COMPENDIUM OF GENERIC DISTINCTIONS. 



631 



Genus. OiKETicrs. — Female wingless. Male's body hairy. 

 Antenna' combed at base, serrated at tip, no joints. Wings 

 hairy. Abdomen more than half its length beyond hind- 

 wings. Honduras. 



Family. ARCTIID^.— Antennse of male deeply combed or 

 notched. Wings bent down in repose. Proboscis small, or 

 wanting. 



Genus. Stauropus. — Front wings narrow, tufted on disc. 

 Antenna:' of male combed, except at tip. 



Genus. Notodonta. — Front wings slightly toothed at tip, 

 tufted on inner edge. Thorax not crested. Antennae of male 

 combed. 



Genus. Hypogymxa. — Proboscis wanting. Wings opaque. 

 Antenna? combed in both sexes. Abdomen of male with a 

 brush at tip. 



Genus. Htpercompa. — Proboscis much longer than head. 

 Antennae simple in both sexes. 



Genus. Doratifera. — Proboscis not visible. Antenna? more 

 than half the length of body, combed in male half length, rest 

 serrated to tip. Abdomen as far as hind-wings. 



Family. LITHOSIIDiE. — Antennse mostly slender, sometimes 

 combed or feathered in male. — Proboscis developed. Bodv 

 slender. 



Genus. Pericopis. — Body cylindrical. Palpi hairy in male. 

 Antenna? slightly combed in male, serrated in female. Wings 

 long, partly transparent. Central America. 



Genus. Htelosia. — Palpi nearly as long as head, third 

 joint very small. Antenna? more than half length of body and 

 deeply combed in male; shorter and serrated in female. 



Genus. Callimorpha. — Fore-wings rather triangular. An- 

 tenna? of male .-lightly feathered. Palpi three-jointed. 



Family. NOCTUIDJE.— Body stout. Antenna' mostly simple. 

 Wings moderate, strongly nerved. Proboscis developed. 



Genus. CaloCaMPA. — Fore-wings long and narrow. Palpi 

 short. Thorax slightly crested. Antenna? short and stout. 



Genus. Thtatira. — Wings large, blunt, broad, rather 

 pointed at tip. Crest across thorax. Antenna? short and 

 hairy. 



Genus. Catocala. — Front wings forming triangle, when 

 bent down. Antenna? slender. Slight crest on thorax. 



Family. GE0METRID.5:.— Body slender and limbs feeble. 

 Prosboscis short, weak, and membranous. Wings large. Thorax 

 not crested. 



Genus. BlSTON. — Father stout. Proboscis very short. An- 

 tenna? deeply double-combed. Wings thick, rather small, in 

 both sexes. 



Genus. Ourapteryx. — Body moderate. Antenna? simple in 

 both sexes. Front wings sharp at tip, hinder with small tails. 

 Both sexes winged. 



Genus. Halia. — Wings short, triangular, powdery, hinder 

 pair toothed. Antennas of male doubly combed. Proboscis 

 long. Both sexes winged. 



Genus. Melanippe. — Proboscis long, antenna? simple. Both 

 sexes winged; wings wide and rounded. 



Genus. Cheimatobia. — Proboscis very short. Antenna? of 

 male hairy. Female nearly wingless, wings of male broad and 

 thin. 



Genus. PLATYPTERYX. — Front wings curved at tip, witli 

 hinder edges toothed. Proboscis scarcely visible. Antenna? 

 doubly combed in both sexes. 



Famitij. TORTRICID.a:.— Small. Fore-wings broad, forming 

 triangle with body when at rest. Body slender. Antenna.', 

 mostly simple. Labial palpi broad and flat. Maxillary palpi 

 very small. 



Genus. TORTRIX. — Antenna? very slightly haired in male. 

 Fore-wings rounded at shoulder, hind-wings large. 



Family. YPONOMEUTIDa:.— Labial palpi long and slender, 

 maxillary palpi generally wanting. Antenna' long and slender. 

 Hinder wings fringed. 



Genus, Adela. — Palpi four. Antenna? very long. Eyes 

 very large. Wings metallic; head thickly haired. 



Genus. Ypuxomeuta. — Palpi two. Antenna:' rather hairy. 

 Wiugs large and curled, front pair Ion;; and round. 



FamUj/. TINEIDJE.— Wings narrow. Labial palpi seldom 

 seen; maxillary palpi very large. Antennae moderate. 



Genus. Galleria. — Thorax and abdomen stout. Front 

 wiugs of male scooped at tip, those of female blunt. 



Genus. Uracillaria. — Wings very narrow. Labial palpi 

 very slender, long, and curved; maxillary palpi short, slender, 

 and diverging. Fringe of hind-wing very long. 



Genus. Tinea. — Head crested in front. Labial palpi longer 

 than proboscis. Fore-wings rather long, rounded behind. 



Family. ALUCITID.£. — Body very slender; wings very nar- 

 row, often deeply cleft and fringed. Proboscis long. 



Genus. Pterophorus. — Front-wings two-lobed, hinder three- 

 Iobed. 



Genus. Alccita. — Both pairs of wings six-lobed. 



Order. HO M OPT ERA. — Wings four, membranous; front pair 

 larger than hinder, not overlapping. Tarsi not more than three 

 joints. Body convex. 



Section. TRIM ERA. —Tarsi with three joints. Antenna? 

 very small. Wings with definite cells. 



Family. CICADIDiE. — Head short and broad; eyes large and 

 prominent. Three ocelli placed in a triangle on back of head. 

 Beak long and three-jointed. Legs not for leaping. Males 

 with drums at base of abdomen. Females with ovipositor of 

 two saw-edged blades. 



Genus. Cicada. — Antennas seven-jointed. 



Family. FULGORIDJE.— Antenna? three-jointed; ocelli two, 

 placed beneath eyes. Legs mostly for leaping. Males without 

 drums. 



Genus. Hotixus. — All wings variegated. Head elongated 

 into a long process, slightly curved upwards. Exotic. 



Genus. Pceoiloptera. — Hinder wings not variegated. Head 

 not elongated. Ocelli wanting. 



Family. CERCOPID.ffi.— Antenna? three-jointed, last joint 

 forming a long bristle, set between eyes. Ocelli two. Legs for 

 leaping. No drum in male. 



Genus. Cercopis. — Head small. Ocelli apart, set on upper 

 side of head. 



Genus. Aphrophora. — Head moderate. Ocelli close to- 

 gether, on crown of head. 



Genus. Bocydium. — Prothorax developed into a curious ar- 

 rangement, consisting of a footstalk, with a branch backwards 

 and a cross-bar in front, bearing four knobs, two central, on 

 short footstalks. Brazil. 



Genus. Tettigoxia. — Distance between ocelli and ocelli and 

 eyes equal. 



Section. MONOMERA.— Tarsi one jointed. Wings not 

 celled. Antenna' from six to twenty-five joints. 



Family. COCCID.ffi.— As section. 



Genus. Coccus. — Male winged; abdomen with two long fila 

 ments at side and shorter appendage in middle. Females gall- 

 like, fixed. 



Section. Dl M ERA. -Tarsi two-jointed. Wings partly 

 with cells. Antenna- moderate. 



Family. APHIDiE. — Antenna? seven-jointed. Wings numer- 

 ously veined. Beak four-jointed. Ocelli three, in a triangle. 

 Front wings largest. 



Genus. Aphis. — Abdomen with two projections. Antennae 

 long, hair-like. Proboscis short. 



<;,„>ts. Phylloxera, or Pemphigus. — With and without 

 veined wings. North America and Europe. 



Order. HETEROPTERA.— Wings four, front pair largest, 

 partly overlapping. Basal part leathery, rest membranous. 

 Body flattened. 



Section. HYDROCORIS A.— Aquatic. Legs for swim- 

 ming. Fore-legs short and folding, for prehension. Antennae 

 very short, hidden in furrows under eyes. 



Family. NOTONECTIDiE. — Hind-legs long, fringed, and oar 

 like. Body b i.it-shaped. Beak short, sharp, and thick. 



Genus. Notonecta, — Body oval, cylindrical. Front tarsi 

 three-jointed. 



