Dr. Steinmann Henrik szerk.: Folia Entomologica Hungarica 23/1-12. (Budapest, 1970)

ra, Hemiptera, Homoptera, a part of Hymenoptera etc. was ethylacetate, applied in 5 to 10 drops in the killing jar. The plastic killing jars were usually filled with wooden wool,sometimes with sawdust. It has been observed that the stiffening effect of chloroform as a killing agent can be markedly reduced if the narcotized material of the light trap is finaly killed in ethylacetate vapour. Potassium cyanide was applied for Lepidoptera, Diptera, a part of the Hymenoptera and some other sensitive insects. Ethanol in 75 # or sometimes in 65 concentrations has been applied as killing agent for groups where preservation was also in ethanol

. In some cases, e.g. minute Coleoptera requiring dissection, the reduction of stiffening could be achieved by a preliminary killing in ethylacetate vapour or in diluted ethanol (cca 50 i°)

. For transportation, Macrolepidoptera were stored in paper envelopes (folded to a triangulars shape), the micros were pinned. The very fragile and minute insects, sometimes even if later mounted, and together with those finally preserved in ethanol, have been stored in 75 spirit. The majority of insects for later mounting,except those mentioned above,have been preserved in dry condition. To avoid breakage, these insects have been selected for size-groups before a preliminary drying on Petri dishes. After a few days, the material was transferred to glass tubes, furnished with the collection number, gently fixed with a tuft of cotton wool, and kept in a desiccator with silicagel. Insect museum in tropics An insect collection in tropics requires much care, and ceratin strict precautions must be taken in the collection room, cabinets, boxes and utensils. The requirements, however, are not more specific than the conditions provided for in the mo-