THK HKOOKLVN INSTITUTK OK ARTS AND SCII'.NCKS 
BROOKLYN MUSEUM 
s c I ]<: N c K B u iv r^ K T I N 
VOL. 3, NO. 2 
SOUTH AMERICAN ARACHNIDA, CHIEFLY FROM THE 
GUANO ISLANDS OF PERU. 
By Raij'h V. Chamberlin. 
Most of the Arachnids listed in this i)aper were collected by Dr. R()]:)ert 
Cushraan Murph}-, of the Brooklyn Museum, on the guano islands off 
the coast of Peru, on dates from Oct., 1919 to Jan., 1920, specimens 
being secured on Chincha, Mazorca, and Lobos de Tierra islands. FVom 
the first mentioned islands there are represented Hadniroides liinatus 
(L. Koch), Chinchippus penivianus, sp. nov., Dysdera murphy i, sp. nov. 
Tetrag)iatha aptans, sp. nov. Tetragnatha sp., and Ornithodoros 
ainbhis, sp. nov. On Mazorca Id. were .secured the types of the interest- 
ing new attid s])ider, Sitticns niazonaniis. On Lobos de Tierra Id. were 
taken specimens of Hadniroides lunatus (L. Koch), Loxosaies ncsop/iila. 
sp. nov., and Ornithodoros tulaje (Guerin-Meneville). An immature tick 
was taken from a bat on Asia Id. 
In addition to these s])ecies, occasion is taken to include descrij^tions 
of a new scorpion from Quito, Ecuador, and a new s])ider from Huad- 
t[uina, Peru, noted in the course of the work on the material collected 
on the islands. 
SCORPIONIDA. 
VEJOVIDAE. 
Hadrukoidks lunatus (L. Koch). 
Telegoiifs liDiatns L. Koch, Verb, zool.-bot. Ges. Wien, 1867, 17 
P- 235- 
Numerous specimens of this species were taken both on Chincha Is. 
and Lobos de Tierra Id. It is otherwise known to occur from Valparaiso 
in Chile northward through Bolivia and Peru to Ecuador. Dr. Murphy 
notes that on Chincha Is. these scorpions were found chiefly under the 
carcasses of dead birds. 
