1 0 Crust. 
OKU STAGE A. 
88. Hf.rrara, A. Apuutes para el Estudio de la Limnadia Jiloinatica . 
Nat. Mex. vii, pp. 156-159. a half plate. 
89. Herrick, F. H. Notes oil the Development of Alplieux and other 
Crustacea , and on the Development of the Compound Eye. J. Hopk. 
Univ. Circ. vi, pp. 42-44, 1 woodcut. 
From these researches it appears that the mesoderm originates at two 
periods, from invaginated epiblast, and, later, from superficial epidermis. 
All parts of the eye, excepting actual nerve tissue, are derived from a 
superficial layer of elongated columnar epiblast, which multiplies into cell 
strings ; each of the latter becomes an optic element, and is not separated 
by an envelope of any kind from the rest. 
90. Hilgendorf, F. Cretacische Squilliden-Larveu vom Libanon. SB. 
nat. Fr, 1885, p. 184. 
91. <} Hoek, P. P. C. Limnoria lignorum. Tijdschr. Nederl. Dierk. Yer. 
(2) i, Versl. pp. cxxvi-cxxx & cxxxviii. 
92. Holder, C. F. Some Peculiar Habits of the Crayfish. Popular 
Science Monthly, October, 1886 ; and Am. Micr. J. vii, p. 210. 
Holl, H. B. [Vide Jones (106) (107).] 
93. Holm, G. Revision der Ostbaltischen Silurischen Trilobiten. Abth. 
ii. Illaeniden. 173 pp., 12 pis. 
Figures and descriptions of 15 new and several old species. 
94. Howell, W. H. Observations on the blood of Limirfus polyphenius , 
Callinectes hastatus , and a Holothuriau. Stud. Biol. Lab. J. Hopkins 
Univ. iii, pp. 267-287. 
A comparison of the behaviour of the blood of Limulus with that of 
the Crustacean does not indicate any relationship between the two 
forms. 
95. Imiiof, 0. E.- Yorliiufige Notizeu ii. d. horizontale u. verticale 
geographischen Yerbreitung d. pelagischen Fauna der Sfisswasser- 
becken. Zool. Anz, ix. pp. 335-338. 
96. . Ueber mikroskopische pelagische Thiere aus der Ostsee. T. c. 
pp. 612-615. 
97. — — . Neue Resultate fiber die pelagische und Tiefsee-Fauna einiger 
im Flussgebiet des Po golegener Sfisswasserbecken. T. c. pp. 
41-47. 
98. . Zoologisclie Mittheilungen. Yiert. Ges. Zfirich, xxx. p. 3G9. 
Author continues in the Italian lakes his observations on fresh water 
fauna. 
99. Jones, T. R., Woodward, H., & Etheridge, R. The Fossil 
Phyllopoda of the Palaeozoic Rocks. Third Report of Committee. 
Rep. Brit. Ass. 1885, pp. 326-361. 
Discussion of Dames’ view, and of the relations of Nebalia to Phyllo- 
poda , pp. 328-334. 
