124 t'^"'»«' 



Foudras (Mou. p. 178) differentiates three varietal forms of 

 L. lateralis, 111., viz. : — 



Var. A. Macula margiuali Integra. 

 B. Macula marginali deficieute. 

 c. Tota pallida, 

 of which the last is probalily equivalent to our var. distincjuendus, Rye. 



{To he continued.) 



A NEW SPECIES OF OLIGOTA. 

 BY DAVID SHARP, M.A., F.R.S. 



OlIGOTA YTENBNSIS, sp. U. 



Niger. u)iteiinis peilihusque ruj/s, illaruw clava fusca ; minima, anfjusta, 

 siiliHitfaris ; eliiris thorace vix lutigioribus, fere angiistioribus. Lung, cor- 

 pore extenso, \\ mm., hit. \ mm. 



The smallest and most linear of our British forms, and readily 

 distinguished by the aborted vpings, they being smaller than the elytra. 

 The antennae are rather short, the club abinipt, the 8th joint being 

 considerably larger than the very short 7th joint. The head and 

 thorax are very shining. The elytra are intensely black, rather strongly 

 punctured. The last segments of the abdomen are only slightly paler 

 than the preceding. 



This very distinct little species may be placed between atomaria 

 and imsiUima ; it has much the appearance and the colour of atomaria, 

 but will be distinguished from it by a glance at the small elytra. It 

 is narrower and darker in colour than pusillima, and both atomaria and 

 ■pvsillima have elongate wings, whereas in ytenensis the wing is only 

 about the length of the elytron. The measurements of length given 

 by Gauglbauer for the species of this genus are too small ; he says 

 0.7-0.8 mm. for ijusillima, which insect, however, is larger than 

 ytenensis, the length of which, before contraction has occurred, is a 

 good deal more than 1 nun. 



0. yteneusis has occurred at Lymington in decaying sea-weed, but 

 is at preseut a great rarity. 0. atomaria — a common insect here — 

 occurs with it, as does Actinopteryx fucicola. I have also a specimen 

 from Edinljurgh, which I have no doulit is the same species, and 

 which I think was not found in sea- weed. 



Brockenhurst : 



May 'Srd, 1912. 



