330 ASELLID. 
which is terminated by a flagellum composed apparently 
of three very minute articulations, at the base of which 
arise two delicate, slender filaments or auditory cilia, 
about half the length of the preceding joint. The 
lower antennz are much longer than the entire animal, 
and consist of three small basal joints, followed by two 
long and slender ones, occupying nearly half the length 
of the whole antennz, followed by a long and slender 
multiarticulate flagellum. The first segment of the 
body is nearly as large as each of the three following, 
whilst the three terminal segments gradually decrease in 
width and length, each having the sides produced into 
rounded lobes. The tail is elongate-ovate in form, con- 
stricted at the base, with three strong teeth on each 
side, the last part being affixed in a slight incision on 
each side near the tip, and apparently representing the 
minute caudal appendages. 
The fore legs are short and subchelate, the three follow- 
ing long and slender, whilst the three posterior pairs are 
still longer, all except the anterior pair being terminated 
by two strong curved ungues of unequal size. This 
Species was first named by us Monimia Whitiana, in 
compliment to Mr. Adam White, late of the British 
Museum, and described at the meeting of the British 
Association for 1852, from a specimen obtained at Wey- 
mouth by Professor Williamson; and we have since 
received it from Cumbrae, where it was taken by Mr. 
David Robertson, of Glasgow, amongst the fibres of 
the nest of Lima hians, They were generally much 
covered with particles of fibre, and were sluggish in their 
movements. 
