ON EUROPEAN SPIDERS. 121 
b. Mamillæ longæ, superiores inter se valde remote, cum in- 
ferioribus in lineam transversam reeurvam dispositæ, et iis 
fere dimidio longiores. Series oculorum anticorum sub-recta 
VE OWNED 3 olus 8 6 6 o o 5o So Gh JUD 
B. Oculi nulli. Mamillæ superiores valde longs, articulo 21 «que fere 
[one MALU Ms e rey acters cans ER RENE EME 4716 
** Mamille superiores inferioribus non vel parum longiores, in ipso apice 
tantum tubulis textoriis preedite. 
1. Mamille superiores articulis distinctis binis. Ungues tarsorum bini. 
0. d ob MION OE ome di ose URSS ER . 15. Agreca. 
2. Mamille superiores articulo 2° exserto nullo. Ungues tarsorum trini. 
6. Cybeus. 
* . . . . . . . . . . E . . . . . . 
- SS Pone plicam genitalem alia plica, stigmata trachealia duo in medio ejus sita 
continens, ad basin ventris adest. Pedes posteriores preesertim subtus (et in 
lateribus) pilis longis natatoriis vestiti. . . . . . . Ill. ARGYRONETINE. 
1. Mamillæ superiores et inferiores eadem fere longitudine, articulo 21° brevi. 
Series oculorum antica fere recta, postica desuper visa paullo recurva. 
16. Argyroneta. 
Dolomedes agalenoides WALCK. !) probably forms a separate genus of 
this family. Apostenus WESTR., the species of which BLACKWALL ?) appears 
to refer to Agalena, and which genus also AUSSERER ?) reckons to that fa- 
mily, we aggregate to the Drassoide, as also Anyphena SUND., which by 
C. KocH had been united with the Agalenoidee *). 
Sub-fam. I. AMAUROBIINÆ. 
This sub-family corresponds to BLACKWALL’S Ciniflonidæ, when we 
detach therefrom the genera, which belong to other sub-orders, and agree 
with Amaurobius or Cinilo BLACKW. only in having an infra-mammillary 
organ and calamistrum >). AUSSERER places these spiders, as also we do, 
1) Hist. Nat. d. Ins. Apt., II, p. 454. 2) Spid. of Gr. Brit., I, p. 151—162. 
3) Die Arachn. Tirols, I, p. 151. 4) Uebers. d. Arachn.-Syst., 5, p. 26. 
5) In MENwGE's Preuss. Spinn., Abth. III, which I received after the five first 
sheets of the present work were printed, several important observations on the 
infra-mammillary and the respiratory organs of spiders are communicated. MENGE 
thinks (loc. cit. p. 244) that the infra-mammillary-organ answers to the small coni- 
cal process (colulus MENGE), which in other spiders is seen immediately under or 
in front of the spinners, and that both may be considered as a separate termi- 
nal part (hypopygium) of the coalesced abdominal segments (?). In at least one spe- 
cies of the genus Dictyna, D. albo-maculata MENGE, two tracheal tubes have their 
Nova Acta Reg. Soc. Sc. Ups. Ser. III. 16 
