Geological Society. 219 
with slightly curved end. About each group of spines are 
massed thirty to thirty-five small round spinnerets, A number 
of short spines are scattered over the dorsal and ventral surfaces 
of the derm. 
Hab. Ypirauga, State of 8. Paulo. On the twigs of 
Campomanesia sp., a bush common on the “ campos.” 
Genus PsrupDOKERMES, CkIl. 
Pseudokermes nitens, Ckll. 
Male scale small, elliptical, convex, white, thin and very 
frail. The dorsum and margin are ornamented with several 
small tubercles. ‘The posterior end is recurved and carries on 
the dorsal surface a small flat round plate, which is pushed 
off when the male emerges. Length 1:25 millim.; width 
‘50 millim. - 
Adult male dimorphous, some individuals being winged, 
others wingless. The body is dark brown, oval, widest 
across the thorax, truncated behind. Total length 1:041 
millim., width 416 millim. Length of genital spike -312 
millim. The winged form emerges about a week or ten days 
after the other. The antenne are hairy and of ten joints, the 
last joint terminatel by two long knobbed hairs. Wings 
ordinary ; no halteres were found. Head small, with four 
ocelli. Genital spike broad and flat, obtusely pointed. Legs 
long, slender, and hairy. Claw long and slightly notched. 
The four digitules are slender and knobbed; the tarsal 
digitules do not extend to the tip of claw. In the wingless 
form the antenne are 9-jointed, otherwise the two forms 
agree. 
Hab. Rio Grande do Sul and 8. Paulo. On the twigs of 
Myrtus (Blepharocalyx) Tweediit, Psidium sp., and other 
plants. 
(To be continued. } 
PROCEEDINGS OF LEARNED SOCIETIES, 
GEOLOGICAL SOCIETY. 
June 20th, 1900.—J. J. H. Teall, Esq., M.A., F.R.S., 
President, in the Chair. 
The following communications were read :— 
1. ‘On the Skeleton of a Theriodont Reptile from the Baviaans 
River (Cape Colony).’ By Prof. H. G. Seeley, F.R.S., F.LS., 
V.P.G.S. 
The fossil described in this paper was discovered by Mr. W. Pringle 
at Haldon, in the bed of the Baviaans River, a tributary of the Great 
Fish River. It is now preserved in the Albany Museum. The slab 
containing it is of hard siliceous sandstone, and is 31 inches long by 
