Chap, iv.] LAND PLANARIANS. 77 



hotels, including a Swiss one, and a German one with a Kegel- 

 bahn, and where dinner is served in regular German style. 

 There are large numbers of Germans in Bahia, and a great 

 part of the trade is in their hands. 



There are public gardens in Bahia, and a theatre, and at 

 certain seasons an opera troupe comes from Rio de Janeiro to 

 perform. At the distance of a mile or two from the town, 

 where the country tramway ends, the roads degenerate at once 

 into mere green lanes, and lead between a succession of small 

 mud-built cottages, each with its fenced garden, and numerous 

 intervals of neglected land, often planted with coffee bushes 

 but overgrown with weeds. 



The principal features of the vegetation are made up of 

 banana plants and large mango and Jack-fruit trees. The 

 Jack-fruit is a huge sort of bread-fruit, as large as a man's 

 head, and grows on a large tree with dark green laurel- 

 like foliage. These three trees are no more indigenous than 

 are the people with whose well-being they are so closely bound 

 up, but are of Asiatic origin, as the people are of European and 

 African extraction. 



At a short distance from the town the country is covered 

 with a thick wild growth, but with numerous scattered cottages. 

 The inhabitants of these are mostly black, but there are many 

 whites among them, and white and black children are to be 

 seen playing together on almost every doorstep. 



I frequently visited these suburbs to search for land planarian 

 worms,* which I found resting beneath the sheathing leaf 

 stalks of the banana plants, just as I had found them in Ceylon, 

 and accompanied, curiously enough, as in Ceylon, by a peculiar 

 slug ( Vaginulus). 



A butterfly which makes a clicking sound whilst flying, a fact 

 first observed by Darwin, is common near Bahia.t I only 

 heard the sound when pairs were flying together in courtship. 

 I do not know whether the butterfly in question at Bahia is 

 Fapilio fero7iia, the species which Darwin met with at Rio de 

 Janeiro. It has, however, the peculiar drum with a spiral 

 diaphragm with it at the base of its wings, as described by 

 Doubleday. This organ of sound is large and conspicuous. 



I made an excursion with one of the sub-lieutenants about 20 

 miles inland, along the railway intended to reach Pernambuco, 

 but at the time of our visit completed only for about 60 miles 

 to the Rio Francisco. Free passes were given by the railway 



* See H. N. Moseley. "Notes on the Structure of several Forms of 

 Land Planarians." Quart. Journ. Micro. Sci., Vol. XVII., New Ser., 

 p. 273. 



f C. Darwin, "Journal of Rcscarclies, " p. '},}). 



