442 PERCY SLADEN TRUST EXPEDITION 



I think it advisable to give the following brief particulars of the present insect, in 

 view of the many respects in which it differs from the one described by De Selys : — 



$. Length of abdomen, including anal appendages, 34'5 mm. Hindwing 21 '5 mm. 

 in length, with 10 (occasionally 11) postnodal cross nervures. Colour characters rather 

 variable. Labium yellowish. Labrum greenish-grey. Vertex chocolate. Ocelli garnet 

 colour. Pronotum mostly yellowish. Dorsum of meso- and meta-thorax chocolate-brown, 

 with a variable amount of greenish-yellow. Sides and lower surface of thorax yellowish, 

 with a pair of black rounded spots on the pectus. Femora of forelegs yellowish, bordered 

 with black ; tibiae with a median black line on the upper surface. Mid- and hindlegs 

 yellowish, not lined with black. Tarsi of all legs partly black ; claws and spines black. 

 Wings hyaline ; reticulation reddish-brown ; pterostigmata dark chocolate-brown, cover- 

 ing two cells. Abdomen generally glossy dark brown; segments 1, 2, and 10 partly 

 yellowish ; 3, 4, 5, and 6 with blackish markings near the apex ; 7 largely, and 8 and 9 

 wholly, blackish ; 8 with numerous dark denticulations on the apical margin. Upper anal 

 appendages yellow, blackish at the tips, the inner margin with a large sharp tooth above 

 and two smaller blunt teeth below ; several minute blackish denticulations on the outer 

 margin ; lower appendages blackish above, about a third of the length of the upper. 



?. Length of abdomen 32'5, of hindwing 21 "5 mm. Postnodals 11 (in 8 wings) to 

 12 (left forewing). The single $ in the collection (from Cosmoledo) appears to be an aged 

 individual, inasmuch as the wings are decidedly smoky, as well as considerably frayed. 

 The insect generally is darker than the $, the whole of the face, head, and abdomen being 

 of a uniform blackish brown. A lighter colour, however, is observable in portions of the 

 thorax, and the legs are of a warm brown. The anal appendages, which are colonized like 

 the abdomen, are a little shorter than the 10th segment. 



Agrioninse. 



18. Allolestes maclachlani Selys. 



Allolestes M'Lachlani Selys, Ann. and Mag. Nat. Hist. (4), iii. p. 275 (1869). 



Loc. Seychelles. Mah6 : 1$ (immature), Morne Seychellois, over 1500 feet, 4. IL 

 1909 ; 1 ?, Cascade Estate, about 800 feet ; 1 ?, from near Morne Blanc. Silhouette : 1 ? 

 (immature), Pointe Etienne, low cultivated country, IX. 1908. Praslin, 1905. 



19. Allolestes nigra Martin. 



Allolestes 7iigra Martin, Mem. Soc. Zool. France, ix. p. 107 (1896). 



Loc. Seychelles. Silhouette: 1 $ (mature), Mare aux Cochons, IX. 1908. 



The genus Allolestes has Oriental affinities and is confined to the Seychelles, and the 

 two known species are extremely rare in collections. They are included among the 

 remarkable Agrionine forms having long pterostigmata, and sectors interpolated between 

 the principal veins of the wings, as in the true Lestinge. 



20. Leptocnemis { = Hemicnemis) hilineata (Selys). 



Trichocnemis hilineata Selys, Ann. and Mag. Nat. Hist. (4), iii. p. 276 (1869). 



Loc. Seychelles. Mahd : 8 ^, 2 ? , from near Morne Blanc ; 2 $, Cascade Estate ; 1 $ 



