26 T. THORELL, 
but 115 species, BLACKWALL has described 144 species of the same family 
or rather sub-order — 145, if we consider Scytodes as belonging to the The- 
vidiide WESTR. It is the genera Linyphia and Erigone alone (comprehending 
together 112 species in BLACKWALL and but 83 in WESTRING) that deter- 
mine that family’s great preponderance in the British compared with the 
Scandinavian fauna. On the other hand ZLycosidæ and Attide are far more 
numerous here than within the boundaries of Britain, the first of these fa- 
milies showing 35 to 20, the latter 31 to 18 species; of the genus Lycosa 
WESTRING takes up double as many (32) species as BLACKWALL, of Attus 
nearly double (30 to 16). 
The families Zpeiride, Drasside and Thomiside of WESTRING are 
about equally numerously represented in both countries. As regards his Dras- 
side (Tubitelarie NOB.) it should however be observed that, whereas the 
genuine Drassidæ (Drassoide NOB.) are far more numerous in our country 
(41 to 29 species — Sparassus being referred to the Thomisoide, Agreca, 
Argyroneta and the Ciniflonide BLACKW. to the Agalenoide —), the number of 
species of the Dysderoide and Agalenoide is not so great in the Scandina- 
vian peninsula as in Great Britain and Ireland (the respective proportions being 
3 to 7 and 17 to 22). 
Among the forms described by BLACKWALL, we find several belong- 
ing also to the southern and middle parts of the European continent, which 
are entirely absent here: such for ex. are Uloborus Walckenaerii LATR. ( Ve- 
leda lineata BLACKW.), Scytodes thoracica, Segestria florentina, Dysdera 
punctoria, Coelotes sawatilis, Eresus cinnaberinus and typus piceus. Besides 
Uloborus, Scytodes, Cœlotes, Eresus and Atypus, the genera Oonops and 
Schenobates of the family Dysderoidæ, (each of one species), are entirely 
unrepresented in the Scandinavian peninsula, whereas again — since Æyptiotes 
(Mithras) paradoaus has been found in England’), and if we have been 
right in referring BLACKWALL’s Agelena gracilipes and celans to Apostenus 
WESTR. — all the genera that occur in our country have their representatives 
in the fauna of Great Britain and Ireland. 
Among the species common throughout a great part of Sweden, but 
which seem to be absent in Great Britain and Ireland, we mention (by the 
names given them in WESTRING's work) the following: Zilla montana, The- 
ridium castaneum, albo-maculatum, Melanophora nocturna, Philodromus mar- 
garitatus, formicinus, Lycosa nemoralis, monticola, tarsalis, lignaria, paludi- 
cola, teniata, cuneata, Attus hastatus, medius, V-insignitus and arcuatus. 
1) BLACKWALL, Notice of the capture of Mithras paradoxus in England. 
