Ceratiocaris (Limnocaris) salina nov. 



Page 92 



1, 2, 3 Specimens (syntypes) showing the carapace and abdomen 

 with telson. Figure 2 also shows the frontal rostrum ; figure 

 3, the eye tubercle and rostrum. All x 5. 



4 Larger specimen in which the two valves are recognizable, as 



well as the anterior mucro of one of the valves, the rostrum 

 (slightly displaced) and the posterior fringe, x 5. 



5 Well-preserved carapace with anterior mucro, eye tubercle and 



posterior fringe. Nearby is an abdomen, probably belonging 

 to the carapace, x 5. 

 Silurian: Pittsford shale, Pittsford, N. Y. 



Pseudoniscus roosevelti Clarke 

 Page 105 



6 Enrolled specimen, showing eyes, x 2. 



7 Specimen with eyes and suture lines, x 2. 

 Silurian: Pittsford shale, Pittsford, N. Y. 



Pseudoniscus clarkei nov. 

 Page 107 



8 Specimen in which the carapace is slightly contracted longi- 



tudinally. Syntype. x 2. 



9 Type specimen. (Holotype). x 3. 

 Silurian : Bertie waterlime, Litchfield, N. Y. 



Eusarcus trigonus nov. 

 Page in 



10 Holotype. Natural size. 



Silurian: Bertie waterlime, Litchfield, N. Y. 



The originals of this plate are in the New York State Museum. 



214 



