MUSEUM OF COMPARATIVE ZOOLOGY. 273 
17. A. S. PACKARD, JR. The Development of Limulus Polyphemus. Me- 
mors of the Boston Society of Natural History, Vol. II. p. 201, fig. 36. 
1872. 
(Forked caudal spine.) 
18. C. F. GISSLER. Description of a Hermaphroditic Phyllopod Crustacean 
(Eubranchipus). The American Naturalist, Vol. XV. p. 136, fig. 1-3. 
1881. 
(Eubranchipus vernalis, showing lateral hermaphroditism both in the 
external claspers, ete. and in the internal genital organs, The internal 
female organs are but poorly represented, — although a single egg was ob- 
served in the ovarial string, — while the internal male organs have their 
normal size and shape.) 
VOL. VIII. — NO. 13. 18 
