92 CANARIAN COLEOPTERA. 



not have admitted it into the present Catalogue, — having but too 

 good reason for suspecting that several of the insects recorded by M. 

 Bnille, from the very scanty collection of MM. Webb and Berthelot, 

 were brought by Mr. Webb from Funchal, and were afterwards 

 mixed up (whether inadvertently or by design I cannot tell) vdth 

 his material from these islands *. But since the B. spinosus has not 

 hitherto been detected in the Madeiran Group, and since I have no 

 grounds for concluding that the specimens from any other country 

 were amalgamated by Mr. Webb -ndth his Canarian ones, and since 

 moreover I have inspected his examples which still exist in Paris, I 

 am inclined to admit the species into this list. At the same time I 

 must state that I do so somewhat reluctantly, since the entire absence 

 of a single word from M. Brulle as to which of the seven islands it 

 was found in (if indeed in any of them) renders me totally unable to 

 record its "habitat." It is far from improbable, however, that it 

 may occur in the brackish streams and Sahnas of Lanzarote or Fuerte- 

 vcntura. 



Genus 56. HYDROBIUS. 

 Leach, Zool. MisceU. iii. 93 (1817). 



149. Hydrobius haBmorrhous, n. sp. 



H. ovalis, fusco-niger, nitidus, distincte (pra^sertim in elj^tris) et sat 

 crebre punctatus ; capite utrinque ante oculos, prothoracis limbo 

 plus minus conspicue ncenon elytrorum limbo plus mmus obscure 

 dilutioribus ; elytris stria sutiu'ali profunda (anticc evanescente) 

 impressis ; antennis ad basin palpisque (apice ipsissimo nigro ex- 

 cepto) testaceis ; pedibus rufo-piceis. — Long. corp. lin. 1-^-1 i. 



Habitat in aquosis Canarise Grandis, rarissimus. 



The present Hydrobius is about the size of the Madeiran H. Mar- 

 cliantice, but perfectly distinct from it, — as -ut-II be at once seen by a 

 reference to the diagiiosis given (in 1857) in my Madeiran Catalogue. 

 It is apparently very scarce, Grand Canary being the only island in 

 which I have hitherto detected it; where, during the spring of 1858, 

 I captured it sparingly at Teror, and about wet rocks in the moun- 

 tains of the interior, towards Tarajana. 



Genus 57. CHiETARTHRIA. 



(Waterhouse) Steph., III. Brit. Ent. v. 401 (1832). 



* That such was the case with the Scaritcs abbreviatus (^=di7nidiatus, Br.), the 

 Harpcdus distinfficendus and consentaneus, and perhaps one or two others, I have 

 already recorded my conviction. 



