180 THE entomologist's record. 



nest five hours later, I found all the Platyarthri dead and outside the 

 nest. 



All the Platijart/rri in a nest of M. scabrinodis were found outside 

 the nest dead, many being in a mangled condition, on December 14th, 

 1899, after a sharp frost. Those in the other nests exposed to the 

 same conditions, lived all through the winter. 



In March, 1900, I saw a Lasius umhratns attempt to seize a Plafy- 

 arthrus in her mandibles. It was one of those belonging to the nest. 

 Some specimens introduced in February, 1903, from a nest of L. 

 flavus into one of L. niger, were attacked at first, but not for long. I 

 then put some into a nest of F'ormica sanguinea, but these ants took 

 no notice of them whatever. 



On May 19th, 1908, I put five Platyarthri from a nest of M. scabri- 

 nodis into a nest of L. fiavus. The ants attacked them, and the 

 Platyarthri seemed reluctant to enter the nest, even when no ants 

 stopped them. On returning a few hours later, 1 found three outside 

 the nest, the other two not being visible. I put these three into the 

 nest several times, but they came out again of their own accord each 

 time, though the ants no longer took any notice of them. The next 

 day they were still outside. I put one into a nest of M. ruginodis. It 

 remained motionless while two workers examined it, and then left the 

 nest. 



Two Platyarthri from one nest of L. niger were put into another 

 nest of the same species on May 9th, 1909, and were both attacked, 

 one being carried some distance. The following day I saw an ant 

 carry a dead Platyarthrus out of the nest. 



The last case recorded was in November, 1909, when some 

 Platyarthri were introduced from a nest of L. flavus into another nest of 

 L. fiavas and a nest of L. 7iiger respectively. One was attacked for a 

 moment by a L. flams, but those put into the nest of L. niger were 

 unmolested. 



As a general rule I found L. flavus receive Platyarthri from nests 

 of its own species, and from nests of L. niger and others, without 

 taking any notice of them. 



These small blind woodlice pass their whole existence in ants' 

 nests, and when about to moult or produce offspring, are found in 

 small cells of earth made in the walls of the nest, where they remain 

 for some time, finally breaking their way out. I have never seen the 

 Platyarthri actually constructing these cells, though I have seen the 

 ants carefully plastering earth round them. In one case the ants 

 buried the Platyarthrus so deep that I doubt whether it could ever 

 have broken out without assistance. Two or three young ones are 

 sometimes left by the parent sealed up in an earthen chamber after 

 she has herself left it. On one occasion recently, I observed two 

 fighting, butting one another with their heads, till the arrival of an 

 ant separated them. 



Notes on the Lepidoptera of the Scottish Highlands. 



By DOEOTHY J. JACKSON. 



I am able this year to add a good many species to the list published 

 at intervals in the Ent. Record, vol. xxi., and, as many of them 

 seem to be unrecorded from such northern localities, perhaps the 



