126 T. THORELL, 
Ciniflo humilis BLACKW. (Spid. of Gr. Brit, I, p. 145, Pl. IX, fig. . 
2), of which species I have myself taken a female at Pyrmont in Germany, - 
and received English specimens from the Rev. Mr. CAMBRIDGE, differs too 
much in the relative size and position of the eyes etc. from the genus 
Amaurobius (C. KOCH) nos. (Ciniflo BLACKW. ad max. part.), to be allowed to 
remain in that genus. This spider has recently been described by MENGE 
(loc. cit.) under the name of Lethia varia. — MENGE reckons Lethia to 
his Theridide. 
The superior tarsal claws of L. humilis Q are rather stout, much 
curved, strongly pectinated, with (on the 1* pair of legs) about 8—10 long 
straight, coarse, parallel and very close-set teeth directed a little forward; 
the inferior claw has two very long, curved, pointed teeth and a very small 
point behind them. The claw of the palpus is tolerably weak, uniformly 
and much curved, and armed with about 4 rather long and pointed teeth 
pointing forward and gradually increasing in length. 
Gen. 5. AMAUROBIUS (€. Koch). 1837. 
Deriv.: duavo6Buos, living in the dark (duavoos, dark; Bow, live). 
Syn.: 1805. Clubiona Warck., Tabl. d. Aran., p. 41 (ad part.: "4* Fam. Les Parques, 
Parce”). 
1837. Amaurobius C. Koon, Uebers. d. Arachn.-Syst., 1, p. 15 (ad max. part.). 
1841. Ciniflo Buackw., The differ. in the numb. of eyes ete., p. 607. 
1861. »  ID., Spid. of Gr. Brit., I, p. 139 (ad maz. part.). 
1861. Amaurobius Wesrr., Aran. Suec., p. 373. 
1864. 5 SIM., H. N. d. Araignées, p. 138 (ad mam. part.). 
1868. x L. Kocn, Die Arachn.-gatt. Amaur., Coel. u. Cyb., p. 4. 
Type: Amaurobius fenestralis (STROM) (= Ar. atrox DE GEER). 
Instead of the name given by C. KocH to this genus, BLACKWALL 
makes use of the newer name Ciniflo BLACKW., on the ground, that KocH 
has united under the name of Amaurobius species, that can never be allowed 
to remain together under the same generic name, nay, that in BLACKWALLS 
opinion belong to quite different families '). That this reason cannot be ad- 
mitted, is easily seen: one would thus for consistency's sake be obliged to 
cashier a great many good and universally accredited generic names, e. g. 
both Theridium and Drassus, because WALCKENAER referred to them spe- 
cies, which belong to the genus Dictyna, and consequently to another fa- 
1) BLAckw., Spid. of Gr. Brit., I, p. 171. 
