NOTES AND OBSERVATIONS. 195 



on in Ti-inidad. The pupa was bright shining gold. This butterfly 

 occurred also at Guapiles, and (more rarely) at San Jose. 



Thy rid ia melantho, Bates. — One female only taken at Guapiles. 



Dirccnna klugii, Hiibn. — Common at Cartago in May, and at San 

 Jose in June and July. 



D. relata, Butl. & Druce. — One specimen only, from San Jose. 



(To be continued.) 



NOTES AND OBSERVATIONS. 



The Thomas Boyd Types of Micro-Lepidoptera. — It is satis- 

 factory to put on record that these types, as detailed on p. 23 in the 

 January number of this Magazine, are now placed in the National 

 Collection at South Kensington Museum, having been generously pre- 

 sented by Mrs. W. C. Boyd, of The Grange, Waltham Cross. — 

 WiLLOUGHBY GARDNER ; Deganwy, North Wales, May 19th, 1913. 



The Spraying of Oak Trees in Richmond Park. — Some interest- 

 ing experiments have just been carried out in Richmond Park, the 

 object being the extermination of various leaf-eating caterpillars 

 which have attacked the oak trees. The ravages of these caterpillars 

 have been very serious, so that the trees have of late made but little 

 progress owing to defoliation, and in numerous instances the trees 

 have lost their tops. The experiments in question w^ere carried out 

 under the direction of Mr. H. Maxwell Lefroy, Professor of Ento- 

 mology at the Imperial College of Science, who advised the trees 

 being treated with a spray solution. The group of trees operated 

 upon was the Ham Cross plantation, which comprises about four 

 hundred oaks, and the spraying mixture was a solution of lead 

 chromate, which w^as applied by means of a petrol-driven pump of 

 the Merry weather " Ravensbourne " pattern, supplying solution to six 

 spraying nozzles simultaneously. The spraying of the trees in the 

 plantation mentioned occupied two days, and if successful the same 

 treatment will be carried out to the other plantations in the Park. 

 By means of the special apparatus employed, the lead chromate was 

 well and evenly distributed, and it remained on the trees. 



Some Lepidoptera new to Suffolk. — During the past two 

 seasons I have paid more attention to Hymenoptera and Diptera 

 than to Lepidoptera, but as I have taken a few species of the latter 

 order which are not, I believe, as yet on the Suffolk list, I think I 

 should record them : — Brachytcenia hartvianniana ; three captured on 

 the trunks of old willows near Bury St. Edmunds. Laspeyresia 

 servillana; a specimen at Ampton. Polychrosis abscisana; not un- 

 common at Ampton. Penthina capreana; several at Tuddenham. 

 P. nigricostana ; two at Ampton. Apodia bifractclla ; one at West 

 Stow. Coleophora mttantella ; one at Tuddenham. I have to thank 

 Mr. J. Hartley Durrant for determining most of the above insects for 

 me. — (Lt.-Col.) C. G. Nurse; Timworth Hall, Bury St. Edmunds, 

 April 28th, 1913. 



