138 EAST AFRICAN ODOKATA— CALVERT. vol. xviii, 



and the postcostal, not reacliing as far as the first antecubital. Ptero- 

 stigma dark reddish brown, surmounting 3-4 cells, its internal vein 

 prolonged to the principal sector. Membranule with basal half white, 

 apical balf cinereous. Front wings with 21 antecubitals, the 1st and 

 7th thicker than the others; 11 R, 10 L postcubitals, 4 hypertrigonals; 

 triangles of cells, 2 cells being on the inner side; internal triangle 

 present, with one cross vein; three other median cross veins, all nearer 

 the base than the arculus; subnodal sector with six inferior branchlets 

 (including the inferior terminal fork); arculus joining the median nerve 

 at the second antecubital. Hind wings with 15 E, 14 L antecubitals, 

 1st and 7th thicker; 12 E, 14 L postcubitals, 4 E, 3 L hypertrigonals, 

 triangle of 6 E, 5 L cells (but with a rudiment of the vein forming the 

 6th) as in front wings; internal triangle present, with one cross vein; 

 two other median cross veins, nearer than the arculus; subno<lal sector 

 and arculus as above; no anal triangle. 



Measurements. — Length, 70 mm. Abdomen, 59. Front wing, GO. 

 Hind wing, 59. Appendages, 5.5. Pterostigma, 5.5. Breadth of 

 head, 10.5 



Locality. — One female in the National Museum collection, from Kili- 

 manjaro. 



The female of this species has not hitherto been described. Mr. 

 McLachlan's types were two males from Sierra Leone. The female 

 above described seems to belong to the same species. The two males 

 are stated to agree in Size with A. speratus., Hagen,' whose measure- 

 ments are: Length, 72 mm.; abdomen, 51; wings, 56; pterostigma, 5.5; 

 appendages, 7; alar expanse, 116; width of head, 10.5. The present 

 female is somewhat larger, but a greater range of size is known for 

 other species of Anax [JoiKjipes., jioiius, etc.). That A. rntherfordi 

 should be found at a locality so distant from Sierra Leone as Kiliman- 

 jaro is in accordance with the strong powers of flight possessed by the 

 species of Anax and with what we know of the distribution of other 

 African species of this genus. Mr. McLachlan^ records A. fjoliatlt, 

 Selys, from Abyssinia and from Jellah Caflee, in West Africa. The 

 tyi^es of Selys came from Madagascar. Hcmianax ephippigerus^ Bur- 

 meister, occurs in the Congo and Senegal countries, Morocco, Algeria, 

 Egypt, Western Asia, Turkestan, Arabia, the Himalayas, in Moldavia, 

 and occasionally elsewhere in Europe. ^ 



^SCHNA RILEYI, new species. 



Female. — Frons, nasus, rhinarium, and lips brown. Frons darker 

 above, with a yellow half ring inclosing a nearly round dark-brown 

 spot which reaches to the vertex; a yellow line in front of the eyes 

 becomes confluent with this half ring, which latter is slightly inter- 



'Verhd. zool.-bot. Gesell. Wien, 1867, p. 46. 



2Eut. Mo. Mag., XXI, p. 131. 



3 Selys, Ann. Soc. Ent. Belg., XXXI, p. 37, 1887. 



