274 Entomological Society. 



the head and thorax splendid green) ; likewise several new aquatic 

 beetles and Buprestida, and two new species of Ontkophagns ; but he 

 had met with no Necrophaga. The little insect allied to Elaphrus 

 is exceedingly abundant, and he had collected three species of Adelo- 

 topus, one described by Mr. Hope in Trans. Ent. Soc. vol. i., and two 

 others ; he had also seen one or two more, and had collected another 

 species of Scarites, a species of Trox (very abundant), nine Melolon^ 

 thidce, three species of Mantispa and seven of Myrmeleon. 



In reference to the Phasmidce noticed by Mr. Fortnum, the Presi- 

 dent stated that he considered Mr. Fortnum's communication to be 

 one of great interest, as affording a further proof that reproduction 

 of the limbs takes place in true insects. He also stated that he is 

 equally sure that reproduction of lost parts takes place in the Myria- 

 poda, as he formerly expressed his belief when exhibiting an instance 

 of what he regarded as the first noticed occurrence of this fact in a 

 tScolopendra, at^the meeting of this Society in November 1839. In 

 consequence of the suggestions made by Mr. Westwood on that oc- 

 casion, that the limb in the specimen in question had not been re- 

 produced, but was only an instance of retarded development of the 

 original limb, and at a subsequent meeting of the Society (November 

 2, 1840), Mr. Newport had instituted a series of experiments on the 

 lulidcE and Lithohii, in which reproduction both of the antennae and 

 legs had taken place, and in one instance the reproduction of some 

 of the legs was repeated a second time in the same individual Litho- 

 bins. He stated also that reproduction of lost parts does not take 

 place after the individual has acquired, or has very nearly attained 

 its adult size. 



Mr. Marshall also stated that he had observed a specimen of the 

 common species of Blatta, one of the legs of which was much smaller 

 than the rest. 



Mr. Yarrell mentioned, in reference to the continued growth of 

 the limbs in the Crustacea, that it appeared to have its limits, as he 

 had observed lobsters several years old which had certainly not lately 

 cast their shells, which they did not fill. 



An extract was also read from a letter addressed by Colonel 

 Hearsey to Mr. Westwood, giving an account of the habits of a mi- 

 nute species of the genus Diopsis, in India. 



This species is very closely allied to Say's D. brevicornis*, and 

 was captured by Colonel Hearsey in different months and various 

 localities ; some on window-panes in June, some on orange and ci- 

 tron leaves in gardens in July, and some in the middle of August on 

 cucumber leaves ; they appear to feed either on the sweet deposit of 



* It may be thus characterized : 



Diopsis Hearseiana, W. Brevis, robusta ; capite fulvo, nigro vario, cor- 

 nubus oculiferis abbreviatis crassis, apice nigris ; thorace griseo-nigro, 

 spina brevi utrinque sub basin alarum aliisque duabus, apicalibus alhidis 

 longe setigeris ; abdomine nigro nitido ; pedibusJlavescentibus,femori- 

 bus anticis intus fusco maculatis, tibiisque anticis nigris, alls hyalinis. 

 Long. Corp. lin. 2 ; expans. alar. hn. 4. 



