PARCA. 361 



TIBET : Gyangtse, vi. 04 (//. J. Walton). 

 Type in the British Museum. 

 Described from a single specimen. 



Genus PARCA, Mori. 

 Parca, Morley, Rev. Ichn. Brit. Mus. ii, 1913, p. 133. 



GENOTYPE, P. ocularia, Mori. 



Head very strongly transverse, broader than the thorax, with 

 the unusually prominent eyes very remote from the extremely 

 small and closely contiguous ocelli ; vertex acute ; frons and face 

 strongly deplanate and subglabrous ; clypeus basally discrete, 

 apically margined and subtruncate ; mandibles apically unidentate 

 and obtuse ; palpi very slender. Antennae setaceous and hardly 

 longer than the body ; scape broader than long and very broadly 

 excised apically. Thorax subglabrous and strongly nitidulous, 

 with the notauli very deeply impressed, transversely crenulate, and 

 discally coalescent ; metanotum with a strong and entire central, 

 and lateral traces of a petiolar, transverse carina ; spiracles elon- 

 gate-oval and large; sternauli deeply impressed. Scutellum not 

 longer than basally broad, nor convex, with its sides entirely 

 immarginate. Abdomen sublinear, riot at all compressed and very 

 finely shagreened from centre of second segment ; basal segment 

 glabrous and very little widened apically, with the somewhat pro- 

 minent spiracles hardly before its centre ; thyridii subdorsal and 

 remote from base of second segment ; terebra as long as basal 

 segment. Legs elongate and slender ; intermediate tibise with the 

 two calcaria equal ; claws small and not at all pectinate. Wings 

 not ample, hyaline ; areolet entirely wanting ; both abscissae of 

 radius straight ; second recurrent nervure emitted only slightly 

 beyond the very slightly curved internal cubital ; submargmal 

 nervure obsolete ; nervelet wanting ; upper basal nervure emitted 

 from the median distinctly further from the base of the wing than 

 the lower basal ; nervellus strongly postfurcal and intercepted but 

 slightly above its centre. 



Range. Ceylon. 



Its deplanate abdomen, subcentral petiolar spiracles, entire lack 

 of an areolet, basally straight external radial abscissa, simple claws, 

 small ocelli and protuberant eyes, render this genus very remark- 

 able. It is probably most closely related to Opheltoideus, Ashm. 

 (Proc. U.S. Mat. Mus. 1900, p. 95), which is the only genus of 

 this tribe with no areolet and contains but a single MS. species, 

 without locality ; but the present genus is very different in the 

 conformation of the scutellum, which is not unusually convex and 

 margined neither at base nor apex. 



258. Parca ocularia, Mori. 



Parca ocularia, M orley, loc. cit. 

 . A strongly nitidulous, slender and testaceous species with 



