44 THE BRITISH WOODLICE. 
are explored in which no collecting has been done, we may 
briefly indicate the results which we obtained in the county in 
question. 
It was not long before a species new to Britain—to wit, 
Porcellio vatzeburgiiwas found (74). This discovery was men- 
tioned by Mr. Stebbing in the Victoria County History of Essex 
(p. 71), and he prophesied that most of the British species then 
would be met within thecounty. We may safely claim to have 
shown that his prediction was true, for we have been able to 
record in the preceding pages no less than sixteen other species, 
as will be seen from the following lists :— 
WOODLICE RECORDED FROM ESSEX. 
1. Ligta oceanica 10. Porcellio pictus 
2. Ligtdium hypnorum 11. Porcellio dilatatus 
3. Lrichoniscus pusilius 12. Porcellio laevis 
4. Tvichoniscus voseus 13. Porcellio vatzeburgit 
5. Haplophthalmus danicus 14. Metoponorthus pruinosus 
6. Oniscus asellus 15. Cylisticus convexus 
7. Philoscia muscorum 16. Ayrmadillidium nasatum 
8. Platyarthrus hoffmannsegeu 17. Armadillidium vulgare 
g. Porcellio scaber 
Of these Ligidium hypnorum calls for special mention, as it 
had not been found in this country since Mr. Stebbing discovered 
it in Surrey in 1873. Several of the Porcellios and Cylisticus 
convexus have been met with in but few places, and the same may 
be said of Avmadillidium nasatum. 
Of the British species not as yet found in Essex Tvichoniscus 
vividus has at present only been recorded from Ireland ; Philoscia 
couchit and Aymadillidiwn depressum have not been collected 
except in the extreme south west of England, while 
Metoponorthus cingendus has hitherto only been noticed in 
Devonshire and Ireland. The other four species, with the 
exception of Porcellio rathket, which is well distributed in west 
Middlesex (and might have been expected to occur in Essex), 
are still rare. In fact, for Tvichoniscoides albidus but two British 
localities are known ; for Haplophthalmus mengii three (two in 
England and one in Ireland); while Avmadillidium pulchellum has 
only been recorded from two or three places. 
In other counties quite as satisfactory results were obtained 
as in Essex——a systematic search in Buckinghamshire brought to 
