of the Fishery Board for Scotland. 



175 



Mayer. — *'Zur Entwicklvingsgeschichte der Dekapoden." Jenaische Zeitschr 

 Naturwissen. Bd. xi., 1877. 



Meek. — "On the Growth of the Crab," Northumherland Sea Fisheries Committee. 

 Report on the Scientific Investigations for the year 1902. Newcastle-upon- 

 Tyne, 1903, p. 58. 



Milne-Edwards, A.,etE. L. Bouvier. — " Les Bathynomes." Mem. Mas. Camp. 



Zool., Harvard, xxvii.. No, 2, 1902. 

 MoRTENSEN. — " Undersogelser over vor Almindelige Rejes {PaUemon Fabriciiy 



R. and K.), Biologi og Udviklingshistorie . . . " Copenhagen, 1897. 

 Prentiss. — "The Otocyst of Decapod Crustacea: its Structure, Development, 



and Functions," Bull Mns. Compar. Zoology, Harvard, vol. xxxvi., No. 7, 



10 pi. Cambridge, U.S., A., 1901. 

 Spence Bate. — " On the Development of Decapod Crustacea," Phil. Trans, Roy. 



Socy., London, 1859, p. 589, pi. xl.-xlvi. 

 Steering. — "A History of Crustacea: Recent Malacostraca," International 



Science Series, vol. Ixxiv. London, 1893. 

 J. Vaughan-Thompson. — "Zoological Researches," vol. i., Pt. I. Cork, 1828. 



,, — " The Double Metamorphosis in Decapod Crustacea," 



Phil. Trans. Roy, Socy., London, 1835, p. 359, 1 pi. 

 Williamson, H. C. — " On the Larval Stages of Decapod Crustacea — The Shrimp 



(Crangon vidgaris, Fabr.)," Nineteenth Report of the Fishery Board for 



Scotland, Pt. III., 1901, 6 pi. 



LIST OF DRAWINGS. 



The Drawings were all outlined by means of the Camera lucida. The hair and 

 spine arrangement is shown identically as found in the appendages in nearly all 

 the sketches. In Figs. 36, 55, 77 (2 m). 166, 170, and 173 the hairs are not re- 

 produced in identical number nor position. 



Letters Used. 



a. — antennule. 



ab. — abdomen. 



nn. — anus. 



A. — antenna. 



ap. — pleuron. 



h~isch. — basi-ischiopodite. 



br. — branchia. 



car. — -carapace. 



carp — carpopodite. 



cox. — coxopodite. 



cr. — crown (mandible). 



dact. — dactylopodite. 



e. — cutting edge(mandible). 



en. — endopodite. 



ep. — epipodite. 



ex. — exopodite. 



fr. — fracture plane. 



sr.— gut. 



ga. — ganglion. 



I. -IV. — lst-4th Zoea stages. 



1 m. — first maxilla. 



2 m. — second maxilla. 

 mer. — meropodite. 

 mn. — mandible. 



mp (1-3). --1st, 2nd, and 3rd maxilli- 



pedes. 

 o. — eye. 



per (1-5). — lst-.5th pereiopod. 

 pi. — pleopod. 

 prop. — propodite. 

 prot. — protopodite. 

 St. — sternum. 



sw. — swelling, bud of flagellum (A). 

 t. — tooth. 

 T.— telson. 

 th. — thorax. 



1-4. — lst-4th young stages. 



EXPLANATION OF PLATES. 



The magnifications (in diameters) are approximate. 

 Plate VII. 



Fig. 1. End of first joint of jointed branch of antenna, I. Zoea. 

 Fig. 2. Antennule, I. Zoea ; ga. ganglion, 



Fig. 3. Antennule, II. Zoea, ..... 

 Fig. 4. Antennule and antenna. III. Zoea, 



Fig. 5. End of first joint of jointed branch of antenna, III. Zoea. 

 Fig. 6. Antenna and antennule, IV. Zoea, 



