Pape SAN DIEGO SOCIBTY OF NATURAL TISTORY 
CLARKE (J. M.) and RUEDEMANN (R.)—Continued 
(Onychopterus) Kokomoensis Miller and Gurley. This is subgenus proposed for this 
species. 
The authors classify Eurypterus Boylei Whiteaves under a new subgenus T'ylopterus. 
Eurypterus (Anthraconectes) mazonensis Meek and Worthen. Eusarcus Grote and 
Pitt. Eusarcus scorpionis Grote and Pitt. ‘The authors refer EZ. grandis G. & P. to this 
species. Husarcus newlini Claypole. ‘The authors refer Eurysoma newlini and Carcin- 
osoma newlini Claypole to this species. Eusarcus ? cicerops Clarke, E. ? longiceps nov., 
E, triangulatus nov. Dolichopterus macrochirus Hall, D. frankfortensis noy., D. lati- 
frons nov., D. otisius Clarke, originally described under the genus pterygotus; D. 
siluriceps nov., the Eusarcus scorpionis Pohlman, 1886, D. testudineus noy., D. stylonur- 
oides nov. 
Genus Stylonurus Page. The authors illustrate S. 
elegans Laurie and S, logani Woodward, also S, 
macrophthalmus Laurie, Vhey divided the genus 
into subgenera. 
(A) Stylonurus type S. logani Woodward, ete. 
(B) Ctenopterus type Stylonurus cestrotus Clarke, 
etc. 
(C) ‘Parsopterus type 8. scoticus Woodward. 
Stylonurus (Ctenopterus) excelsior Hall.  ...... 
The author refers Dolichocephala lacoana Clay- 
pole, 1883, and S. lacoanus Beecher, 1900, to this 
species. 
(Drepanopterus) type S. /obatus Laurie. 
Stylonurus limbatus nov., 8S. (Ctenopterus) mul- 
lispinosus noy., S. myops Clarke. Stylonurus beecheri 
Hall, described as Eurypterus beecheri, Hall, 1884; 
S. wrightianus Dawson, described as Equisetides 
wrightiana Dawson, 1881. Subgenus Drepanoplerus 
Laurie. The authors figure D. pentlandicus Laurie, 
D, longigaudatus nov. 
Echinognathus Walcott, E. clevelandi Walcott. 
Megalograptus Miller, M. welchi 8. A. Miller. 
This was described as a Graptolite by Miller, 1874. Stylonurus Logani Woodward 
Family Pterygotidae: 
Genus Hughmilleria Sarle, 1902, H. socialis Sarle and var. robusta, H. magna novy., 
Hf, shawangunk Clarke. 
Pterygotus Agassiz: 
The authors figure a restoration of Stylonurus poweiei and Pterygotus angelicus, fig. 
70. Describe and illustrate Pterygotus macrophthalmus Hall, to which they refer P. 
osborni Hall, P. atlanticus nov., P. buffaloensis, Pohlman emend. ‘The authors refer | 
P, cummingsi Grote and Pitt, 1877, P. acuticaudatus PohIman, 1881, P. guadraticaudatus 
Pohlman, P. macrophthalmus Pohlman, 1881, and P. bilobus (Huxley and Salter) 
Pohlman, 1881, to this species. Pterygotus cobbi Hall, P. (Erettopterus) globiceps nov., 
P. (Erettopterus) gandis Pohlman emend. 
This is the Ceratiocaris grandis Pohlman, 1883, P. monroensis Sarle, P. (Eusarcus) 
nasutus nov., P. prolificus nov. 
Remarks on Beltina danai Walcott. 
The authors are not convinced that the fragments of this genus described are those 
of merostomatus, 
Note on Proscorpius osborni Whitfield. 
