On EUROPEAN SPIDERS. 29 
shorter legs ?). Even in BLACKWALL’s works the mischievous consequences 
of the artificial, even if in other respects convenient, system by him adop- 
ted are clearly visible: Segestria and Dysdera are widely separated from 
the Drasside, their nearest relations, and placed next to Scytodes, the 
natural place of which is surely in the neighbourhood of Pholcus, and which 
is more nearly related to BLACKWALLS Theridüde, than to any other of 
his families. — BLACKWALL appears to us also to lay too much weight upon 
an organ which he considers as a 4" pair of spimers grown together, and 
on the rows of curved hairs or bristles on the metatarsi of the posterior 
legs, which he calls calamistrum: on the always contemporaneous presence 
of these organs be has based his family Ciniflonide, in which he brings to- 
gether forms so widely separated as e. g. Amaurobius (Ciniflo BLACKW.) 
and Uloborus (Weleda BLACKW.), the former of which genera is usually 
aggregated to the Tubitelæ of LATREILLE and the latter to his Orbitele. 
The genera Æresus and Dinopis, which also, as L. KocH has shown ?), 
have the "calamistrum" and the above mentioned organ situated immediately 
under or in front of the spinners (and which we on aecount of its situation 
call the infra-mammillary organ), ?) must thus also be referred to the family 
Ciniflonide, which accordingly is made to contain a heterogeneous mixture 
of species belonging to the most widely separated families 5). However 
important these characters may be — and we believe that we attribute to 
1) Also among the Theraphosoidæ (Mygalidæ) forms occur with only 6 eyes, e. 
g. the genus Pelecodon DoLESCHALL (Tweede Bijdr. t. d. Kenn. d. Arachn. v. d. Ind. 
Areh., p. 5) and Mygale (Cteniza) hexops WHITE (Descr. of appar. new spec. of Apt. 
fr. New Zeal.,p. 3). Among the Thomisoidæ the Th. yolophus DouMERC has six eyes: 
among the Retitelarie (Incquitelo) not only Spermophora, but also Sicarius WALCK. 
or Thomisoides NICOLET (if this genus really belong to that sub-order and not, as is 
more probable, to the Thomisoidæ) has also only six eyes. KEMPELEN has lately 
(Verhandl. d. zool.-bot. Vereins in Wien, XVII) described under the name of Thysa 
pythonisseformis a six-eyed spider from Hungary, which seems to be nearly connected 
with the genus Gnaphosa (Pythonissa €. KocH) belonging to the real Drassoide. 
2) Die Arachn.-fam. d. Drassiden, p. 1; Beschr. n. Arachn. u. Myriap., im Ver- 
handl. d. zool.bot. Gesellsch. in Wien, XVII (1867), p. 231. 
3) L. Koen (Die Arachn.-gatt. Amaurobius, Cœlotes u. Cybæus, p. 1) provi- 
sionally calls this organ cribellum, because he finds that it has some likeness to a 
sieve ("Sieb"). The name "Sieb", colatorium, has been previously employed by MENGE 
for the surface of the last joint of the spinners where the spinning-tubes are situated: 
see MENGE, Preuss. Spinnen, p. 27. 
4) BLACKWALL now also includes the Æresus among the Ciniflonidæ: see BLackw., 
A List of Spid. eapt. in the south east reg. of equat. Africa, p. 454. 
