254 Scientific Proceedings, Royal Dublin Society. 



PORPHYROPS Hal. 

 THOKACICA Hal. 



RANUNCULI Hal. {nec Lw. Schin. Beck.) 

 var. chrysostoma Hal. {^nec Mg.). 



TARSATA Hal. 

 COCHLEARIJE Hal. 



nigripes (? Zett. &c.) Beck. 

 erythrostoma Hal. i^nec Mg.). 

 Ccenia defecta Hal. — Original description : — 



" Ephydra defecta. Nigro-cenea, scutello violaceo nitido, alis obscuris 

 hyalino-gntiatis, antennis suhtus hiteis. (Long. '08.) 



" (To division B.) Seta of antennse pectinate : face silvery : semi- 

 circle of the vertex steel blue : markings of the wings nearly as in 

 E. noctula : base of the metatarsi obscure yellow." 

 The " division B." referred to is that of Meigen, Syst. Beschr. vi, 115. 

 In 1839 Haliday re-described it as follows : — 



" ** Antennce articulo 3° mhconico. 



"Sp. 21. defecta, B. Cseu. nigro-senea scutello cyanescente, antennis 

 subtus tarsisque luteis, alis obscuris hyalino-guttatis. 



" Ent. Mag. i, 174. 



" Common in swampy spots." 

 There are five specimens in Haliday's collection without label, which can 

 only be the above species, because of the pectinate antennse and steel-blue or 

 violet vertex and scutellum; they have three pairs of strong dorso-central 

 bristles and acrostichals extending irregularly to the scutellum, two pairs of 

 vertical and two pairs fronto-orbital bristles, and undoubtedly belong to the 

 genus Philotelma, as I suggested in 1911 (Ent. M. Mag., p. 186). They 

 appear to differ from nigripennis Mg. by the more greyish-white face, the 

 paler third antennal joint beneath, and in the male by having a less distinct 

 posteroventral row of bristles on middle femora. The hyaline spots on wings 

 are not very conspicuous. 



Parydra hecate Hal. — Original description : — 



" B. hecate. Nigro-cenea, alis fuliginosis, nervis transversis ohscnris 

 ntrinque hyalino guttatis. (Long. '11 ; dilat. '22.) (To division C. b.) 

 Resembles the last ; but the wings are much shorter and darker, at the 

 Olid of the second nervure a dusky spot, and a distinct white one above 

 and below each transverse nervure : the nervures of the tip bordered 

 with brown : hind feet brown." 



