234 BARKER. 



PLATE II. 



Figure 7. Reconstruction of excretory system of Pachypsolus brachus 



based on frontal sections. X 50. 

 Figure 8. Ventral view of unmounted specimen of Pachypsolus brachus. 



X 30. 

 Figure 9. Cirrus pouch etc. of Pachypsolus tertius, after Pratt 1914, 



Figure 2. X 64. 

 Figure 10. Cirrus Pouch etc. of Pachypsolus ovalis, after Linton 1910, 



Figure 7. X 60. 

 Figure 11. Cirrus pouch etc. of Pachypsolus irroratus, after Looss 1902, 



Figure 169. X 38. 

 Figure 12. Reconstruction of digestive tract of P. brachus based on frontal 



and sagittal sections. X 50. 



