34 F. R. Cowper Reed—Recent Work on Bokkeveld Fossils. 
late been drawn to the Trias by a committee of the British Association, 
this preliminary sketch of the results already obtained may be of some 
service. 
My thanks are due to many friends, but especially to the quarry 
owners for very active help, to Mr. Arber for the identification of 
Triassic plants of which very little is known in this country, and to 
Dr. Smith Woodward for examining the vertebrate remains. 
TX.—Nortes on some Recent Work on THE BoKKEVELD Fossits. 
By F. R. Coweser Resp, M.A., F.G.S. 
N a recent important article in the ‘‘ Records of the Albany Museum, 
South Africa,” vol. i, No. vi (1906), pp. 847-404, pls. vi-x, 
Professor Schwarz describes some interesting fresh material from the 
Kokkeveld Beds, and is able to add several new species to the steadily 
erowing list. Incidentally he is led to criticise some previous work 
done by me on the Brachiopoda and Mollusca from the same beds. 
Whilst I welcome the new hght he is able to throw on several of the 
obscure fossils with which I had to deal, I must demur to some of his 
conclusions, especially in the case of the Brachiopoda; and accordingly, 
as my opinion on his paper has been specially asked by other workers 
on this fauna, a few remarks appear to be requisite. It must not be 
forgotten that the specimens in all cases are poor and unsatisfactory, but 
Professor Schwarz has had the advantage over me of more abundant 
material. 
1. With regard to his new species Rensseleria relicta (op. cit., 
p. 364, pl. vii, fig. 7), it is considered by Professor Schwarz to be 
perhaps identical with my Sensseleria sp. a (Ann. S. Afr. Mus., 
vol. iv, pt. 8, p. 176, pl. xxi, fig. 8). Without seeing his type it is 
naturally impossible for me to form a definite opinion, but his view 
seems to possess much probability, though my doubts as to the generic 
position of this shell have been recently expressed in my description 
of Scaphiocelia(?) africana (Guot. Mac., Dec. V, Vol. III (1906), 
p. 308). Better material will probably remove the existing un- 
certainty as to its specific and generic relations. 
2. The ribbing in Lensseleria hottentot, Schwarz (op. cit., p. 365, 
pl. vu, fig. 8), as described and figured, does not suggest the genus 
Rensseleria, but rather the genus Rhynchospira, and the same remar 
applies to his Zrigerta simplex (pl. vii, fig. 9), which I cannot agree 
is probably identical with my TZ?rgeria aff. Gaudryi; the central 
grooved narrow fold or wide rib on the brachial valve, represented in 
Professor Schwarz’s figures and mentioned in his descriptions, seems to 
forbid their reference to Rensseleria or Trigeria; and, as he remarks, 
7. simplex may rather be compared with Hartt’s Retzia jamesiana. 
In placing the latter in the genus Rhynchospira I am merely adopting 
Clarke’s view in the case of the Para examples, for the species has 
also been referred to Wotothyris and Centronella. 
3. Professor Schwarz arrives at somewhat different conclusions . 
with regard to the specific separation of the members of the genus 
Spirifer, but he acknowledges the difficulties with which one has to 
