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Show 1888.] ON THE GULAR POUCH OF RHINODERMA DARWINI. 231 Fam. GALLERID.E. 93. NEPHOPTERYX, sp. 1 94. AURANA, sp. Very close to A. actiosella, Walker, from Ceylon. EXPLANATION OF PLATE XIII. Fig. 1. Heteropan dolens, n. sp., p. 220. 2. Hypsa woodfordi, n. sp., p. 221. 3, 4. Steiria variabilis, Moore, vars., p. 223. 5. Grammodes alcyona, n. sp., p. 225. fi» 8>7, 2 • Thalassodes timoclea, n. sp., p. 227. 8, 8 • Acidalia cernea, n. sp., p. 227. 9. Micronia hermma, n. sp., p. 227. 10. Larentia bosora, n. sp., p. 228. 2. Notes on the Gnlar Brood-pouch of Rhinoderma darwini. By G. B. H O W E S , F.Z.S., F.L.S., Assist. Prof, of Zoology, Normal Sch. of Science and R. Sch. of Mines, S. Kensington. [Received April 17, 1888.] The Chilian Batrachian Rhinoderma darwini was among the most interesting finds of the voyage of the 'Beagle,' and its special interest lay in the fact that it was originally thought by Gay l to have been viviparous. Jiminez de la Espada disproved this in 1872, and brought to light2 the remarkable fact that the gular sac of the male becomes greatly enlarged and modified, to form a brood-pouch, within which the larval metamorphoses of the young are undergone. The specimen which furnished the subject-matter for these notes came into m y hands quite recently3, in the course of an inquiry into the skeleton of the Anura4. Finding that I was able to supplement the descriptions of Espada, and seeing that his paper was published without illustration, I thought it desirable to seize the opportunity of putting on record drawings of so rare an object. The specimen itself differs in no important external character from those hitherto described. It measures from snout to vent 30 mm., that being the length given by Espada ; the length of the outstretched hind limb is 62 mm., and the greatest transverse diameter of the trunk 18 mm.5 The cutaneous lobes of the fore limb (' epaulettes ') 1 Compt. Eend. vol. ii. p. 322 (1835). a Anales d. 1. Soc. Esp. d. hist. nat. Madrid, vol. i. pp. 139-151 (1872). German abstract by Spengel, Zeitsch. wiss. Zool. vol. xxix. pp. 495-501 (1877). 3 Among some material generously placed at m y disposal by m y master, Prof. Huxley. 4 See P. Z.S. 1888, p. 141. 5 For good fig. see Gay, Hist, de Chile, Atlas, pi. 7, Erpetologia. |
