St 



Another specimen measures 15 mm. by 11.25 "^"i- The smallest 

 specimen was 11-25 mm. by 8-75 mm.^ and in this there was a 

 young one measuring 2.4 mm. by 1.66 mm. All the specimens 

 appeared to be females. 



ihe young- one just mentioned exhibited the various append- 

 ages ill a forward condition of development^ with the exception 

 of the vermiform limb, the presence or absence of which was not 

 ascertained. The second antennae have a single simple se?ta 

 attended by a spine on the apical joints and each of the preceding 

 jomts similarly armed-The secondary appendage is indistinctly 

 jointed^ and has a long apical seta- The antennal notch is set far 

 back, instead of being forward as in the adult ; the ventral 

 margins of the valves are wide apart, and dorsally the valves are 

 open anteriorly, showing bases of the two pairs 

 of antennae. A much less advanced embryo from the 

 largest specimen shows the same backward position of 

 the antennal notch, but the valves more nearly meeting in front. 

 By comparison of these two examples, it may be supposed that 

 the body at a certain stage develops more rapidly than the valves. 



Locality: — Cape St. Blaize N. by E- 73 miles. Dep(th, 125 

 fathoms- Bottom, sand and shells- And, Cape St. Blaize N. by 

 E. 67 miles. Depth, 90-100 fathoms- Bottom, rough. 



Professor Chun, in his account of the Valdivia expedition, 

 figures some giant Ostracoda from dei^hs of the Atlantic and 

 Indian Oceans. Some of the specimens were taken off the East 

 African coast, but they do not agree in shape wath Jthe species 

 above described, and are assigned to the family Halocypridse (see 

 Aus den Tiefen des Weltmeeres, p. 515, figures in text, I900). 



