518 INSECTA MADERENSIA. 



districts of Porto Santo, diu-ing tlie winter and spring, — especially on the Campo 

 de Baxo, and the fiat ciiltivated ground behind the sea-beach. 



393. Helops lucifugiis, WoU. (Tab. XII. fig. 5.) 



H. ovatus latiusculus subdepressus ater nitidus confertim punctulatus, prothorace amplo antice 

 convexo ad latera vix rotundato, elytris subrugulosis profunde crenato-striatis, interstitiis apicem 

 versus minute seriatim tuljerculatis, antennis pedibusque fuscescentibus. 

 Var. /3. minor convexior, punctis striisque paulo profundioribus, prothorace vix ampliore quadratiore. 



Long. Corp. lin. 4r-6'~. 



Habitat in Portu Sancto, una cum prrecedente degens, sed paulo rarior ; var. /3. ad regionem supe- 

 riorem nisi fallor solam pertinet, qua in ascensu montis illius Pico de Facho dicti Aprili exeunte 

 A.D. 1848 pauca specimina sub lapidibus collegi. 



H. short-ovate, rather wide and depressed, deep shining black, neither so closely nor so deeply punc- 

 tulated as the H. infenius. Prothorax somewhat large in proportion to the size of the insect, 

 rather convexer in front than at the hinder margin (a peculiarity which is especially apparent in 

 the male sex), more narrowed anteriorly than in the last species ; and with the sides consequently 

 not quite so itniformhj rounded. Elytra rather short, very slightly rugulose and deeply crenate- 

 striatcd, the strife having almo.st the appearance sometimes of being punctate ; the interstices 

 with the hinder tubercles small and rather more distinct than in the last species. Legs and 

 antenna more or less brownish-piceous or fuscescent. 

 Var. /3. smaller and more convex ; with the prothorax somewhat larger iu proportion and more 

 quadi-ate, being moreover as convex behind as in front ; and with the punctures and elytral strise 

 altogether a httle deeper than in the ordinary type. (The state peculiar, apparently, to the 

 higher elevations of Porto Santo.) 



Also a weU-niarkcd species, and, like the last, peculiar to Porto Santo. It may 

 be knovm by its shortened ovate form, comparatively broad outline, and by its 

 deep black, shining, rather depressed, and somewhat lightly punctured surface. 

 It is found in company with the H. infer nits on the sandy plains of a low elevation, 

 but is apparently the scarcer of the two. There is a state (correctly referred I 

 believe to the present insect) which I would regard as the moimtain variety, in 

 which the body is slightly smaller and more convex, the scvJpture deeper, and the 

 prothorax a little larger in proportion and more quadrate, than in the ordinary 

 type. The only specimens which I possess of this particular modification were 

 captured by myself, in April 1818, on the ascent (so far as I can recollect) of the 

 Pico de Facho, — about midway between the town and summit. 



394. Helops congi'egatus, WoU. (Tab. XII. fig. 6.) 



H. subovatus piceus nitidus coufertim punctulatus, prothorace ad latera subrotundato, elytris rugu- 

 losis profunde crenato-striatis, interstitiis apicem versus seriatim tuberculatis, antennis pedibusque 

 plus minusve ferrugineis. 



