CONTENTS. , TX 



Experimental parasitism — Continued . 



Experiments — Continued. Page. 



Limneriiim validum. as a parasite of Malacosoma americana (Fabricius). 78 



Results of experiments as determined by dissection 78 



Emergence of adults of Limnerium from reproduction 79 



Length of the stages in the life history of Limnerium 80 



A possibly normal parasite of Malacosoma 80 



Limnerium validum as a parasite of Notolophus antiquus {Ijinxxdiu?^) . . . 81 



Limnerium validum as a parasite of Parthetria dispar (Linnseus) 82 



Experiments with other hosts 83 



Notes on development and anatomy of the larva S3 



The egg 83 



The first-stage larva 84 



Description of the newly hatched larva ; 84 



Function of the tail appendage 85 



Appearance of older larvBe 85 



Notes on the anatomy of the larva SO 



The second-stage larva 87 



The third-stage larva 87 



Description of the full-grown larva 87 



Feeding habits of the imprisoned larva 88 



Respiration of the larva in the third stage 89 



The cocoon ' 90 



Results of the dissections of Hyphanlria during the fall of 1910 90 



General summary 91 



Bibliography -. 92 



Index ~ 93 



ILLUSTRATIONS 



Page. 



Fia . 1 . Schedius kuvanse : Female 4 



2. Schedius kuvamr: Antennce of male and female 5 



3. Schedius huvanie,: Fore and hind wings of female 5 



4. Tyndarichus nav^: Antennre of male and female 6 



5. Tyndarichus navaf. Fore and hind wings of female 6 



6. Anastal.us hifasciatus: Female 7 



7. Atoposom.oidea ogim.se.: Female and details 9 



8. Chalcis ovaia, female: Head, showing carina at front of malar space ... 15 



9. Chalcis ovata, female: Ventral view of hind coxa, showing tubercle... 15 



10. Chalcis ovata, female: Hind femur and tibia, showing markings 15 



11. Chalcis robusia, female: Hind femur and tibia, shoM'ing markings 15 



12. Chalcis incerta. female: Hind femvn- and tibia, showing markings . 16 



13. Chalcis fisJcei. iemale: Hind femur and tibia, showing markings Ifi 



14. Chalcis fiskei,^ female: Head, showing carina at front of malar space 10 



15. Chalcis obscurata, iemvile: Hind femur and tibia, showing markings 17 



16. Chalcis obscurata, female: Head, showing carina at front of malar space 17 



17. Chalcis flavipes, female: Hind femur and tibia, showing markings 18 



18. CTa^cis^avi'pes, female: Head, showing carina at front of malar space.. 18 



19. Chalcis minuta, female: Hind femur and tibia, showing markings 18 



20. Chalcis minuta, female: Kind femur, inner side, showing tubercle near 



base IS 



