536 Mr. AV. F. Kiiby on Odonata from Hainan. 



9. Matrona basilaris. 



Matrona basilaris, Selys, Sjn. Cat. p. 17 (1853) ; Kirb. Cat. Neiir. 

 Odon. p. ]00. 11. 1 (1890). 



Four specimens, three males and one female. 

 This species was formerly represented in the Natural 

 History Museum by 71/. nigripectuSy De Selys. 



10. Bayadera^ sp. 



A single specimen of a very distinct species, with lateral 

 greenish stripes on the thorax, and stained with smoky yellow 

 towards the base, and broadly along the costa of all the wings 

 nearly to the pterostigma. The tips of the wings are also 

 infuscated nearly to the level of the base of the ptero- 

 stigma. Unfortunately both the tliorax and abdomen are so 

 much damaged that it is not desirable to describe the species 

 from so defective a specimen, especially as it is not impro- 

 bably immature. 



11. Pseudophaa decorata (?). (PI. XII. fig. 2.) 



EupJuca decorata, De Selys, Syii. Cat. p. 51 (1853). 

 Psendojihcea decorata, Kiib. Cat. Neur. Odon. p. 109. n. 6 (1890). 



A male specimen considerably larger than the dimensions 

 given by De Selys, and with the brown band of the hind 

 wing extending basally as far as the nodus, and in the middle 

 of the wing further than this point. It may be a distinct 

 species, but in the absence of a typical specimen of P. decorata 

 to compare, it would not be advisable to describe it from a 

 single specimen. 



12. Rhinocypha Whiteheadi, sp. n. (PI. XII. fig. 4.) 



Long. corp. 27 millim. ; exp. al. 47 millim. 



Male. — Black ; vertex between the eyes with a transverse 

 row of four blue spots ; pronotum lilac above, with transverse 

 black carina3 and two blue spots on each side; mesonotum 

 with a lilac triangular spot in the middle at the base and a 

 blue dash on each side ; at the extremity is a blue spot on 

 each side; mesopleura blue, nearly divided in two by a black 

 space from behind, and projecting a short streak in front ; 

 metapleura blue, the suture between broad behind ; interalary 

 space spotted with blue, with a white spot between each 

 pair of wings, and a white curve on each side of the front 

 spot ; legs white beneath ; abdomen with the first segment 

 blue on the sides and narrowly behind, second and third 



