ART. 7. STUDIES ON LARVAE OF CRABS — HYMAN. V 



Plate 4. 



I'^iGS. 38-47. First zoea of Pinnixa chaetopterana. 

 Fig. 38. Frontal view of zoea. 



39. Lateral view of zoea. 



40. Antennule. 



41. Antenna. 



42. Mandible. 



43. Maxillule. 



44. Maxilla 



45. First maxilliped. 



46. Second maxilliped. 



47. Abdomen and telson. 



Plate 5. 



Fig. 48. Lateral view of first zoea of Pinnotheres holothurme (from Semper). 

 Figs. 49 and 50. First zoeks of Pinnotheres pisum (from Thompson). 

 Fig. 49. Lateral view of zoea. 

 50. Frontal view of zoea. 

 Fig. 51. Terminal segments of al)domen and telson of first zoea of Pinnotheres veterum 



(from Gourret). 

 Figs. 52-58. Last zoeas of Pinnixa sayana (from Faxon). 

 Fig. 52. First maxilliped. 



53. Second maxilliped. 



54. Frontal \aew of zoea. 



55. Posterior view of zoea. 



56. Third maxilliped. 



57. Third maxilliped, cheliped, and ambulatory appendages. 



58. Maxilla. 



Plate 6. 



Figs. 59-62. Last zoeas of Pinnixa sayana (from Faxon). 

 Fig. 59. Maxillule. 



60. Antennule, a, and antenna, b. 



61. Labium. 



62. Terminal segments of abdomen and telson. 

 Figs. 63-71. First crab stage of Pinnixa sayana (from Faxon) 



Fig. 63. Dorsal view of crab. 



64. Ventral view of crab. 



65. Ventral view of abdomen. 



66. Antennule. 



67. First maxilliped. 



68. Left chela of adult male of P. chaetopterana. 



69. Right chela of adult female of P. chaetopterana. 



70. Second maxilliped. 



71. Third maxilliped. 



