TEGEOORANUS CEPHEIPORMIS. 845 



which they respectively spring and point outward and 

 backward. One of these projections, with its leaf-Hke 

 process, is figured in Plate XXVI, fig. 11. Near 

 the middle of the anterior margin of the abdomen, 

 and of each cast-skin, is a pair of strong spines, 

 slightly spinulated, bearing very narrow membranes, 

 and springing from small trifid projections ; between 

 these and the antero -lateral projection on the same 

 side, is a very small bifid projection bearing a rough, 

 slightly leaf-like spine pointing inward and forward. 

 The genital and anal plates are small and elliptical ; 

 the whole ventral surface corrugated and dotted. 



Distribution. — The species as yet has, I believe, only 

 been found at three places in England, viz. the New 

 Forest, Gomshall in Surrey, and near Stone in Stafford- 

 shire ; but, doubtless, it might be found elsewhere by 

 proper search. It was recorded first by Nicolet in 

 France, and the nymph was first found by Herr S. A. 

 Poppe near Bremen ; he however did not succeed in 

 tracing what species it belonged to ; and this was not 

 ascertained until I found the species at Gomshall and 

 succeeded in dissecting the imago fully formed out 

 of the body of the inert nymph. I have since bred it 

 frequently. Both nymph and adult inhabit fir-trees, 

 and are found among the fallen needles and on the 

 bark, particularly fallen bark. The adult may be 

 beaten off the trees ; it is not uncommon at the New 

 Forest, but seems to be capriciously distributed there, 

 being very local. 



Professor Berlese, in his ' Acari, &c., Italiani,' fasc. 

 xxxiii (October, 1886), has figured and described what 

 he calls Tegeocranus cepheiformis, Nic. The description 

 would not, I think, be sufficient to enable anyone to 

 distinguish between two or three allied species, but 

 the plate is certainly not drawn from T. cepheiformis. 

 It may possibly be drawn from T. latus, Koch, but the 

 sharp anterior angles of the lamellae which he draws 

 are not found in either species, and the markings on 



