330 



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 antennae 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 antennae, 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 Mans. They were generally much 

 covered with particles of fibre, and were sluggish in their 

 movements. 



