Horváth Géza (szerk.): A Magyar Természettudományi Múzeum évkönyve 2. (Budapest 1904)

Méhely, L.: Investigations on Paraguayan Batrachians

INVESTIGATIONS ON PARAGUAYAN BATRACHIANS. ál 5 band extends from the tip of the snout through the e}

Te to the arm, enclosing the nostril and surrounding the upper part of the tympanum ; upper lip broadly edged with a dark brown band, which is punctulated with dirty-white ; between this marginal and the canthal band runs a greyish-white stripe to the arm. Tympanum chestnut-brown, bordered in front with a short crescent-shaped white line and with a longer one behind; the former isolate, the latter connected with the white stripe of the jaw,* quite as on Leptodactylus mystacinus BURM. Limbs with narrow, not sharply pronounced cross-bars. Immediately above the analcleft stands a white linear spot in the centre of a more or less distinct rhomboidal white marking, from the outer corner of which a longitudinal white stripe or a punctulated white row, bordered above and below with black, extends along the hinder side of the thighs.** Lower surface light brownish-white, immaculate; lower lip and sides of the throat to the arm marbled with brown. The male has the same colour and markings as the female, with that difference that the upper surface of the head and the back between the inner lateral folds are uniform rose-coloured, through which colour the dark marking between the eyes is shining. The lateral lines and spots are rather indistinct. Limbs narrowly cross bared, its brown ground-colour covered with a faint rosatre breath. Beneath uniform yellowish-white ; lower lip greyish margined. This species is very closely allied to Leptodactylus my niacin us BURM., from which it differs by the slender form, longer and narrower head, more acuminate snout, broader interobital space, longer hind limbs, more pronounced tubercles of the sole, the elevated middle line and more distinct tarsal fold, the two black, above white-edged glandular folds on each side of the body and the white longitudinal stripe of the thighs. It could be assumed that the above described two specimen^ of Leptodactylus mystaceus SPIX represents only the young state of Leptoductylus mystuciuu* BURM. and that the formerly described male of the latter species differs only for that reason, because it stands on the top of its breeding season, to which time the lymphducts are quite filled out, so that the glandular folds of the flanks, the fine taisal fold, the elevated middle line of the back and more or less also the plantar tubercles have disappeared. But the mentioned differences are much to great as that they could be regarded as characters of the young age and seems to be quite sufficient to determine a distinct species. * All this markings are sharply pronounced on SPIX'S type. ** Already SPIX remarks: «stria» supra et ad latera ani albicantes.»