ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
G03 
Ostracoda from South Sea Islands.* * * § — Prof. G. S. Brady has a 
report on the Ostracoda collected by Dr. H. B. Brady in the South Sea 
Islands. Very little is as yet known as to these Crustaceans from the 
region where this collection was made. Various Cypridinidae were 
found to he abundant between tide-marks, whereas in the northern 
hemisphere no members of the family have, except on one occasion, been 
taken except by the dredge or in the tow-net over deep water. More 
than eighty species are reported on, a large number of which are new ; 
Pleoschisma and Slreptolcberis are new genera of CypridinidaB. 
Vermes. 
a. Annelida. 
Occurrence of Pelagic Annelids and Chsetognaths in St. Andrews 
Bay throughout the Year.f — Prof. W. C. MTntosh continues bis 
account of the fauna of St. Andrews Bay. The only adult pelagic forms 
are Autolytus and the sexual forms of the Nereides. The rest are 
larval, postlarval, and young stages of Annelids ; they often occur in 
large numbers, and probably exercise an important function in con- 
nection with the food of postlarval and young fishes. As in some other 
groups larvas of the same species are found during several months. 
Tomopteris , formerly considered somewhat rare, is a form which 
frequents the inshore waters from January to December. Chretognaths 
exist in enormous numbers, and in some inshore areas the bag of the 
large midwater-net is distended with a semi-solid mass of them. 
The author deals with the months of the year in order. In July 
there is a decided increase in the number of pelagic larval Annelids ; the 
most abundant were the postlarval forms of Spio, Poly dor a, and Nerine , 
but in August the larval Annelids attain their maximum. In November 
and December there is a marked paucity of Annelidan life, but the 
Sagittae were remarkably numerous and large. 
Polychaeta Sedentaria of Firth of Forth.J — Messrs. J. T. Cunning- 
ham and G. A. Bamage have published the notes and drawings made by 
them when studying the sedentary polychastous worms at the Granton 
Marine Laboratory. 
Arenicola cristata and its Allies.§ — Mr. J. E. Ives thinks that 
Arenicola cristata is found in the Mediterranean as well as in the West 
Indies and North American seas, and that the sixteen species described 
may be reduced to three — A. marina , A. ecaudata , and A. cristata. 
Hekaterobranchus Shrubsolii.||— Miss F. Buchanan gives an account 
of this new genus of the Spionidae, which is found in soft mud at 
Sheppcy. It receives its name from the fact that two kinds of branchial 
organs are present, and that there is a single pair of each kind. A 
single pair of dorsal branchiae, very large, is found on the first segment ; 
the cephalic tentacles are not grooved, but ciliated all over. The pro- 
stomium is well developed and bears four eyes ; the first segment is 
* Trans. Roy. Soc. Edinb., xxxv. (1890) pp. 289-525 (4 pis.). 
t Ann. and Mag. Nat. Hist., vi. (1890) pp. 174-82. 
X Trans. Roy. Soc. Edinb., xxxii. (1888) pp. 635-84 (12 ids.). 
§ Proc. Acad. Philadelphia, 1890, pp. 73-5. 
|| Quart. Journ. Micr. Sci., xxxi. (1890) pp. 175-200 (2 pis.). 
