. [Articles sur les oiseaux à partir de National Geographic magazine]. Les oiseaux. Merveilles de la métamorphose 827. "Voir tous les marqueurs je havei" pleure bobby, dernière ligne de la chasse pour le prix d'araignées trapdoor tubes ont été souvent mis en scène, les collectionneurs de recevoir un cent pour chaque nid trouvé. Un grand prix de cinq cents a été décerné pour un tube d'argile contenant un parasite ou d'un homme araignée. Chaque garçon utilise un autre type de papier, marqueurs et l'auteur les ramasse comme il creuse jusqu'aux tubes. Ici les garçons sont "encaisser leurs jetons," avec Mme Jenks agissant en tant que "banquier." parasites-larves, pupes,

• Contributeur: The Book Worm / Alamy Banque D'Images
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. [Articles about birds from National geographic magazine]. Birds. MARVELS OF METAMORPHOSIS 827. "see all the markers i havei" cries bobby, last in line Prize hunts for trapdoor spiders' tubes were often staged, the collectors receiving one cent for each nest found. A grand prize of five cents was awarded for a clay tube containing a parasite or a male spider. Each boy uses a different kind of paper marker, and the author collects them as he digs up the tubes. Here the boys are "cashing in their chips, " with Mrs. Jenks acting as "banker." parasites—larvae, pupae, and adults—but not a single parasitized spider with the larva still within its bod'. So it became evident that the season was short and defi- nite, and that the fires had come just a few days too late. The maggots had already emerged from the bodies of the spiders. I must wait at least another year before I could complete The Case of the Cellophane Sheath. Nevertheless, I had specimens for labora- tory rearing and to send to scientists for possible identification. Again I was for- tunate in that I applied to P. H. Timber- lake, for it just happened that Prof. Harry S. Smith, a co-worker of his at the Citrus Experiment Station, was the man who had found the only previously known specimen. He had seen it flying, knocked it down with his hat, and placed it in a glass jar. This adult female had sprayed many eggs on the interior of the jar, but had died dur- ing the night. This fly was afterwards identified as a new species of the Family Cyrtidae, by Dr. F. R. Cole, of Redlands, noted authority on that family of parasites. Dr. Cole de- termined my male and female specimens to be of the same species, which he had named Ocnaea smithi and had described in a manu- script as yet unpublished. Apparently the name and description of the adult female was about all that was known, and so almost its entire life history was new territory for me to explore. And what a joy it was to explore

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