340 



Report of the State Geologist. 



Merostomata. 



En rypteridce. 



Eurypterus giganteus, Pohlman. 

 Eurypterus lacustris, Hall. 

 Eurypterus lacustris var. robustus, Hall. 

 Eurypterus remipes, DeKay. 

 Eurypterus pachychirus, Hall. 

 Eurypterus DeKayi, Hall. 



Eurypterus (Dolichopterus) macrochirus, Hall. 

 Eurypterus (Eusarcus) grandis, Grote and Pitt, 

 Eurypterus (Eusarcus) seorpionis, Grote and Pitt. 



Pterygotidce. 



Pterygotus Buftaloensis, Pohlman. 

 Pterygotus Cummingsi, Grote and Pitt, 

 Pterygotus bilobus,- Huxley and Salter. 

 Pterygotus globicaudatus, Pohlman. 

 Pterygotus micropthalmus, Hall. 

 Pterygotus cpiadraticaudatus, Pohlman. 

 Pterygotus acuticaudatus, Pohlman. 



Since the lastnamed species was described, several specimens of it in 

 a good state of preservation have been obtained, showing almost the entire 

 animal. One in the museum collection shows all but the posterior end of the 

 body with two-thirds of the tail. One set of antennae is preserved, and also 

 portions of the swimming feet. This specimen is only a foot in length, but 

 was probably a young animal. 



Phyllocarida. 



Ceratiocaridce. 



Ceratiocaris grandis, Pohlman (specimen nine and one-half inches wide 



by five and one-quarter inches long). 

 Ceratiocaris acuminata, Hall. 



Since the description of the last named species in the Bulletin of the 

 Buffalo Society of Natural Sciences, vol. 5, a specimen has been found and is 

 now in Mr. Mixer's possession, which shows the shape of the carapace very 



