8 The Zoologist — January, 1866. 



beginning of two impressed lines running the whole length of the body. Antennae 

 approximate at the base, very stout, the joints obconic, shining pale luteous, with a 

 ferruginous caste, obtuse, sparsely clothed with pale yellow pubescence, twice the 

 length of the head, and tapering very gradually from the base upwards. Labium eraar- 

 ginate, with two black obtuse teeth, the colour of the teeth forming two lines coalescing 

 at about the middle and continuing to the base. A strong ridge marks the line of 

 junction of the labium and ihe base of the mandibles; at the apex of this ridge is a 

 black spot on each side. Mandibles strongly curved, the apical half jet-black, the 

 basal ferruginous-yellow, with three strong oblique folds: the mandibles and the 

 labium very finely punctured, with a few coarser impressions. Body compressed, dark 

 ferruginous, gradually tapering toward the tail. Legs pale yellow, with ferruginous 

 claws; vary in number in both sexes, from forty-eight to fifty pairs; two impressed 

 lines run the whole length of the body above, very distinct anteriorly, but growing 

 somewhat indistinct posteriorly. Anal styles pale yellow, with a ferruginous cast, 

 slender in the female, but stout iu the male, compressed laterally, the three basal ones 

 obconic, the apical one acute. Length of male 11 J- lines; of female 1^ inch. 

 This species appears to be a curious compound of two genera and species, namely, 

 Arthronomalus longicornis of Newport and Geophilus sublerraneus of Shaw, it having 

 the elongated head of the former and the antennae (only stouter) of the latter ; it also 

 has the anal styles very much like the former; the number of legs agrees very nearly 

 with the former species. Mr. Newport says of his species, of which I have a specimen, 

 "Labia elongalo medio inconspicue sulcato lavi punclis raris.;" but in mine it is 

 thickly punctured. Mr. Newport also says, "This myriapod varies in having the 

 cephalic segment and the antennae a little shorter and less hairy than others." Even 

 making allowance for this variation I cannot think it could reach such an extreme as 

 is exhibited here in this species. When in London, in May last, I examined the 

 British Museum Collection with my friend Mr. F. Smith, but could find nothing there 

 like it. Found beneath the bark of an old elm near Exeter, in April, 1865. — Edward 

 ParfiU. 



Note on the Field Mouse (Mus sylvalicus). — We have heard so much lately about 

 " cave men," that perhaps you will spare me a corner to say a few words about cave 

 mice. Wandering through the woods here, a few days ago, I came upon a little cave 

 or recess among the rocky precipices which border the southern bank of the Wharfe: 

 the floor presented a singular spectacle, being thickly strewn with the wings of Noctuae, 

 belonging to hundreds of individuals. In one corner was a spider's web, from which 

 large numbers of wings were suspended. At first I thought the moths had takea 

 refuge in the cave, and suffered death at the hands of the owner of the web; but a 

 closer inspection showed that this was not the explanation, as I could not find a single 

 thorax or abdomen either on the floor or in the web, and the wings were invariably 

 disunited, which would not have been the case had the moths voluntarily entered the 

 cave and become entangled in the web. It was also improbable that so large a number 

 of Noctuae had sought one place of refuge, and several of the species of which I found 

 remains were not likely to have so concealed themselves at all. How, then, came they 

 into the cave? Not brought in by birds or bats, I think, or I should have found other 

 traces of their presence, which I was unable to do. Mice only being left as the pro- 

 bable agents, I set a trap in the cave, and next luoruiug found my suspicion confirmed 



