ARACHNIDA. 147 
A. Oculi medii seriei antic® a margine clypei spatio remoti quod dia- 
metriim oculonim non -vel paullo tantum superat. 
1. Mamill® siiperiores reliquis saltern dimidio longiores. 
1. Aulonia (Koch). 
2. Maraill® siiperiores reliquis vix vel non longiores. 
a. Series oculorum antica paullo brevior quam media; area ocu- 
lorum ®que saltern longa atque lata ; facies alta. 
* Facies subquadrata, versus mandibulas non vel parum latior, 
lateribus rectis 2. Lycosa (Lat.). 
t Facies versus mandibulas multo latior, lateribus fortiter 
convexis 3. Tarmlula (Sund.)» 
h. Series oculorum antica pleriimque paullo longior, saltern non 
brevior quam media; area oculorum plerumque latior quam 
longior ; facies humilis. 
' * Oculi medii seriei antic® majores, vix vel non minores quam 
oculi seriei postic® ; cephalothorax plerumque densius ap- 
^ presso-pubescens 4. Trochosa (Koch). 
t Oculi medii seriei antic® parvi, evidenter minores quam oculi 
seriei postic® ; cephalothorax parce pubescens. 
■ 6. Virata (Sund.). 
B. Oculi medii seriei antic® a margine clypei spatio remoti, quod di- 
ametro oculorum maximorum duplo saltern majus est. 
1. Oculi 4 seriei antic® sub®quales ; pedes robustiores. 
6. Dolomedes (Lat.). 
2. Oculi 2 laterales seriei antic® evidenter majores quam medii 
ejusdem seriei; pedes graciles 7. Ocyale (Sav. & Aud.). 
[II. Series oculorum antica ex duobus tantum oculis constans ; oculi la- 
terales seriei medi® ab oculis 2 seriei postic® longe disjuncti. 
8. Ctenus (Walck.).j 
The Oxyopoidce include only 2 genera, namely : — 
1. Pencetia, g. n. (^ = Pasithea, Blackw.) : oculi in series 3, sectorem circiili 
fere formantes, ordinati. 
2. Oxyopcs (Lat.) : oculi in series 4 ordinati. 
The type of Aulonia is lAjcosa alhimana (Walck.); the typo oi I/ycosa is 
L. luyuhris (Walck.)— s?7mco/a (Sund.)=:a/acr?s (Koch) ; Tarentula has L. 
ajmlioi (Walck.) for its type ; Trochosa has A. ruricola (De G.) as its type, 
and includes T. intricaria (Koch), also Ltjc. leopardus (Sund.) and the rest of 
Koch’s genus Arctosa ; I*irata { = Potamia, Ohl.) has for its type A.piraticus . 
(Cl.), and includes P. uliginosus (Thor.); Dolomedes is typically represented 
by A.Jimhriatus (Cl.) ; the type of Ocyale is A. mirahilis (Cl.) ; the type of 
Ctenus is C. duhius (Walck.). Peucetitty substituted for Pasithea (the latter 
name being preoccupied) has P. viridis (Blackw.) = 0;r. littoralis (Sim.) as its 
type; and Oxyopes has O. variegatus (Lat.). The Brazilian genus Idiops 
(Perty), combined with Oxyopes by Walckenaer, probably belongs to the 
Mygalid®. 
Ilersilia. Lucas (Rev. et Mag. Zool. 18G9, p. 166) states that the species 
of this genus may be divided into two groups, in the first of which, including 
H. caudata (Sav.), JI. savignyt (Luc.), H. indica (Jjac.') y H. edwardsii(Luci)y 
and a new species, the third pair of spinners are very long and the third pair 
of legs very short, whilst in the second, which includes only H. oraniensis 
