46 Mr. G. R. Gray's new Species of Phasmata. 



unknown. In size it is less, and the legs are shorter in proportion 

 than in Ph. Chronus, added to which the totally different form of 

 the leaflets gives it a distinctive character. 



The specimen is described from Mrs. Dunn's collection, who 

 received it with Ph. Goliath. 



From the knowledge I have obtained of the differences which the 

 insects of this extensive family undergo in their progress to maturity, 

 I am induced to describe the two following insects as distinct, 

 although neither of them has advanced to its perfect state. 



7*. Phasma (Diura) Osiris. 



Pallide brunneum, mesothorace scaberrimo ; foliolis brevissimis, tri- 

 gonis ; pedibus (anticis mutilatis) intermediis et posticis brevi- 

 bus, lineis elevatis striatis, tibiarum apice et basi parum dilatatis. 

 Long. corp. 4 unc. 6 lin. 



The peculiar form of the leaflets, which are trigonal, at once 

 distinguishes this species from those previously described. The 

 specimen belongs to the Rev. F. W. Hope, who states that it was 

 brought from Melville Island. 



7**. Phasma (Diura) Acheron. 



Albidum brunneo admixtum, thorace subglabro ; foliolis longis, 

 sublatis ; pedibus brevioribus, anticis foliato-compressis, inter- 

 mediis et posticis pauium incrassatis, his spinosis, tibiis interne 

 spinis latis duabus in medio armatis ; tarsorum articulo primo 

 ere c to dilatato. 

 Long. cor}3. 4 unc. 8 lin. 



The anterior legs having a compressed foliation along their outer 

 margin, and the tarsi being compressed above, sufficiently charac- 

 terize this species. It is contained in Mrs. Dunn's collection, who 

 received it with the Ph. Goliath. 



The fifth species which I shall here describe belongs to the 

 Apterous division, and is supposed to form part of the Latreillian 

 subgenus Bacteria, its position being at present doubtful on account 

 of the antennae of both specimens being imperfect. 



12*. Phasma (Bacteria ?) spinosum. 



Thorace, abdominis articulo primo pedibusque fortiter spinosis; 



(J filiforme, flavescenti-brunneum, linea in medio nigra. 

 Long, antennarum corporisque ob fracturas partium ignota. 



? cylindricum albidum, linea in medio eenea. 

 Long. corp. 4 unc. 3 lin. 



This species was received from Swan River by the Rev. Frederick 

 William Hope, who kindly lent me the specimens now exhibited. 



