Reptiles and Batrachians from Ecuador. 457 



of other insects ; and a posterior and larger part, wliich 

 corresponds to the other thoracic ganglia and to some abdo- 

 minal ganglia. The anterior division supplies nerves to 

 the organs of the mouth (like the ganglion infra<jesophageum) 

 and to the first pair of legs. The posterior and larger divi- 

 sion of this ganglion supplies nerves to the second pair of 

 wings, to the thorax, and to different segments of the 

 abdomen. 



3. 'i'lie abdominal division of the nervous system consists 

 of one abdominal ganglion, situated in the last third of the 

 bodj. .It is oval, and is connected with the thoracic ganglion 

 by means of a long and thin cord. From this ganglion spring 

 three pairs of nerves, of which the first and second pairs branch 

 out in the fifth and sixth segments of the abdomen, while the 

 last pair branch out in the last segment of the abdomen and 

 in the rectum. 



This nervous system is as curious as that of some Coleo- 

 ptera* {Bkizotrogus solstttialis, Serica hrunnea) and some 

 Hemiptera [ILjdrometra lacustris), as it has no ganglion in~ 

 fraossojph ageum . 



LIII. — Account of the Reptiles and Batrachians collected hy 

 Mr, Edward Whymper in Ecuador in 1879-80. By G. A. 

 BoULENGERf. 



The collection of Reptiles and Batrachians kindly placed in 

 my hands by Mr. Whymper, though containing no striking- 

 novelties, is interesting on account of the care bestowed by 

 its collector in recording the exact locality from which every 

 specimen was obtained. I will therefore mention all the 

 specimens contained in this collection. Four species appear 

 to be new to science. 



REPTILIA. 

 Chelonia. 



1. Cinosternon, sp. 

 Two very young, dried specimens, the dorsal shield 24 



* Ed. ]irandt, ' Ou the Nervous System of the Lamellicornia,' St. 

 Petersburg, 1878 (in Russian). 



Ed. Brandt, ' Researches into the Comparative Anatomy of the Nei'- 

 vous System of the Hemiptera,' St. Petersburg, 1878 (in Russian). 



t This paper was ready for the press in November 1881 ; but the execu- 

 tion of the woodcuts has delayed its publication. In the meanwhile the 

 descriptions of the new frogs liave been published in the British-Museum 

 ' Catalogue of Batrachia Ecaudata.' 



