30 IIETEROMERA. [Cisteld. 



Male witli the antennae longer and the last joint linear ; last ventral 

 segment of abdomen broadly subtruncate at apex. 



Female with the antennae shorter and the last joint oblong ; last ventral 

 segment of abdomen rounded at apex. 



On flowers, <fc<\ ; local, but common in many districts and generally distributed 

 tbroughout England, iilthough it appears to be more universal in the London and 

 Southern districts, and rarer in the north ; Scotland, local, maritime, Dee district. 

 I have no record from Ireland, but it almost certainly occurs. 



Z2RVX, Stephens. (Prionycltus, Solier.) 



This genus contains a few species, four of which are found in Europe; 

 they may be known by having the penultimate joint of the tarsi furnished 

 with a membranous lobe beneath; the antennee are filiform, and have 

 the third joint a little longer than the fourth ; the thorax is semicircular, 

 margined at base and sides, and with the posterior angles not produced; 

 the larva is found in the vegetable mould of decayed oak trees, and very 

 much resembles that of Cidela ceramboides ; it is of a yellowish- white 

 colour with the head ochreous and corneous (v. Westw. Class, i, p. 310). 



E. ater, F. ( $ melanarius, Germ.). Oblong-oval, broad, rather 

 convex, black, moderately shining, clothed with very short black pubes- 

 cence ; head thickly and distinctly punctured, antennae moderately long 

 and robust ; thorax transverse, almost semicircular, gradually rounded 

 from base and strongly narrowed in front, distinctly and not very closely 

 punctured, \\ ith the posterior angles somewhat obtuse ; elytra with rather 

 fine punctured striae, interstices distinctly and not very closely punc- 

 tured; legs moderately long, pitchy or pitchy ferruginous, with the tarsi 

 lighter ; the male is a little narrower than the female, and has the an- 

 terior tarsi very slightly dilated. L, 10-13 mm. 



In decaying willow, ash, &c. ; nocturnal in its habits, being found on the trunks of 

 willows, &c., at night; very local and, as a rule, rare; Coovnbe Wood, Forest Hill, 

 Walthamstow, Stockwell (Surrey), Chatham, Putney, Hammersmith (old apple 

 trees, formerly, S. Stevens); Windsor; Norwich; Cambridge; Leorninster (Mrs. 

 Hutchinson) ; Sherwood Forest (Sidebotham). 



MYCETOCHARES, Latreille. 

 (Mycetophila*, G-yllenhal; Ernocharis, Thomson.) 



This genus contains about twenty species, which are almost entirely 

 confined to Europe and North America ; of the ten European species 

 one only occurs in Britain ; the short and stout antennae and short 

 tarsi will easily distinguish the genus from Cistela, which it resembles 

 in having the penultimate joint of the tarsi not lobed beneath ; the 

 antennae have the third joint a little longer than the fourth ; the anterior 

 coxae are contiguous at apex, and the last joint of the maxillary palpi is 

 slightly securiform. 



