INVESTIGATIONS ON PARAGUAYAN BATRACHIANS. 215 
blackish-brown bands, on which ly black edged insnliform spots, covering 
the glands. Between the eyes a saddle- or W-shaped spot, commencing as 
a narrow stripe from the outer edge of the upper eyelid, widening and 
sometimes broken on the middle of the head. Behind the upper eyelid a 
cresentic or irregular spot. Two undulated bands issue from the scapular 
region, extending to thigs, pass over to the posterior half of the lumbar 
gland and spring over to the thighs and tibiæ when the limbs are folded 
against the body. These undulated bands confluent in the middle line of 
the back on three points, viz. on the scapular region, the middle of the 
back and the sacral region, forming together a more or less distinct 
8-form, with a distinct greyish-white spot in its anterior ring and a more 
unregular one in the larger posterior ring. From the hinder edge of this 
8-form, which may be broken into more or less pieces in a different way, 
runs a dark branch over the posterior half of the lumbar gland, where 
it is nearly black and shows a large spot like an black eye, as on Eupem- 
phix Natter eri Stdr, (pl, XIII, fig. 8\ Above the coccyx a short white 
stripe, on each side of which a dark-brown roundish spot, finely edged 
with white. Upper side of snout a triangular bright field, more or less 
marbled with dark ; sides of the head before, below and behind the eye 
with dark-brown, oblique (nearly vertical) bars ; behind the axilla a dark- 
brown triangular blotch on the flank near to groin, with its tip directed 
backwards. Limbs cross barred, the bar in the middle of the thighs and 
tibiæ broadest; between the bars run narrow dark lines. Lower surface 
white ; throat mottled with brown. 
Teeth. An exact investigation states very minute teeth, adherent 
with the inner surface of the maxilla, although the tips of teeth scarcely 
exceed the edge of the maxillary bone. 
The sternal apparatus is quite the same as in Paludicola signi¬ 
fera Gir, or Eupemphix Natter eri Stdr., namely the omosternum forms 
a semiossified style with a slight cartilaginous dilatation on its end and 
the sternum consists in a bifid bony style (pl. XIII, fig. 7 a\ 
each of its branches furnished with a separate cartilagi¬ 
nous plate (pl. XIII. fig. 7 b). 
Paludicola fuscomaculata Stdr. is the next relation of Paludicola 
albifrons Spix, but the latter species — as I see on the type-specimens, 
received for investigation from the Museum of München — is smaller 
(25—28 mm. from snout to vent), with sligthly more pointed snout, lon¬ 
ger hind limbs (the tibio-tarsal articulation reaches the posterior corner 
or the centre of the eye), having the tubercle on the middle of the tarsus 
more developed and a second tarsal tubercle, close to the tibio- 
tarsal articulation, bluntly subconical, larger than the first and also 
