200 Transactions of the Society. 



Tegeoceanus labyrinthicus. 



mjmph, PI. IV. Fig. 10. 



(Perfect creature, vol. ii., PI. XL Fig. 2.) 

 Colour very nearly white, slightly brownish about the rostrum 

 and legs, skin semitransparent and granular, but the granulations 

 very fine and difficult to see ; in general effect it is a fat-looking 

 little creature, something like an inflated bladder. On examination 

 it is seen that the cephalothorax is divided from the abdomen by a 

 large raised fold, which forms the anterior margin of the latter, 

 and the cephalothorax itself has a depressed margin, whence it 

 rises in an arched central elevation, rounded anteriorly, and marked 

 with one or two obscure folds ; another small fold gives a truncated 

 appearance at the junction with the rostrum, which is depressed, 

 and has the 'filiform palpi very plainly visible from above lying 

 along the sides of the labium. The stigmatic hairs are long 

 and filiform, and appear as though inserted under the fold of the 

 abdomen ; the hairs of the vertex are set rather far forward, and 

 are also long and filiform, but not nearly so long as those of the 

 stigmata ; there are a pair of short hairs near the point of the 

 rostrum. The legs are short and thick, diminishing gradually to 

 the point of the tarsus ; each tarsus of the front pair bears the usual 

 long hair at its proximal end, but it is not so long as in most other 

 species, and is absent from the other legs. 



The abdomen is shghtly rounded anteriorly, and obtusely pointed 

 posteriorly ; it is much arched, but has an irregular, somewhat tri- 

 angular depression at each side, commencing near the anterior 

 margin, and extending about half-way back on the dorsal surface, 

 but coming to a rounded point as it approaches the ventral ; this 

 depression is not bordered by angles anywhere, but looks more like 

 the sinking in of a viscid material. There are four pairs of longish 

 hairs round the hind margin, two or three pairs on the back, and 

 two pairs of much shorter curved ones at the sides. 



I have found it in short moss growing on walls, &c., and in 

 lichen. 



Hermannia bistriatus. Nic. 



Nymph, PI. V. Fig. 2. 



This nymph is described and figured by Koch as a separate 

 species under the name of Nothrus i^alliatus, fasc. 30, pi. 4. 



The perfect creature is figured and described by Nicolet, page 

 457, and called Nothrus histriatus, because he supposed it to be the 

 same as Koch's Nothrus histriatus, fasc. 29, pi. 21, in which I am 

 unable to agree with him. Nicolet states the species to be the 

 nymph of Nothrus palustris ; in this, as before explained, Nicolet 

 seems to me to be in error. As Koch's name has priority, and I do 



