TWO RARE SPECIES OF WOODLICE 69 



ON THE OCCURRENCE IN SCOTLAND OF TWO 

 RARE SPECIES OF WOODLICE. 



By Walter E. Collinge, D.Sc, F.L.S., Carnegie Fellow, and 

 Research Fellow of the University of St Andrews. 



THE two species of Woodlice here recorded have only once 

 previously been found in Scotland. 



Armadillidinm nasatum, Budde-Lund. This interesting 

 species was described by Budde-Lund 1 in 1885, and was first 

 recorded as a British species by Stebbing 2 in 1895 fr m 

 Leigh Woods, near Clifton, and Tunbridge Wells. Patience 

 has recorded it from Lanarkshire. It is easily distinguished 

 from all other British members of the genus, by the 

 prominent median lobe of the cephalon, which is a con- 

 spicuous quadrangular body, bent upwards distally. Further, 

 the telson is about as long as it is broad, with concave lateral 

 margins, and obtusely rounded posteriorly. 



The specimens now recorded were obtained by Miss 

 H. B. Barclay in one of the greenhouses in the University 

 Botanical Gardens, St Andrews. In the south of England it 

 is found in the open country, but all, I believe, of the more 

 northern records are of specimens found in greenhouses and 

 conservatories. 



Trichoniscus spinosus, Patience. This beautiful little 

 species was described by Patience in this journal in 1907. 3 

 It was discovered in the early part of that year in a green- 

 house in Springburn Public Park, Glasgow. Mr Patience 

 remarks upon the fact that he had not found it in the open 

 country, but he thought it might be discovered in quite open 

 situations. 



Since that date nothing has been heard of the species. 

 Many thousands of specimens of different species of 

 Trichoniscus, from various Scotch localities, have passed 



1 Crust, hop. Terr., 1885, p. 51. ,-C. 



2 Ann. Mag. Nat. Hist., 1895 (s.b.), xv., p. 23. 



3 Ann. Scot. Nat. Hist, 1907, p. 85, pi. iii. 



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