36 Reviews — Santo Domingo Fossils. 



In the palaeontological part of the memoir the author gives 

 the distinguishing characters between Dahnanites eucentrus and 

 D. mucronatus, concerning which there has been so much confusion. 

 The former was described by Angelin from the Brachiopodskiffer of 

 llostanga, in Scania, and the same author described the latter from 

 the Brachiopodskiffer of Ostrogothia, where it occurs in beds of a 

 higher horizon than the highest beds of that name in Scania, in 

 rocks which contain a Valentian fauna. These two species have 

 been stated to be identical, and it is satisfactory to have a description 

 of their differences. It must be noted, however, that in Scania the 

 two forms occur in the Ordovician Brachiopodskiffer, though it is 

 doubtful whether D. eucentrus has ever been discovered in strata of 

 Valentian age. 



A new Dahnanites (D. Kiceri) is described from the Norwegian 

 Brachiopodskiffer, and stated "to be allied to D. obtusicaudatus, 

 Salt., from the Upper Caradoc of England". The latter species is 

 really of Lower Ludlow age, and the Norwegian form more closely 

 resembles D. Roberts), described by Dr. Cow per Reed, from the. 

 Ashgillian strata of Haverfordwest (Geol. Mag., Dec. V, Vol. I, 

 p. 106, 1904). 



An English summary of the two parts is given in the concluding 

 portion of the memoir, which is illustrated by many plans and 

 sections, and by two plates of fossils and illustrations of others in 

 the text. 



J". E. M. . 



II. — : Santo Domingo Fossils. 



Santo Domingo Type Sections and Fossils. By Caulotta Joaqutna 



Maury. Bulletins of American Paleontology, 1917, vol. v, 



No. 29, pt. i, Mollusca, pp. 165-415 (1-251), pis. xxix-lxv 



(iii-xxxix); No. 30, pt. ii, Stratigraphy, pp. 416-59 (1-43), with 



sketch-map of expedition, views of country, geological sections, 



correlation table, and 36 plates of molluscan figures. 



TjlHE authoress is already well known to geologists for her memoirs 



X on "Some New Oligocene Shells from Florida" and "The 



Paleontology of Trinidad". She was fortunate in being selected as 



a member of a small expedition to the Island of Santo Domingo, in 



1916, for the furtherance of geological research, which was carried 



out uuder the auspices of the "Sarah Berliner Foundation ". In the 



volume before us comprehensive details are given of the many 



sections visited on that occasion, from which numerous fossils were 



obtained, all having been zonally collected and properly localized. 



These fossils comprised a considerable fauna belonging to several 



groups of the animal kingdom, although the Mollusca form the 



larger series and contained over 300 species, many of them being 



described as new to science. The descriptions of the Mollusca, 



accompanied by more than 500 illustrations, form the first and 



largest part of this work, while the second part relates entirely to 



stratigraphy. The writer refers gratefully to the pioneer work of 



Colonel Heneken, who nearly seventy years ago surveyed the same 



