ORTHOPTERA. — THYSANOPTERA. 45 
Family 5. GRYLLIDZ Leach. (Locustariz Latr.) 
EPHIPPIGER Laér. Baxsitistes Charp. 1 sp. £. virescens Steph. 
Tegmina very short, ocellated in g; very minute, rugose in 9; wings 0; vertex 
subacuminate ; ovipositor broad, short, incurved. 
MICROPTERYX Steph. Antisorrera Serv. 3 sp. G. brachyptera Linn. 
Tegmina nearly as long as abdomen, ocellated in § ; front broad, obtuse, rounded ; 
wings none, or rudimental. De Geer, 3. pl. 22. f. 2, 3. 
XIPHIDION Latr. Locusta p. Fab. 2sp. L. fusca Fab. Panz. 33. f. 2. 
Tegmina more or less elongated, ocellated in ¢; wings unfit for flight ; head 
acuminate in front ; eyes exserted. 
MECONEMA Serv. Locusta p. Latr. 1lsp. L. varia Fab. Donov. 3. pl. 79. 
Slender ; tegmina long, not ocellated in g; wings ample; front acuminate ; ab- 
domen ¢ terminated by two long incurved processes. 
PHASGONURA Westw. Locusra Serv. 1 sp. G. viridissimus Linn. 
Tegmina and wings long, ocellated in g; front acuminate ; apex of abdomen with 
four short styles ; ovipositor long, straight. Donov. 4. pl. 130. 
DECTICUS Serv. Acripa p. Curt. 3 sp. Gr. verrucivorus Linn. Curt. 82. 
Tegmina and wings long, ocellated in ¢; front obtuse ; eyes sessile ; ovipositor 
long, more or less incurved. 
Family 6. LOCUSTID Leach. (Acridii Latr.) 
LOCUSTA Leach. QEptropa Latr.* 22sp. G. flavipes Gmel. Curt. 608. 
Prothorax not scutelliform ; antenne simple; wings and tegmina ample. 
PODISMA Latr. Grytutus p. Linn. 1 sp. G.pedestris Linn. Panz. 30. 8. 
Tegmina and wings very short, unfit for flight ; antenne simple. 
GOMPHOCERUS Leach. Gomrnoceros Thunb. 8sp.  G. rufus Linn, 
Antenne clavate. Steph. 6. pl. 28. f. 6. 
TETRIX Latr. Acrypium Fab. 3sp. G. subulatus Linn. Curt. 439. 
Prothorax produced behind over the abdomen; tegmina very minute; wings 
ample. 
OrperR IV. THYSANOPTERA Haliday. 
Note. — The foilowing is an abstract of the arrangement of these insects given by 
Mr. Haliday in the 15th Number of the Entomological Magazine. 
Stirps and Family 1. Tusutirera. Antenne 8-jointed; no borer in the female. 
Gen. 1. Phleothrips. 
Sect. a. Ocelliand wings 0. Isp. P. pedicularia. 
Sect. aa. Ocelli 3; wings complete or abbreviated. 
Subs. s. Sides of head parallel. 5 sp. P. aculeata Fab. 
Subs. ps. Sides of head converging in front. 2sp. P. coriacea. 

* Latreille gives the name of Cidipoda to those locusts which are destitute of a 
prosternal point, calling the larger species which have a strong point Acrydium. As 
the migratory locust belongs to the former group, it is proper that it should retain 
the name of Locusta, whilst the rejection of the name of Acrydium, for the reasons 
given in the body of my work, has rendered the adoption of another name necessary 
for the larger species, and which I have elsewhere named Rutidoderes. 
