132 MEMOISS OF THE QUEENSLAND MUSEUM. 



3. castane<E Hood, Bull. Brook. Ent. Soc, vol. x, 1915, p. 70. 



4. citricornia (Hood), Can. Ent., vol. xl, 190S, p. 305, fig. 15 (Phyllolhrips). 



L. flavoantennis Watson, Ent. Xews, vol. xxvii, 1916, p. 129, pi. vi, figs. 7-9. 



5. duinosa (Moulton), Teeh. Ser. 12, pt. iii. Bur. Ent., U. S. Dept. Agr., 1907, p. 63 (Trichothripn 



ilex var. dumosa). 



6. floridensis (Watson), Ent. Xews, vol. xxiv, 1913, p. \i!i, pi. vi, figs. 1-4 (Crypioihrips). 



7. fuscus (Morgan), Troc. U. S. Nat. Mus., vol. 46, 1914, p. 30, figs. 55-57 (Trichollirips). 



8. ilex (Moulton), Tech. Ser. 12, pt. iii. Bur. Ent. U. S. Dept. Agr., 1907, p. (52, pi. vi, figs. 47-49 



(Trichothrips). 



9. leucogonis Hoofl, Bull. Brook. Ent. See., vol. x, 1915, p. 78. 



10. mexicanus (Crawford), Pomona Coll. Journ. Ent., vol. 2, 1910, p. 161 {Liothrips •uinhripennis- 



var. mexicana). 



11. montanus Hood, Proc. Biol. Soc. Wash., vol. xxvi, 1913, p. 163. 



12. ocellattts Kood, Bull. Dl. State Lab. Nat. Hist., jfol. viii, 1908, p. 375. 



13. sambuciHood, Proc. Biol. Soc. Wash., vol. xxvi, 1913, p. 163. 



14. unibripennis (Hood), Ent. News, vol. xx, 1909, p. 30, fig. 3 (Phyllolhrips). 



15. txiricorni* Hood, Proc. Biol. Soc. Wash., vol. xxv, 1912, p. 74, fig, 6. 



Key to Amstralian Species. 

 a. Fore tarsus of female not toothed ; wings darkly infuscate throughout. 



6. Head about 1-3 times as long as wide, not longer than tube . . . . umbraius Hood. 



66. Head about 1-8 times as long as wide and 1-6 times as long as tube tenuis Hood. 



aa. Fore tarsus of female with a stout tooth ; wings clear, or at most slightly infuscate at base, 

 c. Head about 1-2 times as long as wide. 



d. Antennal segments 7 and 8 not compactly united to form a single mass, 8 more than 



twice as long as greatest width . . . . . . . . . . disjunctus Hood. 



dd. Antennal segments 7 and 8 compactly united, forming a single mass, 8 less than 

 twice as long as greatest width . . . . . . . . . . connatus Hood. 



cc. Head very slightly, if at all, longer than wide. 



e. Head slightly longer than wide ; antennse slender, segment 5 about 2-4 times as long 



as wide ; prothorax 0*73 as long as head, bristles long and pale, those at the anteiior 

 and j)Ostenor angles equal in length to eyes . . . . . . gracilior Hood. 



ee. Head slightly wider than long ; antennie rather stout, segment 5 about 1-7 times as 

 long aa wide ; prothorax 0-64 as long as head, bristles short, dark, subequal, and 

 about half as long as eyes . . . . . . . . . . breridetis Hood. 



LIOTHRIPS UMBRATUS sp. nov. 



Female (macrojjlerou.s). — J-iciigth about 2-3 mm. Colour dark blackish brown, 

 with articulations of legs, tarsi, most of fore tibiae, and antennal segments 3-6, yellow ; 

 fore wings darkly infuscate, particularly at base and along median line. 



Head 1-28 times as long as wide, nearly smooth ; checks rounded, converging 

 to the slightly con.stricted base ; vertex broadly rounded, slightly ])roduccd in front 

 of eyes ; postocular bristles pointed, equal in length to ej'es. Eyes slightly more 

 than one-third as long as head, not protruding, slightly narrower than their interval. 

 Anterior ocellus overhanging, directed forward. Antenna; of normal structure, 

 about 1-8 times the length of head ; segments 7 and 8 rather more closely united than 

 the others, but not compactly joined ; senso-cones arranged as usual in the genus ; 



