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X. Notes on some British Guiana Hymenoptera {exclusive 

 of the Formicidae). By G. E. Bodkin, B.A., Dip. 

 Agric. (Cantab.), F.Z.S., F.E.S., Government Eco- 

 nomic Biologist, Department of Science and Agri- 

 culture, British Guiana. 



(Published by permission of the Director of Science and 

 Agriculture, British Guiana.) 



[Read December 6th, 1916.] 



Plates XXI-XXIII and Sketch Map. 



Up to the present time very little has been known of the 

 habits and life-histories of the Hymenoptera of British 

 Guiana. Schomburgk,* in his " Fauna and Flora of British 

 Guiana," devotes six pages to the Hymenoptera and gives 

 a few observations with regard to their biology as observed 

 by himself, but unfortunately many of the scientific 

 names are quite impossible to trace. Peter Cameron has 

 published in " Timehri " f a comprehensive list of the 

 Hymenoptera of this country, mth descriptions of many 

 new species, but no biological notes are attached. Scat- 

 tered references have appeared from time to time in many 

 scientific publications, but the majority of these are 

 descriptions of new species. 



The present collection in this laboratory was commenced 

 in 1911 and has been formed chiefly by myself as oppor- 

 tunities have occurred. All the commoner species have 

 now been collected, and in many cases observations made 

 on their life-histories and habits. The accompanying map 

 indicates in red dots the areas where collections and 

 observations have been made. These necessarily follow 



* Schomburgk, R., " Fauna und Flora von British Guiana." 

 Leipzig, 1848. 



t Peter Cameron, Hymenoptera of the Georgetown Museum, 

 " Timehri." Journal of the Royal Agricultural and Commercial 

 Society, 1911-12. Pt. 1. Parasitica, I, pp. 153-18G (1911). Pt. 2. 

 Parasitica, I, pp. 306-330 (1911). Pt. 3. Marabuntas or Wasps, 

 II, pp. 207-231 (1912). Pt. 4. Fossores, II, pp. 412-440 (1912). 



TRANS. ENT. SOC. LOND. 1917. — PARTS II, III, IV (mAY '18) 



