On the Palceozoic Bivalved Entomostraca. 317 



XXXVII. — Notes on the Palceozoic Bivalved Entomostraca.— 

 No. XXIX. On some Devonian Entomides*. By Prof. T. 

 KuPERT Jones, F.E.S., F.G.S. 



[Plate Xl.t] 



Introduction. 



Since the publication of the paper (in 1879 X) on the Devo- 

 nian Entomicles (the so-called " Cypridinen ") of Germany, 

 these little fossils have been frequently noticed by observers 

 and writers, and their true generic position has been generally 

 accepted. The lists of synonyms for the species here noticed 

 will supply the more important references. 



A very extensive series of specimens has been obtained of 

 three species by Mr. W. A. E. Ussher, F.G.S., in Devon- 

 shire ; and from among them a selection has been made for 

 illustration (see PI. XI. figs. 1-4). 



A very interesting species from the Eifel district has been 

 described by Mr. J. M. Clarke, of Albany, New York, under 

 the appropriate name of Entomis variostriata ; and he has 

 kindly sent me some examples to examine and illustrate (see 

 figs. 5-8 in the same Plate). 



Entomis serratostriata. — At page 516 of the 'Versteiner- 

 ungen rhein. Schicht.-Syst. Nassau,' by G. and Fr. v. 

 Sandberger, 1850-56, it is stated that Oypridiyia serrato- 

 striata^ Sand., had been met with at Petherwin, in Cornwall. 

 In his Presidential Address for 1857 General Portlock 

 expressed his doubts as to " Cypridina serratostriata " 

 having been found at South Petherwin, in Cornwall, or in 

 the corresponding beds of the Pilton group in North Devon ; 

 and stated that " Mr. Godwin-Austen informs me that he saw 

 it, in company with Mr. F. Roemer §, in beds which he con- 

 siders higher in the series " (Quart. Journ. Geol. Soc. 

 vol. xiii. p. Ixxxix). 



In Dr. Bigsby's ' Thesaurus Devonico-Carboniferus,' 1878, 



* No. XXVIII. appeared in the Ann. & Mag. Nat. Hist, for October 

 1889. 



t Tills Plate has been drawn with the aid of a grant from the 

 Royal Society for the illustration of the fossil Ostracoda, 



X Ann. & Mag. Nat. Hist. ser. 5, vol. iv. pp. 182-187, pi. xi. 



§ Dr. Ferd. Roemer tells me (in letter of September 30, 1889) that 

 this was his late brother Fr. Adolph Roemer, of Clausthal ; also incor- 

 rectly referred to as " Ferd. Roemer," Ann. & Mag. Nat. Hist. ser. 4, 

 vol. xi. (1873), p. 414. 



