80 SPH^RIDIAD^E. 



Fam. 7. SPB^BBEDIAMS. 



Genus 68. CYCLONOTUM. 

 (Dejean) Erich., Kaf. der Mark Brand, i. 212 (1837). 



238. Cyclonotum orbiculare. 



Hydrophilus orbicularis, Fab., Ent. Syst. i. 184 (1792). 

 Cyclonotum orbiculare, Erich., loc. cit. 214 (1837). 

 Ccelostoma orbiculare, Brutte, in Webbet Berth. (Col.} 58 (1838). 

 Cyclonotum orbiculare, WolL, Cat. Can. Col. 93 (1864). 



Habitat Canarienses (Fuert., Can., Ten., Oom., Palma}, in aquis 

 vulgaris. 



The common European C. orbiculare is probably universal through- 

 out the Canarian archipelago, in all the islands of which, except Lan- 

 zarote and Hierro (where, however, it most likely exists), it has been 

 taken plentifully. Although so abundant at the Canaries, it is 

 somewhat singular that it has not been detected yet in the Madeiran 

 Group. 



Genus 69. DACTYLOSTERNUM. 



Wollaston,/na. Mad. 99 (1854). 



239. Dactylosternum abdominale. 



Sphaeridiuni abdominale, Fab., Ent. Syst. i. 79 (1792). 

 Coelostoma abdominale, Brutte, in Webbet Berth. (Col} 58 (1838). 

 Dactylosternum Roussetii, WolL, Ins. Mad. 100, tab. iii. f. 1 (1854). 



, Id., Cat. Mad. Col. 32 (1857). 



abdominale, Id., Cat. Can. Col. 94 (1864). 



Habitat Maderenses (Mad.) et Canarienses (Can., Ten., Gom.), pu- 

 trida varia in inferioribus destruens. 



An insect of Mediterranean latitudes, and widely spread over 

 these Atlantic islands. Possibly, indeed, it will be found to be almost 

 universal, its habitat, amongst putrid substances generally (whether 

 vegetable or animal), enabling it to attach itself to many different 

 kinds of localities. It is found usually at low elevations, about the 

 towns and gardens. Thus at the Madeiran Group it is occasionally 

 common in the immediate vicinity of Funchal, amongst filthy rejecta- 

 menta (such as the empty shells of crabs, &c.) in the neighbourhood 

 of the drains and sewers ; whilst at the Canaries it more often 

 attacks the putrid leaves of the Prickly Pear (Opuntia Tuna, Mill.) 

 which have been thrown away to rot, as well as the various accumu- 

 lations in the yam -grounds. In such like places it has been observed 

 hitherto in Grand Canary, Teneriffe, and Gomera. 



