND. ought then to be considered as very 
nearly synonymous with Æucharia (©. KocH) Ont. — In Rec. crit. aran., 
p. 108 (1856), I adopted the genus Steatoda in the full extent it had re- 
ceived from SUNDEVALL, i. e. as comprising St. bipunctata and castanea, as 
also some species, which I then supposed ought to be united in the same 
genus with these, a eompass which however, as has been said, must be 
considerably curtailed. MENGE has afterwards used the generic name Stea- 
toda for Th. sisyphium ete., which according to what has here been shown, 
is not right; the species of Steatoda (SUND.) are by him called Eucharia. — 
Of C. Kocn’s Phrurolithus, at least PA. ornatus (Die Arachn., loc. cit.) be- 
longs to Steatoda, of his Æucharia again E. atrica to the Epeiroid genus 
Zilla (C. KocH) Westr.— The name Steatoda has the right of priority in 
preference to Eucharia, which moreover had already in 1816 been assigned 
by HÜBNER to a genus of Lepidoptera. 
The claws of Steatoda are far more powerful than those of Theri- 
dium, but still tolerably long. The free end of the superior tarsal claw is 
somewhat thickened about the middle; the teeth are thick, not long, gener- 
ally 7—8 in number; the inferior tarsal claw has one blunt tooth. The 
palpal elaw has ordinarily about 6— teeth, gradually increasing in length, 
and pointing forwards. — Such is the case in S. castanea and bipunctata. 
Gen. 15. LITHYPHANTES wx. 
Deriv.: Ados, stone; vpdvens, weaver. 
Syn.: 1805. Theridium Warck., Tabl. d. Aran., p. 72 (”2° Fam., Les Arrondies, Rotun- 
date” ad partem). 
1833. Steatoda SUND., Consp. Arachn., p. 16 (ad partem). 
1837. Eucharia C. Koch, Uebers. d. Arachn.-Syst., 1, p. 7 (ad partem). 
1839. Phrurolithus 1D., Die Arachn., VI, (ad part.:) p. 100, 105—109. 
1861. Theridium WEsTR., Aran. Suec., p. 151 (ad partem). 
1864. x : subgen. Phrurolithus [Phrurolithum] Sım., H. d. Araignées, p. 168 
(ad partem). 
1867. Phrurolithus OHL., Aran. d. Prov. Preuss., p. 33. 
1869. Eucharia MENGE, Preuss. Spinn., IIT, p. 260 (ad pawtem). 
Type: Lithyphantes corollatus (LINN.). 
