620 MR. G. A. BOULENGER ON THE [NoV. 17, 



confirmed by Bedriaga's observations at Nice, where he has found the 

 frog pairing from the end of February to May, and again in October 

 and November. I have myself this summer, at St. Enogat, observed 

 specimens pairing on the 21st August. Late offspring of course 

 hibernate in the larval condition, as ascertained by Bedriaga (Bull. 

 Soc. Nat. Mosc. 1889, p. 542), who obtained near Nice, on the 10th 

 March, in one and the same pond, full-grown tadpoles, spawn, and 

 breeding individuals. Larvae of Pelodytes may therefore be found 

 all the year round. 



15. DiscOGLOssus piCTUS, Otth. (Plate XLVII. fig. 3.) 



Length of body once and two thirds its width, two thirds to one 

 half the length of the tail. Eyes on the upper surface of the body, 

 the distance between them about once and a half the distance between 

 the nostrils, equal to or slightly less than the width of the mouth. 

 Spiraculum in the mid-ventral line, equally distant from either ex- 

 tremity of the body. Anal opening median, larger than the spi- 

 raculum. Tail three to four times as long as deep, broadly rounded 

 at the end, as in Bufo vulc/aris, both upper and lower crests but 

 vei-y feebly convex, the former not extending upon the back ; the 

 depth of the muscular part at its base one half to two fifths the total 

 depth. 



Mouth elliptical. Beak white, edged with black. Lips bordered 

 by a single series of papillse, which are usually narrowly interrupted 

 in the middle of the upper lip ; a well-marked chink on each side of 

 the lower lip. Series of labial teeth -, occupying the whole width of 

 the lips, the third lower interrupted in the middle ; the first upper 

 and the first lower series formed of one or two rows of teeth, the 

 others constantly of two \ lean distinguish the ordinary hues of 

 crypts on the head, and also one running along each side of the back. 



Brown above, whitish below ; caudal crests whitish, uniform or 

 with small brown dots. The whole body and tail with a network of 

 fine brown lines forming polygonal meshes -, this network most easily 

 traceable on the tail. 



Total length 33 millim. : body 12, width of body?; tail 21, 

 depth of tail 6. 



The tadpole of Discoglossus was first described and figured by 

 Lataste in his " Etude sur le Discoglosse " (Actes Soc. Linn. Bord. 

 xxxiii. 1879, p. 287, pi. v. figs. 1-4) ; .and his account has been 

 supplemented by Heron Royer (Bull. Soc. Zool. France, 1885, 

 p. 565, pi. xiv.), Heron Boyer and Van Bambeke (/. c. p. 280, 

 pi. xxi. fig. 1), and Bediiaga (Bull. Soc. Nat. Mosc. 1889, p. 557). 

 Discoglossus pictus inhabits Spain and Portugal, Corsica, Sardinia, 

 Sicily, Malta, and small neighbouring islands, Morocco, Algeria, and 

 Tunisia. Its breeding-season lasts from February (in Algeria) to 

 the end of summer. 



^ The duplex disposition of these teeth has been overlooked by Heron Eoyer 

 and Van Bambeke, who state that all the teeth form single series. Such is cer- 

 tainly not the case in the specimens examined by me, some of which were 

 named by M. Heron Eoyer himself. 



