8 RESEARCH IN CHINA. 
specimens studied by Lorenz. ‘These did not include the types of Liostracus 
latus, Shantungia buchruckeri, Obolella gracilis, or the specimens referred to 
Drepanura and Teinistion. I have had three of the specimens photographed 
(plate 7, fig. 1a; plate 20, fig. 8; plate 22, figs. 2, 2a, 2b), so that more direct 
comparison may be made. The original of Shantungia monkei Lorenz is too 
unsatisfactory to photograph. 
The student of the Cambrian formations and faunas of China should 
consult the fine memoir of Dr. Eduard von Toll, 1899, on the Siberian Cam- 
brian. It has many suggestions that the future student of the Cambrian 
system in Asia should carefully consider. One of them is that a great and 
important work awaits the investigator of the Cambrian formations of Siberia. 
The field is a large one and what we now know of it indicates a rich reward 
to the individual who takes the time to thoroughly work out the formations 
and their contained faunas. 
Mr. F. R. Cowper Reed, in discussing the pre-Carboniferous life prov- 
inces of Asia, points out that the Cambrian fauna of Spiti in northern India 
has a stronger affinity with that of western North America than with any 
other Cambrian fauna’ [Reed, 1910]. The bearings of this are not enlarged 
upon further than to indicate a connection between the Himalayan region 
and North America during Middle Cambrian time. 

‘Record s Geol. Surv. India, vol. xL, plate 1, 1910, p. 10. 
