234 PROCEEDINGS OE SOCIETIES. 



the memory of being once over them is not pleasant. At the farthest 

 end of the long cave we discovered a species of the same group as the 

 one just mentioned, but one that was a true denizen of darkness, and a 

 veritable inhabitant of these caves. This was a Lipura, somewhat larger 

 than L. fimetaria, which abounded on the surface of some little pools 

 formed by the drippings from the roof collected in hollows of the bot- 

 tom. They clustered especially on floating lumps of soft calcareous 

 concretions, and were also abundant on the moist rocks of the sides of 

 the caves, especially about some dusky stains of the encrusted rock. 

 The surface of these stains was scraped, but after being dried the matter 

 appeared to consist chiefly of fine earth, with a smaller proportion of 

 vegetable granular matter, apparently the first stage of some algoid 

 growth, presenting no filaments or other trace of regular organization. 



This Lipura is almost identical with the species which Schiodte 

 found in the Adelsberg Grotto on clumps, especially of Byssus fulvus, L. 

 (Azonium fulvum). There are, however, some points in which his de- 

 scription does not exactly agree with the specimens from the Mitchels- 

 town Caves, and, as mentioned before, different caverns in the Carniola 

 and Hungarian series afford distinct species of such coleopterous genera, 

 as Anophthalmus, Leptodirus, and Adelops; so it is by no means im- 

 probable that the only known inhabitant of our caves may be peculiar 

 to our own country. 



The true specific distinctions, however, in this long neglected group 

 of insects, are scarcely so well understood as to induce us to propose a 

 new specific name for it on the ground of the apparent difference be- 

 tween our Lipura and Schiodte' s. I now give Schiodte' s brief descrip- 

 tion of his Anurophorus stillicidii, and of the circumstances under which 

 he found it. 



"In the clumps of Byssus fulvus, which grow in the interior space 

 of the Adelsberg Grotto, I found a remarkable new species of the order 

 Thysanura. It is snow-white (Plate XYIIL, Fig. 2, a), of pretty consi- 

 derable size, and by the absence of a coat of scales, by the rudimentary 

 leaping apparatus, and the structure of the antennae and limbs, as well 

 as by the number and position of the eyes, is allied to the genus Anuro- 

 phorus of Mcolet. The Grotto species is distinguished very strikingly 

 from the few others of this genus that are known, by the antennae, which 

 are longer than the head, as well as by the longer and more slender legs, 

 but especially by the structure of the thoracic segments, which are di- 

 vided into two parts of unequal dimensions.* The eyes are extremely 

 difficult to discover ; and it was not until after many vain endeavours 

 that I succeeded in ascertaining the presence of them, their number, 

 form, and position, by means of a Lieberkiihn's speculum and a strong 

 reflected lamp- light. They are snow-white (see Plate XYIIL, Fig. 2, d), 

 fourteen on each side, and disposed nearly as in Anurophorus fimetarius. 

 — (Nicolet, 'Recherches, pour servir a l'Histoire des Podurelles,' 



* Vide " Transactions of the Royal Danish Society of Science," as before. 



