PLATI-: 9 



EXPLANATION OF FIGUJEU - 



Embryology of Photuris pennsylvanica 



19 Cross section of an embryo at an age intermediate between figures 39 and 



11 : abdominal region. A, amnion: C, future body cavity; IC, primitive eoelom; 

 Gr, neural groove; //. haemocyte; LG, leg; NB, neuroblasts; 1*. vitellophag; Y. 



yolk. 



"id Sagittal section through two coelomic sacs. C, future body cavity; IC, 

 primitive eoelom; K. ectoderm; FB, fat body; //. haemocyte; .1/. mesoderm; OE, 

 oenocytes; Y. yolk. 



51 Cross section of an embryo of about the same age as figure 41. A, am- 

 nion: C, future body cavity: IC, primitive eoelom; K. ectoderm: EXT entoderm 

 of midgut : FB, fatbody; G, ganglion: GN, gonad: //. haemocyte; NB, neuroblasts; 

 0, amniotic cavity: OE, oenocytes; PC, pericardial cells: S, serosa; Y, yolk. 



.52 Sagittal section of an embryo of about the same age as figure 51. A, 

 amnion; I A, pleuropod; BR, brain: E, ectoderm; Ent, entoderm; F, punktsub- 

 stanz: GN, gonad: //. haemocytes; IN, inner neurilemma; 0, amniotic cavity; 

 0N ; outer neurilemma; PR, proctodaeum; S, serosa: SG, suboesophageal body; 

 St, stomodaeum; T, trachea: Y, yolk. 



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