246 INSECTA^ COLEOPTERA. 
Gyllenhal’e name must be retained, as bis insect does not clasli with Graven- 
liorst’s j but, apart from the inexpediency of retaining two spp. of the same 
name in the same family, the fact remains that, when Gyllenhal described 
his Aleochara rujicomis^ there was another Aleochara rujicornis described by 
Gravenhorst, and not identical with his insect]. O. riparia^ Fairm., nec 
Thoms., is named mutata (Harold, I, c., considers that Fairmaire’s name 
should stand, as Thomson’s insect = Er.) ; O. Fairm., is 
referred, with slight reserve, to O. hrachyptera^ Steph., which is redescribed : 
Sharp, 1. c. p. 191. 
Homalota ; Scriba and Kraatz (B. E. Z. xv. pp. 149-161) record 14 spp. as 
German, of which 11 were described as new by Sharp in his revision of the 
British spp.: II. subsericea, Woll., probably = Muls. j aleocharoides, 
Woll., probably = cUenttda, Er. ; watet'hoitsn, Woll., is not, as Fauvel states, 
identical with cmeicolUSf Shp. ; Wollaston, Tr. E. Soc. 1871, pp. 291 & 292. 
II macroceraf Mots., nec Thoms., requires renaming : Balliou, Bull. Mosc. 
xliv. p. 163. 
Atheta {Homalota) coracina^ Sahib. : J. Sahlberg (Not. Fenn. xi. p. 418) 
records this species as copulating in the snow in Lapland in May. He adds 
diagnostic characters for it, as compared with A. latiuscula, Thoms. 
Phlceopoi'a eorticina, Woll., = rej!>tows, Grav. : Wollaston, 1. c. p. 285. 
Placusa injimay Er., and Oligota rujicornis^ Shp., occur at Madeira j O. injiata 
and contempta, Woll., =iparvay Ktz. : id. 1. c. pp. 292 & 295. 
Gyrophcma powerij Crotch, z=punctieoUiSf Thoms. : Sharp, Cat. Brit. Col. 
p. 10. Both were published in the same year (1867) j and Crotch’s sp. ap- 
parently should have priority : Bye, 1. c. p. 63. 
Myllmia elongata^ Kr., nec Matth., is named kraatzi : Sharp, 1. c. 
New genera and species : — 
Diestota, Mulsant and Bey, Ann. Soc. L. Lyon, xviii. p. 168 (Op. Ent. xiv. 
p. 194). Besembles Silusa, but shorter, with intermediate coxm not approxi- 
mated, and the median plate of mesosternum short, scarcely prolonged to the 
half of the intermediate coxm, and widely truncate at its apex. I), mayeti, 
xid. 1. c. p. 170 (Op. p. 196), Cette. 
MyrmecocephaluSf Maeleay, 1. c. p. 134. Apparently allied to Tachyusa. 
M. cingidatus and bicingulus, id. ibid., Gayndah. 
Falagria longipes, Wollaston, 1. c. p. 284, Madeira. 
Pkytoms semilunaris, Muls. & Bey, 1. c. p. 149 (Op. p. 173), Cette j P. 
littoralis, Horn, Tr. Am. Ent. Soc. 1871, p. 331, New Jersey. 
Aleochara fuliginosa, M. & Bey, 1. c. p. 163 (Op. p. 187), Calais [? = kirbii, 
Steph,, algarum, Fauvel] j A. mastersi, Maeleay, 1. c. p. 136, Gayndah. 
Apteranillus raffraii, Fairmaire, Ann. Soc. Ent. Fr. (4) x. p. 371, Boghari. 
Myrmedonia australis, Maeleay, 1. c. p. 136, Gayndah j M.drusilloides, Solsky, 
Hor. Ent. Boss. viii. p. 163, Samarcand. 
Calodera lapponica, J. Sahlberg, 1. c. p. 416 ; C. (Ityocara) laticollis, Thom- 
son, ibid. p. 346. 
Tachyusa objecta, Muls. & Bey, l.c. p. 169 (Op. p. 183), Beaujolais; T. 
coracina, Maeleay, 1. c., Gayndah j T. cavicollis, Solsky, 1. c. p. 154, Samarcand. 
Oxypoda pectita, p. 187, edinensis, p. 188, verecunda, p. 189, tarda, p. 192, 
Sharp. Tr. E. Soc. 1871, Gt. Britain j O. analis, Maeleay, 1. c., Gayndah. 
Homalota jiavicollis pallidipennis, id. Gayndah ; H. Jilum, Muls. & 
