154 



jNIr. J. W. Salter un new Fossil Crustacea 



by me iu the communication above referred to, which is correct 

 so far as it goes, but now requires additions. 



In the second edition of ' Siluria/ 1 859, a supposed correction 

 was pubhshed by me with respect to the position of the carapace. 

 No specimens had till then been found that had the body-rings 

 actually in connexion with it; but the occurrence of a third speci- 

 men (fig. 3.) with all the pai'ts in situ, has shown more clearly 

 that the position of the abdomen given in ' Silui'ia ' was not the 

 true onCj but that it had been (singularly enough, in both cases) 

 forced forwards, so as to protrude from the anterior end ! Figure 3 

 only has the parts in right position, and all three figures belong 

 to the same species — Ceratiocaris papilio. 



Fig. 1. \ Fig. 2. Fig. 3. 



Ceratiocaris papilio, Salter*. 



The three figures show the animal in various postures in the stone ; — 

 Fig. 1 . The valves closed, but with the abdomen bent round and jjrotruding 



from the front of the carapace. 

 Fig. 2. A speriraen similarly distorted, with the valves open. The dotted 



Hnes show the ])ropcr ])Osition in both figures. 

 Fig. .'i. shows all the parts in situ, with the jaws, e ; rostrum,/; anti-una; 



(or thor.ieic appt lulages?), (7 ; o, b, thora.x and abdomen; c, telson ; 



f/, caudid appendages." 



* yee ' Siluria,' 2nd ed. p. 2fi2, f. 1, 2. 



