280 INSECTA MADERENSIA. 



levitcr rotundata. Pedes parum graciles subcontractUes : tibiis saepius (V. 8 e) simplicibus, sed 

 intcrdum (V. 7 b, 7 c) apice levdter dilatatis et in anticis (\ . 7 h) extus denticulatis : tarsis 4-arti- 

 culatis, articulis tnbus baseos minutis subaequalibus, quarto longissimo subclavato unyuiculis 

 simplicibus munito. 



The genus Cis may be readily kno^^^^ by the subcylindi-ical and more or less 

 glabrous bodies of the species which compose it, and by the structure of its an- 

 tennae and feet, — the former of which are but 10-articiilate, and have their clava 

 (although perfoliated) abrupt, and fui'nished with a minute tubercle at its tip ; 

 whilst the latter are made up of four joints only, the basal three being extremely 

 small. It may be considered as forming a very gradual passage between the 

 Ptinid(B and the Xylophagous Fseudotet.ramera : for whilst, on the one hand, it 

 evinces a close relationship with the ylnoiia (as its apically-bidentate mandibles, 

 its loosely-connected club, and its generally simple tibiae would, apart from 

 external featiu-es, abundantly indicate) ; yet, the almost obsolete inner lobe of its 

 (subsetose) maxillae, in conjunction with its elongated ligula, and the diminished 

 number of its antennal and tarsal joints, alike combine in pointing towards the 

 Toinicldce and Ilylesini, — in which the whole of these peculiai'ities, although more 

 developed, are amongst the most essential characters possessed. And indeed I 

 cannot but believe that the system, not uxifrequently adopted, which would remove 

 that extremity of the Fseudotetramera to a distance fi'om the Cissidce is an}i:hing 

 Init a natm-al one ; — and more especially so, since there are connecting links 

 (shortly to be noticed) which effect, even more evidently than Cts, a transition 

 between the groups. 



214. Cis Wollastonii. (Tab. \. fig. 8.) 



C. oblongo-subcylindricul^iceus subnitidus leviter subruguloso-punctulatus et subtilissime pubescens, 

 prothorace s-bquadrato, antice subtruucato necnon ad latera subrecto margiuato, hiuc inde 

 inaquaiiter rufescenti, elytrorum basi apiceque nifcscentibus, antennis pedibusque ferrugineis, 

 illarum clava infuscata. 



Long. Corp. lin. H-2. 



Cis Wollastonii, Mellie, in Giier. Jiev. de Zool. (2'^""' serie) i. 586 (1849). 



Habitat IMaderam sylvaticam, prsesertim inter 3000' ct 4500' s.m., sub cortice arborum laxo, hinc inde 

 non infrequens. ^ 



C. large, elongated and subcylindrical (being however a little narrowed anteriorly), not very convex, 

 piceous, a little shining, and rather sparingly clothed throughout with au exceedingly minute, 

 delicate, and decumbent cinereous pubescence (wliich however is scarcely perceptible except 

 beneath a powerful lens). Head large, but very slightly deflexed (and therefore a good deal 

 exposed), rounded and margined anteriorly, with a very faint transverse impression in front, and 

 obscurely convex in the centre of its forehead behind. Prothorax subquadrate (the sides being 

 nearly straight) ; truncated (or scarcely at all jiroduced) anteriorly ; finely and closely punctulated 

 (the punctures being shallow and not very well defined) ; the lateral edges very broadly margined, 



