130 Scientific Intelligence. 



common to the two periods, although before the book appeared 

 it was believed that at least two Devonian forms continued to 

 live into Kinderhook times. Many genera are, however, common 

 to the two periods, and this is especially true for the Upper 

 Devonian and the Kinderhook. The following Devonian genera 

 practically die out in the Kinderhook : Lepto3?ia, Productella, 

 Centronella, Atrypa, and Nucleospira. 



The work is illustrated by a wealth of photographs in half- 

 tone, and should make the work of future workers easier and 

 more secure. The State of Illinois is to be congratulated on 

 publishing this fine paleontologic monograph, and the thanks of 

 all invertebrate paleontologists are due Professor Weller for this 

 helpful addition to their working libraries. c. s. 



3. The Anticosti Island faunas ; by W. H. Twenhofel. 

 Geol. Surv. Canada, Museum Bulletin No. 3, 1914, pp. 39, 1 pi. — 

 There is no more interesting Paleozoic locality, nor one with a 

 richer fauna, than the island of Anticosti in the Gulf of St. 

 Lawrence. The fauna was first, made known by Richardson, 

 Logan, and Billings, and in 1910 the section was modernized by 

 Schuchert and Twenhofel. The sequence begins in the earliest 

 Richmond and continues unbroken into the Silurian (Rochester). 

 In this paper the author lists the fauna according to formations, 

 so far as developed, and describes the new genera (Paleofavo sites 

 Strophoprio?i, Virgiana, Protozeuga, Lissatrypa) and a few of 

 the more striking new and old species. Among these may be noted 

 the oldest Chonetes ( C. primigenius), found in the Richmond 

 series ; Anabaia anticostiana Clarke, which is the same as 

 Rhynchonella eva Billings, and both are synonymous with 

 P. decemplicata Sowerby, one of the common Silurian shells of 

 Europe ; and Protozeuga anticostiana, the oldest known tere- 

 bratulid, also occurring in the Richmond along with spire-bearing 

 Hyattidina charletona, n. sp. Triplecia ortoni is found to be 

 closely related to the European T. insularis Davidson. 



It is now evident that the Silurian fauna had its origin in 

 Charleton and Ellis Bay time of the Richmond series of the 

 Cincinnati system, and that the North Atlantic is the realm in 

 which originated the Tabulata, Tetracoralla, and the spire- and 

 loop-bearing brachiopods. c. s. 



4. The British Carboniferous Producti. I. Genera Pustula 

 and Overtonia ; by Ivor Thomas. Mem. Geol. Surv. Great 

 Britain, Palaeontology, vol. I, part iv, pp. 197-366, pis. xvii-xx, 

 text figs. 1-10, 1914. — In this work the Producti are reinvestigated 

 by Doctor Thomas, at great length from their historical, morpho- 

 logical and evolutionary aspects. The author is a very careful and 

 detailed worker and correctly regards Productus as a poly- 

 phyletic genus requiring division into several genera. The genus 

 sensu stricto is based upon P. productus (Martin), a form that is 

 costate throughout all stages of growth and has but few spines. 

 The following are new genera : Avonia, having for its genotype 

 P. youngianus Davidson, and including forms that are spinose in 



