REPORT OF THE DIRECTOR I919 95 



had lived where it was buried, in the Silurian sea which deposited 

 the Kokomo limestone at approximately Bertie time, and was hardly 

 carried any great distance out to sea, as some would have us believe. 



7 Note on Caryocaris Salter 



The genus Caryocaris was erected by Salter (1863, p. 135) for a 

 small crustacean from the Skiddaw slate series of Wales. His 

 monotype C . w r i gih t i i is described as follows : "A long, pod- 

 shaped, bivalved carapace (with distinct hinge-pits), rounded 

 anteriorly, subtruncate behind, and with the back and front sub- 

 parallel. The surface is smooth, or with only oblique wrinkles near 

 the margins, but with no parallel lines of sculpture. Body? Telson 

 and appendages ? " The little crustacean is described with the Skid- 

 daw graptolites and stated to occur " everywhere in the Skiddaw 

 slate district." 



In 1876 a second species was described by Hicks as C . m a r r i i 

 (1876, p. 138). This form, which is associated with the genotype, 

 is said to be smaller, being both shorter and narrower. 



The genus is noted again in the first part of the British Palaeozoic 

 Phyllopods by Jones and Woodward (1888, p. 5), where in the 

 table of the known genera of fossil Phyllocarida, it is placed near 

 Ceratiocaris and the carapace characterized as " podlike ; elongate, 

 narrow, smooth," and the genus as occurring in the Arenig and 

 Lingula flags. 



In the second part of this important monograph, both C . 

 w r i g h t i i and C . m a r r i i are elaborately described and figured, 

 and a third form, which had been made known by M'Coy as 

 Hymenocaris Salter i from the graptolite shales of Australia 

 is also, with doubt, referred to Caryocaris, as Salter had done 

 already in 1863 when he saw the specimen. 



Of all these species only the carapaces are described. These alone 

 were known to Salter who, however, in a restoration suggested " a 

 strong, tapering telson (or last body-segment), carrying a sharply 

 lanceolate style and stylet" (see text figure 36). Professor Marr 

 found in association with Caryocaris some small slender spines or 

 pointed styles which are longer than Salter's ideal figure (Jones 

 and Woodward, p. 89) and Professor Malaise loaned the authors 

 of the monograph a specimen from the graptolite shale at Gemboux, 

 Belgium, that shows " three definite sharp daggerlike stylets as the 

 cercopods of this genus " (see text figure 37). 



