262 BULLETIN OF THE 



obtained the larvre of one of the British species from the eggs, and gives a rude figure 



of the first stage of the zoea. 



Couch, R. Q. " On the Itletamorphosis of the Decapod Crastaceans. Ann. Rep. 



and Trans. Cornwall Polytechnic Society, 1843." 



An account of Couch's observations (I have not been able to see the original paper) 

 is given in Bell's " History of the British Stalk-eyed Crustacea," Introduction, pp. 

 Iv-lvii, Figs. /, g, h. 1853. Couch reared the larvae of Porcellaiui platychelcs from 

 the egg, but it is difficult to understand his confused account and figures as repro- 

 duced by Bell. It appears as if Fig. /, which is said to represent the larva on its 

 first escape from the egg, must represent one prematurely extracted from the egg 

 while still clad in the intra-oval veiling membrane, with the rostrum folded under 

 the breast. 

 DuJARDiN, F^Lix. Observations sur les metamorphoses de la Porcellana longicomis, 



et description de la Zoe, qui est la larve de ce crustace. Comptes Rendus, XVI. 



pp. 1204-1207. 1843. 



First stage of zoea, obtained from the eggs. TJie horns of Uie carapace are described 

 as segmented. 

 Daxa, J. D. United States Exploring Expedition. Crustacea. Pp. 684, 685. PL 



45, Fig. 12. 1852. 



Dana's Zoea longispina, taken in the Sooloo Sea, Feb., 1842, is doubtless the larva 

 of a Porcellana. 

 IkltlLLER, Fritz. Die Verwandlung der Porcellanen, Archiv fur Naturgeschichte, 



1862, 1, pp. 194-199 ; Taf. VH. 

 Fiir Danvin, 1864. (Eng. Trans, p. 53, Fig. 24. 1869.) 



Miiller observed the zoeas of three species at Desterro, Brazil, in two stages of devel- 

 opment. His first stage, with simple first antennae and lack of appendages back of 

 the second maxillipeds, is probably the earliest stage of the zoea after quitting the 

 egg. The second form is doubtless the last zoija-stage, as Miiller himself suspected, 

 although he did not rear it into the Porcellana. Miiller did not fail to see the 

 Bracliyuran character of the development of Porcellana. 

 Claus, Carl. Ueber den Entwicklungsmodus der Porcellana-Lai-ven im Vergleiche 



zu den Larven von Pagurus. Sitzungsberichte der Gesellschaft zur Bcfordenmg 



der gesammten Naturwissenschaften zu Marburg. 1867, pp. 12-16. 

 Untorsuchungen zur Erforschung der Genealogischen Grundlage des Crus- 



taceen-Systems, pp. 57-59 ; Taf. VII. Figs. 1-13. 1876. 



Describes zoiia; from the Mediterranean Sea and the Atlantic Ocean in three devel- 

 opmental stages. In the second of these stages the first antenna are still unseg- 

 mented, the third maxilliped and the five pairs of ambulatory limbs exist in the shape 

 of six pairs of short sacs. This is apparently a younger stage than the earliest ob- 

 served by me, in which the abdominal legs have already appeared. Claus' first and 

 third stages are the earliest and last zoea-stages (see above, p. 259). 

 DoHRN, AsT. Untersuchungen iiber Ban und Entwicklung der Arthropoden. 



11. Zwciter Bcitrag zur Kenntniss der Malacostraken und ihrer Larvenformen. 



Zeits. Wiss. Zool. XXI. pp. 372, 373 ; Taf. XXIX. Figs. 48-51. 1871. 



p. 373 ; Taf. XXX. Fig. 52, 1871), and by Claus himself under the name oi Pluteoca- 

 ris (Untersuchungen iiber Crustaceen, p. 65 ; Taf. XII. Figs. 1 -7) ! Claus' refer- 

 ence, moreover, is incorrectly " Froriep's Notizen" instead of "Isis." 



