210 THE entomologist's eecobd. 



It seems to have been originally a Paltearctic species, and is to be 

 found on river-banks, and among the shingle oE the coast in southern 

 France, also along the Mediterrenean Sea, in Asia Minor and the 

 Transcaucasus, and again in Korea. It is to be found also in nearly 

 every port in the Avorld, and in South America has developed some 

 remarkable varieties. It varies considerably in size, colour and form, 

 and most forms have been described as separate species. 



Anisolahis maritima, Bon., is a species with similar habits to the 

 last ; it is also probably Pala^arctic in origin, but is now cosmopolitan. 

 Its occurrence in England is purely artificial. It was discovered in 

 numbers nearly fifty years ago, near South Shields, among heaps of 

 refuse consisting chiefly of ballast from ships returning from abroad. 

 It is uncertain how long the species maintained its hold there, and 

 whether it is still in existence there. 



Anisolahis annulipes, Luc, is also cosmopolitan, and tin introduced 

 species with us. TThe genus Anisolahis is represented throughout the 

 world.] 



Lahia viinor, L., is tlie typical species of a large genus with a world- 

 Avide distribution. L. minor is essentially Pala?arctic, and is common 

 throughout Europe. It occurs in Nortli America, but is there an 

 introduced form. 



Ketohia lapponica, L., occurs throughout Europe from the Volga to 

 Lapland. I have taken it in Wallachia, and in the mountains of 

 J3osnia and Hercegovimi . In Lapland it destroys the dried fish of 

 the natives. Witli us it is local but not rare. It is not a native 

 of southern Europe proper except in tlic mountains. It has been 

 taken on Mount Etna. 



Ectohia panzeri, Stephs., is conmion in Belgium, Holland, France 

 and tlie south of England. It is rare in Germany and has been taken 

 sparingly in Dalmatia and I'errol. 



Ectohia liriila, Fabr. — The distribution of this species is similar to 

 that of E. htpponica, but more southern. In the north it is rare, but 

 occurs in Germany. It is common throughout central Europe, and 

 abiindant in the south. 



The genus F.ciohia contains about Jmlf a dozen species ; those 

 which do not occur with us are essentially southern in distribution. A 

 closely allied genus, Aphlehia, contains many more species and is more 

 Avidely distributed. It is not yet knoAvn to be represented in this 

 country, though some of the commoner forms might turn up (f.//., A. 

 ;»rtc'/(/rt^^?, northern France, Belgium, Switzerland, or A. punctata Avith a 

 similar distribution). No other cockroaches are indigenous in this 

 country. 



J]lecostethiis ///■o.vs-z/.s, L.. is the only species of the genus. It is more 

 or less common in the marshes throughout tlie Avhole of northern 

 Europe, as far as Lapland. 



Stenobothrus is a large genus, containing about fifty species, 

 distributed throughout the the Pala?arctic region. No true species of 

 the genus occurs outside its boundaries, though extremely closely 

 allied forms occur in North America. Brunner divides the genus into 

 five groups or subgenera, of Avhich four arc found in Britain. Though 

 it ]nay be sometimes considered hard to distinguish our species, it is far 

 more difficult to (.liscriminate the European fornis, which arc :.o numer- 

 ous, and Avhich come between our familiar species in the system. 



