100 Mr. T. V. WoUaston on Additions to Madeiran Coleoptei'a. 



(rarius duabus) parva sublaterali nigro-ornato ; antennis pedibus- 



que pallido-testaceis. 

 Foem. elytro singulo fovea longitudinal! sublaterali media breviuscula 



sat profunda impresso. 

 Long. Corp. lin. 7- 

 Habitat Maderam australem : in cisterna quadam supra urbem Fun- 



chaleusem tria specimina nuper deprehensit Dom. Bewicke, 



The present Eunectes is closely related to a species* which I 

 have taken in the south of Grand Canary ; and both of them 

 differ from all the varieties of the widely-distributed E. sticticus 

 with which I am acquainted, in being larger and more oblong, 

 in having their pale portions of a more pallid-testaceous hue, 

 their surface more coriaceous and subdiaphanous, their elytral 

 fascise (apparently) obsolete, and their prothorax straighter at 

 the sides, as well as (in the female sex) a little more uneven, 

 subsinuated at its base, and with its extreme posterior margin, 

 within the hinder angles, more evidently raised. From its Ca- 

 narian ally, the E. subcoriaceus may be known by, inte?' alia, its 

 clypeus being more emarginated anteriorly, by the prothorax of 

 the female being less uneven, with the hinder angles less produced, 

 and the posterior margin (within the latter) less evidently raised, 

 in its scutellum being perhaps rather more obtusely rounded 

 behind, and in its elytral punctures being smaller and less dense 

 — those on the anterior portion being especially much more mi- 

 nute and remote. The submarginal impression, also, on the 

 elytra of its females is somewhat less deep and more abbreviated. 



It was discovered by Mr. Bewicke, in his garden, above 

 Funchal, where he captured three specimens, concerning which 

 I have lately received from him the following note : — " They 

 were taken in a deep tank ; and, from their habit of clinging to 

 the perpendicular walls of it, about two feet under water, they 



* I subjoin the following comparative diagnosis of this Canarian species, 

 which will sufficiently point out its distinctions from the Madeu-an one. It 

 may be characterized thus : — 



Eunectes subdiaphanus, n. sp. 



E. suboblongus, subdiaphano-coriaceus, pallide diluto-testaceus, clypeo 

 antice subintegro ; capite postice nigro et macula frontali magna antice 

 profunde bipartita ornato ; prothorace vitta transversa fracta nebuloso, 

 ad latera oblique recto, angulis posticis obtusiusculis, subinaequali, mar- 

 gine postico infra angulos distincte elevato ; scutello subtriangulari ; 

 elytris punctis magnis triplici serie et punctulis minoribus nigris notatis, 

 utroque maculis duabus minutis sublateralibus nigroomato; antennis 

 pedibusque pallido-testaceis. 



Foem. elytro singulo fovea longitudinali sublaterali media longiuscula valde 

 profunda impresso. 



Long. corp. lin. 7-72- 



Habitat Canariam Grandem australem, in aquis quietis ad EI Charco mense 

 Aprili A.D. 1858 a meipso repertus. 



