624 IVAR TRAGARDH 
The ventral side (fig. 160) and the 
legs are of the typical shape, only the coxe 
I—II are not contiguous as in 5S. longzrostris 
according to v. VITZTHUM (1926, fig. 78, 
p. 130) and, remarkably enough, the number 
of hairs on the coxe is quite different, a 
feature which may possibly be useful for 
taxonomic purposes also in other species. 
Thus coxe I have 5 hairs, coxe II 5 hairs, 
coxe III 7 hairs and coxe IV 3 hairs. 
Loc.: Juan Fernandez, Masatierra. 

27. Anystis baccarum (L.). 
161 162 A cosmopolitan species. 
Figs, 161—162. Scirus longipalpis n.sp. 
161. Mandible. 162. Chela mandibuli, Loc.: Juan Fernandez. I specimen. 
28. Belaustium obtusum pn. sp. — Figs. 163—166. 
If we use the key of the Erythrzide given by v. VITZTHUM (1919), 
which is based on the investigations of OUDEMANS, it is impossible to find a 
place for the present species. This is not surprising, as this key is based only 
on the European species, but it emphazises the urgent need of a thorough in- 
vestigation and revision of all the extra European species, for the purpose of 
taking a complete survey of all the acarina. 
We have to chose between the two genera Lepftus LATREILLE and BLe- 
laustium V. HEYDEN. The former is characterized in the following way (I. c. 
p. 69): »Crista bildet einen medianen Léangsstreifen in einem (schwer wahr- 
nehmbaren) Riickenschild. Vordere Area sensilligera ragt als Nase’ tber das 
vordere Rumpfende hinaus. Augen hinter der Mitte der Crista. Rumpfhaare 
fein, glatt oder wenig behaart » The latter in the following way: »Kein Ruc- 
kenschild um die Crista. Vordere Area sensilligera nicht hervorragend. Augen 
vor der Mitte der Crista. Rumpfhaare dick, stabformig, dicht mit Haaren oder 
Stacheln besetzt. Palptarsus konisch, zylindrisch, meist halbkugelformig der 
Palptibia ventral aufgesetzt». 
The present species agrees in all respects with Lef/uws with one exception, 
which seems important enough. The anterior area sensilligera does not project 
at all like a nose, but the anterior edge is cut off almost squarely, at any rate 
there is no projection, as in Lepzus. 
Furthermore there seems to be two pairs of eyes (fig. 164) although only 
the anterior pair seems to have a distinct lens. This feature it seems, how- 
ever, to share with Belaustium where according to OUDEMANS and V. VITZ- 
THUM (lL. c. fig. 95) there is a similar, rounded naked spot close behind the 
eyes, a little closer to the centre. 
