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Show 610 MR. G. A. BOULENGER ON THE [Nov. 17, greyish-brown spots, which are scarcer on the lower crest; usually a few deep black spots on the upper edge of the upper crest. The largest specimen obtained by me in Brittany measures 59 millim.: body 18, width of body 12; tail 41, depth of tail 15. The first description and figure of this tadpole were published by Lataste (Actes Soc. Linn. Bord. xxx. 1876, p. 430, pi. x. figs. 7-9). A better figure was given by Heron Royer (Bull. Soc. Zool. France, 1878, pi. iii. fig. I). Further descriptions have since been given by Heron Royer and Van Bambeke (I. c. p. 255, pi. xvii. fig. 1) and by Bedriaga (Bull. Soc. Nat. Mosc. 1889, p. 330). Rana agilis is now known to inhabit France, from as far north as St. Malo and Paris to the foot of the Pyrenees and the Mediterranean coast, a few localities in Western Germany (Strassburg, Linz on the Rhine, Wiirzburg), Switzerland, Italy and Sicily, Dalmatia, Austria as far north as Prague, Transylvania, Greece, and the Talysh district in Asia\ It breeds a little later than R. temporaria, usually, in France, between the middle of February and the beginning of April, but occasionally as late as M a y (Heron Royer, Bull. Soc. Et. Sc. Angers, xiv. 1884, p. 125), and the young usually leave the water by the end of June or beginning of July. However, this summer, near Dinard, I captured larvae in which the fore limbs had not yet appeared as late as the lOfch August. It is one of these specimens which I have figured on Plate X L V . fig. 7. 8. HYLA ARBOREA, L. (Plate XLVI. figs. 1-3.) Length of body once and one third to once and a half its width, about half the length of the tail. Nostrils a little nearer the eyes than to the end of the snout. Eyes perfectly lateral, visible from above and from below, a little nearer the spiraculum than to the end of the snout; the distance between the eyes once and a half to twice as great as the distance between the nostrils, which equals the width of the mouth. Spiraculum on the left side, directed upwards and backwards, nearer the posterior than the anterior extremity of the body, not very prominent, but visible from above and from below. Anus opening on the right side, close to the body, above the lower edge of the tail. Tail once and three fourths to twice and one third the length of the body, twice to twice and a half as long as deep, 1 A species closely resembling B. agilis, but the male of which is provided with internal vocal sacs, inhabits China and Japan. The British Museum has recently received several tadpoles of this species, Bana japonica, Blgr., obtained in the end of M a y of this year by M r . Hoist on Tsu-Shima, islands between Southern Japan and Corea. These tadpoles agree with those of B. agilis in their labial dentition, forming 7 series, the first lower series being about half as long as the second ; all four lower series uninterrupted. Beak broadly edged with black, without tubercle. Mouth a little wider than the distance between the nostrils, which equals three fifths the width of the interocular space. Lines of muciferous crypts indistinct. Tail twice to twice and one fourth the length of the body, ending in an obtuse point, its depth three to three and a half times in its length. Caudal crests whitish, with small brown spots. Total length 39 millim. |