346 EHOPALOCEEA. 



l. Orneates aegiochus. (Tab. LXXXI. figg. 15, 16, 17 s .) 



Eudamus agiochus, Hew. Ann. & Mag. N. H. 1876, xviii. p. 350 \ 



Alis saturate brunneis, anticis ad basin vivide caaruleis, fascia recta mediana angusta a costse medio ad angulum 

 analem venis quinquepartita et punctis quinque subapicalibus in linea arcuata positis semihyalmis : 

 subtus brunneis; anticis fascia et punctis ut supra, costa dimidio proximo et posticis ad basm vivide 

 Cferuleis : capite et corpore supra viridi-cyaneis ; palpis et pectore ochraceis, illis pallidionbus nigro circum- 

 cinctis. 



Hob. Costa Kica, Cache {Rogers) ; Panama, Volcan de Chiriqui {Trbtsch l ), Chiriqui, 

 Veragua (Arce). 



This species was described by Hewitson from specimens sent him by Dr., Staudinger, 

 who has lent us a named specimen which agrees with others from Chiriqui and its 

 neighbourhood. It is a well-marked species, distinguished by the prominence and 

 number of the subapical spots, and by having both wings washed with blue at the base. 



In general appearance 0. cegiochus recalls Thymele fulgerator, but, besides having 

 more rounded secondaries, the presence in the male of a brush of hairs from the 

 proximal end of the hind tibiae shows that its relationship is elsewhere. 



The male genitalia have a short tegumen with a shallow cleft at the end ; the 

 scaphium is well developed ; the harpes are lengthened into a point, and on the middle 

 of the dorsal edge is a slender lobe slightly directed outwards. (See Tab. LXXXI. 

 fig. 17.) 



V . Palpi porrect, divergent ; terminal joint long, slender. 



HYDILENOMIA. 



Udranomia, Butler, Ent. Monthly Mag. vii. p. 58 (1870). 

 Hydranomia, Butler, torn. cit. p. 99; Wats. P. Z. S. 1893, p. 38. 



A peculiar genus, of which the now well-known H. orcinus (Feld.) is the type. 

 This species has a wide range over Tropical America, as will be seen below. A second 

 well-marked species, apparently undescribed, occurs in South Brazil, which has many 

 of the characteristics of H. orcinus, but is, perhaps, not strictly congeneric. 



The antennae have a stoutish club ; the terminal attenuated portion is short, not more 

 than half the thickened part. Head wide, eyes large. Palpi widely apart ; terminal 

 joint long, slender, porrect. Primaries narrow, rather pointed ; costa rather straight 

 and with a fold, outer margin with a notch near the anal angle ; cell about two-thirds 

 the length of the wing ; second and third subcostal segments long and subequal ; upper 

 discocellular long and oblique, middle discocellular shorter than the lower, the latter 

 about equal to the third median segment, which, again, is about one-quarter the length 

 of the long second segment. Secondaries indented on the outer margin near the anal 

 projection; cell rather long and wide, discocellulars and radial faint, third median 

 segment distinct, second subcostal segment long, about half the first segment. Hind 

 tibiae with two pairs of spurs, the proximal pair small. 



