ASTIl'IlROMMA. AJ KSOClIOTtUS. 51 7 



apex of liiiid trochanters, of tlieir tibiit and tarsal joints, faintlv 

 infiiscate; antcnniv slender, filiform and nearly as long as the 

 body ; two basal abdominal segments very strongly aciculate, 

 the first somewhat strongly dilated, with the spiracles distiiictly 

 beyond its centre ; terebra not extending beyond the anus, which 

 is compressed from the base of the fourth segment. 8tigma sub- 

 in fuscate ; areolet small, distinct, subcircular and elongately 

 petiolate, emitting the recuri'ent nervure from near its apex ; 

 radius angled above the areolet, short and hardly extending 

 further than the broadly curved second recurrent nervure ; 

 internal cubital uervm-e eveidy curved thronghout ; basal nervure 

 continuous ; lower wings with the recurrent as long as the basal 

 abscissa of the radius, and the uervellus distinctly intercepted, 

 though less distinctly geniculate, at its lower third. 



Lencjtli \\ millim. 



Ceylox : Peradeniya, v. 09 {E. E. Green). 



Type in tiie author's. collection. 



The elongately petiolate areolet and very small size distinguish 

 this insect from any of the Palaearctic species, though perhaps it 

 may be placed near A. raripes. Holing, {cf. Thorns. I.e. p. 329). 



I have seen two specimens, one of which was taken by sweeping 

 Croialaria striata. 



Genus MESOCHORUS, Grav. 

 Mesochorus, Graveuhovst, Ichn. ICuioi). ii (1829), p. 960. 

 Genotype, M. splcndidulus, Grav. 



A genus of fragile and usually very small insects, for the most 

 part of a luteous or Havescent coloration and often more or less 

 indefinitely marked w ith black, always strongly nitidulous, with 

 the abdomen sti-ongly convex rather than laterally compressed ; 

 the females always have the terebra exserted and the males their 

 anal styles very prominent, rendering them liable to be mistaken 

 for the opposite sex. From the allied genera the position of the 

 junction between tlie anal nervure and first recurrent of the front 

 wing will sei'vc to distinguish them in the present state of our 

 knowledge. 



lianrje. Xorth America, Europe, Sikkim, Assam, Burma. 



TahJe of Species. 



1 (-') Areolet ses.sile : ba.sal nervure post- 



fiural facialis, Brid<r., p. 'AS. 



2 (1) Areolet petiolate ; basal nervure 



continuous tlirough tlie median. 

 o (4) Stigma unicoloroiis stramineous; 



thorax entirely jiale /raf/i/is, sp. n., p. 519. 



4 (;5) Stig-nia hyaline at both extremities: " ' [p. AT 9. 



thorax partly Ijlark c/arisfi</)iiaficiis, sp. u., 



