Insects. 853 



Inhabits Hong Kong, China. Collected in that island, and pre- 

 sented to the British Museum collection, by John Charles Bowring, 

 Esq., of Hong Kong. 



Obs. This insect can scarcely be referred to Isogenus, as I ventured 

 to restrict that genus in the paper to which this forms an addendum, 

 and in which I described the present species from an imperfect spe- 

 cimen in the cabinet of the Rev. F. W. Hope. 



Sp. 2. Chloroperla prasina. 



Both the antennae are broken, so that their original length and 

 number of joints cannot be ascertained; the remaining joints are 

 nearly equal in length and breadth ; their sutures are very evident ; 

 their colour is faded green. The head is flat, and of a green colour, 

 the eyes being prominent and black ; the ocelli three, and colourless. 

 The prothorax is flat, rather narrower than the head ; its transverse 

 diameter slightly the greatest, its anterior margin nearly straight, pos- 

 terior rounded, colour green. The fore-wings are glossy, and of a deli- 

 cate pea-green, the nervures somewhat darker, the hind-wings are 

 more hyaline, but delicately tinted with green, the costal half is glossy. 

 The entire body, legs, and caudal setae appear to have been green, 

 although now faded ; the setae scarcely exceed a fourth of the body 

 in length; they are composed of thirteen joints. Expansion of the 

 wings, 2 inches. 



Inhabits New Zealand. In the cabinet of Mr. Saunders. It is 

 necessary to observe, that Mr. Saunders having placed many Austra- 

 lian insects in the hands of Mr. Gray, of the British Museum, for 

 description, that gentleman has kindly allowed me to publish those 

 which belong to families I have endeavoured to elucidate. 



Obs. This large and striking species agrees but indifferently with 

 the genus Chloroperla, or, indeed, with either of the restricted genera 

 of Perlidae, thus showing how dangerous is the task of generic sub- 

 division. 



Sp. 3. Chloroperla Cyrene. 



The antennae are nearly as long as the body, and, in comparison 

 with congeneric species, rather stout ; the joints, forty in number, 

 are somewhat oval, so as to give the antenna, when viewed under a 

 lens of moderate power, rather a moniliform appearance. The head 

 is not so much flattened as in many species, neither are the eyes very 

 prominent : the ocelli are three. The prothorax is rather wider than 

 the head, and nearly quadrate, but its transverse diameter is slightly 



