172 CALIFORNIA ACADEMY OF SCIENCES. 



Types of Carboniferous Xiphosura new to 



North America. 



In Am. Naturalist, vol. 19, 1885, p. 291. 



Dipe.Uls n. g. Be2inurus lacoei n. ^y>. Euroops longispina n. %t^. Cyclus 

 americaniiff u. sp. Dipeltis diplodiscus u. sp. 



The Syncarida, a group of Carboniferous 



Crustacea. 



In Am. Naturalist, vol. 19, 1885, p. 700. 

 Accmihotelsoii. 



On the Gampsonychidce, an undescribed family 



of fossil Schizopod Crustacea. 



In Am. Naturalist, vol. 19, 1885, p. 790; Mem. Natl. Acad. Sci., vol. 3, 

 1886, p. 129, pi. 3. 



Palcifocaris typus M. & W. Gampsonyx fimbrlatus J. «fe vou M. 



On the Anthracoridce , a family of Carboniferous 



Macrurous Decapod Crustacea allied to the Eryonidw. 



In Am. Naturalist, vol. 19, 1885, p. 880; Mem. Natl. Acad. Sci., vol. 3, 

 1886, p. 135, pi. 4. 

 Anthrapalaon gracilis M. & W., A. grossarti Salt. 



Discovery of the thoraic feet in a Carboniferous 



Phyllocaridan . 



In Am. Philos. Soc, vol. 23, 1886, p. 380, pi. 

 Cryptozoe u. g., C. problematints u. sp. 



On the class Podostoinata, a group embracing 



the Merostomata and Trilobites. 



In Am. Naturalist, vol. 20, 1886, p. 1060. 

 Merostomata: Xiphosura, Synziphosura, Eurypteridck. 



On the Syncarida, a hitherto undescribed 



synthetic group of extinct Malacostracous Crustacea. 



In Mem. Natl. Acad. Sci., vol. 3, pt. 2, 1886, p. 123, pis. 1, 2. 

 Acanthotelson stimpsoni "M. & W., A. magister Pack. 



On the Gmwpsonychida' , an undescribed family 



of fossil Schizopod Crustacea. 



In Mem. Natl. Acad. Sci., vol. 3, pt. 2, 1886, p. 129, 1 pi. 

 Gam])sonyxfimbriatus J. & von M. Pahtocaris typus M. & W. 



