xvi DESCRIPTION OF THE FIGURES. 



FIG. 



30. Egg of Phryganea (Mystacides). A 1 , mandibular segment ; C l -C 5 , 



maxillary, labial, and three thoracic segments ; Z>, abdomen. 



31. Egg of Phryganea somewhat more advanced. b, mandibles; c, 



maxillae ; cfs, rudiments of the three pairs of legs. 



32. Egg of Pholcus opilionides, showing the Protozonites. 



33. Embryo of Julus. 



34. Colony of Bougainvillea fruticosa, natural si^e, attached to the under- 



side of a piece of floating timber. 



35. Portion of the same, more magnified. 



36. The Medusa from the same species. 



37. Larva of Prawn, Nauplius stage. 



38. Larva of Prawn, more advanced, Zoe'a stage. 



39. Larva of Echino-cidaris cequituberculata seen from above X ^. 



40. Larva of Echinus X 100. A, front arm ; F, arms of the mouth- 



process ; B, posterior side arm ; L , accessory arm of the mouth- 

 process ; a, mouth ; a 1 , oesophagus ; b, stomach ; b l , intestine ; 

 o, posterior orifice ; d, ciliated bands ; f, ciliated epaulets ; 



c, disc of future Echinus. 



41. Comatula rosacea. 



42. Larva of Comatula rosacea. 



43. Larva of Comatula rosacea, -more advanced. 



44. Larva of Comatula rosacea, in the Pentacrinus state. 



45. Larva of Starfish (Bipinnaria), X 100. 



46. Larva of Starfish (Bipinnaria), X 100, seen from the side. a, 



mouth ; &, oesophagus ; c, stomach ; c l , intestine. 



47. Larva of another Bipinnaria, showing the commencement of the 



Starfish. g, canal of the ciliated sac ; /, rudiments of tentacles ; 



d. ciliated band. 



48. Larva of Moth (Agrotis). 



49. Larva of Beetle (Haltica). 



50. Larva of Saw-fly (Cimbex). 



51. Larva of Julus. 



52. Agrotis suffusa. 



53. Haltica. 



54. Cimbex. 



55. Julus. 



56. Tardigrade. 



57. Larva of Cecidomyia. 



58. Lindia torulosa. 



59. Prorhynchus stagnalis. 



60. Egg of Tardigrade. 



6 1. Egg of Tardigrade, after the yolk has subdivided. 



62. Egg of Tardigrade, in the next stage. 



63. Egg of Tardigrade, more advanced. 



