TYPE 0RU8TACBA. 427 



V. Eensen. Studien uber das Oehororgan der Deeapoden. Zeitschr. fttr 



■wissensch. Zool., xiii, 1863. 

 C. Grobben. Beitrdge zur Kenntniss der mannlichen Oeschlechtsorgane der 



Beoapoden. Arbeiten a. d. Zoolog. Inst. Wien, i, 1878. 

 T. H. Huxley. The Grayjish. London and New York, 1881. 

 W. K. Srooks. Lucifer: a Study in Morphology. Philosoph. Trans. Royal 



Soc. London, CLxxni, 1883. 

 H. Seichenbach. Studien zur Entwicklungsgesehichte des Flusskrebses. Ab- 



handl. Senckenburg. Gesellsch. Frankfurt, xiv., 1886. 

 W. F. B. Weldon. Cmlom and Nephridia of Palmmon serratus. Journal 



Marine Biolog. Assoc, i, 1889. 

 G. H. Parker. The Histology and Beuelopment of tlie Eye in the Lobster. 



Bulletin Museum Comp. Zoolog., xx, 1890. 

 P. Marchal. Becherches anatomiques et physiologiques sur I'appareil excreteur 



des Grustaces decapodes. Archives de Zool. exper. et gen., 3me ser., x, 



1893. 

 W. K. Brooks and F. H. Herrick. Tlie Embryology and Metamorphosis of the 



Macroura. Proc. U. S. National Acad., v, 1892. 

 E. J. Allen. Nephridia and Body-cavity of some Becapod Crustacea. Quarterly 



Journ. Microscop. Science, xxxit, 1893. 



AKTHROSTKACA. 



0. Harger. Report on tlie Marine Isopoda of New England and Adjacent 



Waters. Report of the U. S. Commissioner of Fish and Fisheries for 



1878. 

 A. Delia Valle. Oammarini del Qolfo diNapoli. Fauna und Flora des Golfes 



von Neapel. Monogr., xx, 1893. 

 P.Mayer. Caprelliden. Fauna und Flora des Golfes von Neapel. Monogr., 



Ti and XVI, 1883, 1890. 

 0. Nebeski. Beitrdge zur Kenntniss der Amphipoden der Adria. Arbeiten a. 



d. Zoolog. lust. Wien, iii, 1890. 

 E. Kossmann. Studien Uber Bopyriden. Zeitschr. fllr wissensch. Zoologie, 



XXXV, 1881 ; Mitth. a. d. Zoolog. Station zu Neapel, iii, 1883. 

 Yves Selage. Gontrihution d I'etude de I'appareil circulatoire des Grustaces 



edriophthalmes m^rins. Archives de zool. exper. et gen., ix, 1881. 



APPENDIX TO THE TYPE CRUSTACEA. 



Order Xiphosura. 



The Xiphosura is a group which possesses many Crus- 

 tacean peculiarities, and also many foreign to that group and 

 more especially characteristic of the Arachnida ; consequently 

 it is advisable to consider it as an order by itself, intermediate 

 between the two types. 



A single genus, Limulus (Fig. 195), with few species consti- 

 tutes the order, the members of which are popularly known 



