JUNE 19, 1932 



COBB: METONCHOLAIMUS PRISTIURUS 



441 



ndittt .parsed dint, % 

 mcsmn 

 cnfmt 



Fig. 1 Living 

 9 M. pristiurus. 

 Drawing, from 

 favorable speci- 

 men s, m o d i fi e d 

 from examination 

 of intra-vitam 



methyl blue 

 staining, and, to a 

 very slight extent, 

 of carmine stain- 

 ing. Two views of 

 the same head, in 

 glycerine, are 



shown. X 750. 

 The abbreviations 

 are self-explana- 

 tory; e.g., "pars 

 ext cl int," ex- 



...:.v...-/.,...^*'-~ - ternal portion of 



'-dM69 intestinal cell. Food occurs in the intestine 

 OT?7/from 92 to 101. Most of the features drawn 

 , can be seen in good specimens with a 4 mm^ 

 objective; some, however, require a .good _2 or 

 '^3 mm. mmersion objective. Cuticulan* 

 mnarts eg of the head, may be favorably 

 - 7 vfewe'd in'5-10% KOH solution. Specimens 

 'UtslmeM jSen and instantly treated with acetic ac,d 

 ' methylene green are useful. 



mcsmioo 

 .dord MIDI 

 dintbhfnv 



