348 BRITISH OEIBATID^K. 



forming almost a square, and having an oblique ridge 

 running from each posterior angle of the square to the 

 pseudo-stigma on the same side. These ridges un- 

 doubtedly represent the lamellaB and translamella of 

 the adult. From the anterior angles of the square 

 sjjring the lamellar hairs, which are strong serrated 

 spines. Pseudo-stigmata rather dorsal. Pseudo-stig- 

 matic organs longish, with rod-like peduncles and 

 almost fusiform heads. Interlamellar hairs very strong 

 serrated spines. 



Legs short, of about even thickness throughout ; 

 joints rough and irregular in form. Each of the three 

 central joints of the two front pairs of legs bears a 

 whorl of large, serrated, curved spines, those on the 

 outside of the legs being the largest. The two hind 

 pairs of legs bear similar spines, but smaller. Tactile 

 hairs on first pair of legs very long. 



Abdomen elliptical, or almost round; the central 

 part more or less raised. Ventral surface arched, so 

 that the notogaster stands much above the cephalo- 

 thorax. The cast notogastral larval and nymphal skins 

 are carried on the back, where the larval forms a cen- 

 tral shield, and the nymphal concentric rings border- 

 ing it. The larval skin is slightly wrinkled, and bears 

 ten large, deeply-serrated, curved, blunt spines round 

 its edge, directed outward and backward, and five 

 pairs or similar spines forming two longitudinal lines 

 very near together, one on each side of the median 

 line. Round the margin of each nymphal skin are 

 about twenty large, flat, chitinised projections (see PL 

 XXVI, fig. 10), of which two pairs are on the progaster, 

 and one on the antero-lateral angle ; of these three 

 pairs the second is small and scarcely more than bifid, 

 the two others are trifid, like the projections from the 

 nymph of T. latus. In the projections further back, 

 the two lateral lobes, instead of being entire, split 

 dichotomously into two sharp, flat, diverging spikes ; 

 this is hardly indicated in the posterior pair of projec- 

 tions, and the central lobe, just before the insertion of 



