PLATE XXXIII. 



3. Unsegniented egg. Egg with two blastomeirs. 

 Egg with four blastomeies. Ej;g with eight lilastomeies, 

 oiilj' six showing. Egg with lilastonieres, all showing. Egg 

 with sixteen lilastonieres. Egg with thirty-two hlasto- 

 ineres. Egg with sixty-fonr hlastomeres. Egg with eoiled- 

 up larva, lipe for hateliing. A similar egg, artificially 

 rnptiired, and the larva in the act of escaping. This shows 

 the contraction of the egg-shell when niptnrej. 



Fig. 1. Male Trkho- 

 slmrtgyhis pi rgrocilis, 

 sliowing vt month, ali- 

 mentary canal, sj»ie»iles, 

 and geiMtal Imrsa. 

 Magnitied. 



Firj. 2. Eeniale T. per- 

 gracilis, sliowing on. 

 anus : r (j/. cephalic 

 glands ; m. month ; oc. 

 lescipliagus; (;/'. ove- 

 jeet"r; o. ovary; j}li. 

 pharjnx ; r. rectum ; 

 !(/. uterus with aegincnt- 

 ing eggs; n. vagina. 

 Magnified. 



Fii;. 5. A female 7'ri-hosoiifi loiijicolle. 

 Magnitied about seven times. 



I'lo. 4. Three specimens of female 

 Triclwsoma longieotlc. Magnitied 

 about twice. 



TniCIIOfiTliONGYLUS I'EIKiliACILIS AND TlilCIIOSOMA LONGICOLLE. 



Oiiposilr ;>. 200.1 



