78 Mr. \V. F. Kiiby on Odonata from Sierra Leone. 



Thorax and pleura shining metallic green ; thorax and base 

 of abdomen clothed with grey hairs. Pleural sutures and 

 intcralary spaces with slight pale markings ; abdomen black, 

 with narrow pale belts in the middle of the second, third, and 

 fourth segments, and near the front of the second and sixth 

 segments, the last the broadest. 



Wings rather long, narrow, and pointed, clear hyaline, with 

 black nervures. Fore wings witli 15-16 antenodal and 9 

 postnodal cross-nervures ; the nodal and subnodal nervures 

 nearly straight and parallel for most of their length ; triangles 

 small, free, followed by a cell divided by a curved line 

 running from the triangle, and then by several single or 

 irregularly divided cells, followed by several rows of two, 

 increasing. Only 3 supratriangular nervures; 5 cross-nervures 

 in the lower basal cell. Pterostigma deep black ; membranule 

 dark brown, intersected by a pale line. Hind wings with 11 

 antenodal and 11-12 cross-nervures ; 2 supratriangular ner- 

 vures and cross-nervures, 4 in the lower basal cell; no lower 

 triangle ; upper triangle free, followed by a triangular cell, 

 then by o single oblong ones, and then by two rows of 

 cells, increasing. Membranule black, with a white speck at 

 the base and tip ; anal triangle divided low down, the lower 

 part forming a long narrow isosceles triangle (in Al. Sophia^ 

 De Selys, it is almost equilateral), and the nervure bounding 

 the anal angle is more distinctly marked with red. Anal ap- 

 pendages nearly as in M. Sophia, 



One male taken by Mr. Austen on Sept. 16 (1899). 



I'his species is closely allied to M. Sophia, De Selys, but 

 differs in the clear hyaline wings and many little details of 

 neuration, especially by the commencing single row of post- 

 triangular cells on all the wings. 



Anaciceschna triangulifera. 



Anaiiceschna trianc/nUfera, McLachlan, Ann. & Mag. Nat. Hist. (6) 

 xvii. p. 407 (1896). 



Sept. 9 (1899). 



A single damaged specimen, which I refer to this East- 

 African species (Delagoa Bay and Natal) with some un- 

 certainty. 



Sapho ciliata. 



Ayriun ciliata, Fabricius, Spec. Ins. i. p. 528. n. 3 (1781). 

 Sapho ciliata, Kirb. Cat. Neur. Odon. p. 100. n. 1 (1890). 



34 specimens, Freetown, Sierra Leone, Sept. (1899). 



A very interesting series. The immature specimens of 



