Rev. A. M. Norman on Ligidium agile. Per soon. 419 



Megalophrys montana and Megalophrys nasuta. 



At tlie time of the publication of the 'Reptiles of British 

 India' (1864) I had seven examples for examination. Three 

 of them were provided with a rostral appendage, and con- 

 sequently belonged to " Ceratojjhrys nasuta of Schlegel ;" they 

 were males. The four others had no such appendage, and 

 proved to he females. In this curious coincidence some excuse 

 maybe found for my drawing the inference that these examples, 

 so extremely similar to one another in other respects, were of 

 the same species, and that the rostral appendage was a secon- 

 dary sexual character peculiar to the male (Rept. B. Ind. 

 p. 413). 



However, in the course of last month the British Museum 

 received three additional examples, every one of which shows 

 that I have fallen into an error. Two of them (larger than 

 any example I had previously seen, the body being 5 inches 

 long), from Matang in Borneo, have a well-developed rostral 

 appendage, but they are females. The other (probably from 

 Java) is a male and lacks the appendage. 



Therefore there can be no further doubt that there exist in 

 reality two species of Megalophrys with a somewhat singular 

 distribution ; for whilst M. nasuta appears to be rather common 

 in Borneo, the Malayan peninsula, and Sumatra, M. montana is 

 limited to Java and Ceylon. 



I regret to have fallen into this error, the more so as Mr. 

 Darwin, whose attention I had directed to Megalophrys^ has 

 referred to these frogs in his 'Descent of Man,' 1871, ii. p. 2Qj 

 and figured the heads of the two species as those of the male 

 and female of the same animal. 



iXLVIII. — Note on the Discovery of Ligidium agile, Persoon 

 ( = Zia Saundersii, Stebbing) , i7i Great Britain. By the 

 Rev. A. M. Norman, M.A. 



The Crustacean which ]Mr. Stebbing has described in the 

 Annals ' for April, p. 286, under the name Zia Saundersii, 

 and which was found by him near Copthorn Common, is a 

 well-known European species, which it is astonishing that 

 Mr. Spence Bate, to whom it would appear that it was sub- 

 mitted, should not have immediately recognized. It is an 

 interesting addition to our Crustacean fauna. 



The Rev. T. R. R. Stebbing quotes the following words from 

 Spence Bate and Westwood's' British Sessile-eyed Crustacea' 



