v CRUSTACEA LITERATURE 411 



known Ericliihoid larva) partly to disappear in the 2d period and finally to re- 

 appear in their definitive form. The developmental history of the Loricata shows 

 .similar phenomena. The first attempt, later frustrated, to form all or most of the 

 typical Malacostracan extremities, which we here observe is no doubt to be 

 ascribed to the force of heredity. The temporary disappearance of some of the 

 extremities is most probably a phenomenon of adaptation to the special conditions of 

 existence of the larva, so different from those of the adult. If, however, these first 

 fruitless and useless attempts were in the'course of time to become gradually weaker, 

 and finally entirely cease, then we should meet in the Loricata and Stomatopoda with 

 phenomena quite similar to those in the Brachyuran development, where the 

 formation of the last 5 thoracic segments, and their extremities occurs so extra- 

 ordinarily late. In this way, also perhaps we can explain the fact that the 

 Brachyuran ambulatory feet appear in their definitive form and not as biramose 

 feet. 



Review of the most important Literature. 



Especially recommended as an introduction to the study of the Crustacea. 



T. H. Huxley. The Cray-fish: An introihn-tion to the study of Zoology ("Inter- 

 national Scientific Series," 1884). 



Comprehensive or more general works. 



J. E. V. Boas. Studien iiber die Ferwandtschqftsbeziehungen dcr Malacostraken, in 



Gcrjtnlinirs Jlorphol. Jahrbuch. 8 Bd. 1883. 

 Justus Carriere. Die Sehorgane dcr Thicrc, vcrgleichend-anatomisch dargestellt. 



Miinchen und Leipzig. 1885. 

 C. Claus. Untcrsuchungen zur Erforschung dcr gencalogischen Grundlage dcs 



Crustaceen-systems. Ein Scitragzur Dcsccndcnzkhrc. "\Vien, 1876. Important. 

 The same. Neue Beitrdge zur Morphologic dcr Crustaceen, in Arb. atts dcm ZooL 



Institute zu Wicn. 6 Bd. 1886. 

 J. Dana. Crustacea of U. S. exploring i-spcdition under Capt. Charles Wilkcs. 2 



vols. with Atlas. Philadelphia, 1 852. 

 H. Gerstaecker. Arthropodcn in Bronn's Klasscn und Ordnungcn dcs Thicrreichs. 



5 Bd. I. Abth. First half 1866-1879. Second half not yet completed. 

 A. Grenacher. Untcrsuchungen ubcr das Schorgan dcr Arthropoden. Gb'ttingen, 



1879. 

 Carl Grobben. Die Antcnnendrilse der Crustaceen. Arb. aus </ m ZooL Institute zu 



Wicn. 3 Bd. 1880. 

 Milne Edwards. Histoirc naturcllc des Crustace's. Paris, 1834-18-40. Vol. III. 



with Atlas. 

 Fritz Miiller. Fiir Darwin. Leipzig, 1864. 



Anatomy of single divisions. 



G. Bellonci. Sistema ncrvoso e organi dci sensi dello Sphaeroma serratum, in 



Mcniorie Accad. Lincei. Vol. X. 1881. 

 Carl Claus. Neue Bcobachtungcn iiber Cypridinen. Zeitschrift f. wiss. Zoologic. 



23 Bd. 

 The same. Zur anatomic und Enticickclimgsgcschichte dcr Copcpoden, in Archie, f. 



Naturgeschichte. 24 Jahrg. 1 Bd. 1858. 

 The same. Beitrage zur Kmnfnix* dcr Entoinostrakcn (Copcpoden, Estherien). 



Marburg, 1860. 



