Rhynehart — Life- History and Bionomics of the Flax Flea- Beetle. 601 



Crioceris atra, 



Chrysomela atra, . 

 Thyamis parvida, . 



Fab., Sys. El. l,p. 467. 88.— Gyll., Ins. Suec. iii (1813), 

 p. 526.— Allard, Ann.Soc. Ent. Fr. 3, viii (1S60), 

 p. 99.— Eedtenb., Faun. Aust. (1858), p. 943. 



Allard, Ann. Soc. Ent. Fr. 3, viii (1860), p. 99. '^ 



Steph., lllus. Br. Enfc. iv (1831), p. 317.— Mn. 298, 

 2344. 



Teindadylaparvula, Fond., Ann. Soc. Linn. Lyon, vi (1859), p. 258. 12. — 

 Allard, Ann. Soc. Ent. Fr. 3, viii (1860), p. 99. 



Longitarsus ater, . Gemm. and Harold, Cat. Col. xii (1876), p. 3502. — 

 Bargagli, Bull. del. Soc Ent. Ital. x (1878), p. 73.— 

 Sharp and Fowler, Cat. Br. Col. (1893), p. 30.— 

 Johns, and Halb., Beetles of Ireland, Proc. R.I A., 

 3, vi (1901), pp. 766-767.— Carpent. Econ. Proc. 

 R.D.S., i, 3 (1902), p. 152.— Id., ii. 6 (1913), p. 83.— 

 Leesb., Tijdschr., 25, p. 162. 



Longitarsus parvulus, Ptedtenb., Faun. Aust. Ed. i, p. 535, ed. ii (1858), 

 p. 943.— Bach. Kf. Fr. f. K u, M., Stschl. iii., p. 149. 

 8.— Heyd., Eeitter and Weise, Cat. Col. Eur. (1906), 

 p. 578.— Sehaum., Catal. Coleop. Eur. (1862), p. 

 113.— Tonilin and Sharp., Ent. M.M., 47 (1911), 

 pp. 241-250.— Carpent., E. Proc. E.D.S., ii, 12 (1916), 

 p. 226.— Kutsch., Wien. Ent. Mouats. 7, vi (1862), 

 pp. 223-4. — Heikert., In. Eeitt. Faun. Germ, iv 

 (1913), p. 198. 



3. — Identification of the Species. 



Longitarsus 'parvidus Payk. has long been familiar in the adult stage 

 to Coleopterists in Ireland and Europe generally. Specimens bred at 

 Coleraine and others received from Co. Cork were identified by Mr. J. N". 

 Halbert, of the National Museum, Dublin ; v/hile on another occasion 

 Mr. G. K. Blair, of the Natural History Museum, London, named specimens 

 submitted for identification. 



The other species of Longitarsus found in association with parvuhts in 

 Co. Derry were luridus Scop., atricillus Linn., melanocephahcs De G., suturalis 

 Marsh., and jacobea Waterh. Other species of flea-beetles, principally 

 Plectroscelis concinna Marsh., Pliyllotreta nemorum Linn., and Sphaeroderma 

 testacea Panz., were also to be found on or near flax plots, but neither they 

 nor the other species of Longitarsus could ever be seen attacking the seedlings. 



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