CANARIAN COLEOPTERA, 43 



It is somewhat remarkable that, whilst the 0. glahratus is uni- 

 versal throughout Grand Canary, Teneriffe, and Hierro, it is repre- 

 sented in Palma by the present species, which occurs, in like man- 

 ner, at nearly aU intermediate elevations. The 0. palmensis may be 

 known from its ally by its larger size and broader outline, by its 

 rather browner, less shining and flatter surface, and by its elytra 

 being less acute at the shoulders, more finely striated, and with their 

 interstices (when viewed beneath the microscope) not only mirmtely 

 alutaceous but with the additional punctules so small as to be scarcely 

 perceptible. I have taken it, amongst leaves and rubbish, at the 

 base of the perpendicular rocks which form the sides of the Barranco 

 de S'* Cruz, as also on the ascent of the Cumbre above Buenavista, 

 and in the Barranco de Galga (towards the north-east of the island) ; 

 and it was likewise captured, during the spring of 1862, by Dr. 

 Crotch. 



71. Olisthopus glabratus. 



0. a3neo-niger, angustulus, subconvexus, nitidissimus ; prothorace 

 fere impunctato ; elytris oblongis, ad humeros aeutis, profunde 

 striatis, interstitiis sat distincte i)unctulatis, tertio punctis tribus 

 notato, limbo plus minus distincte pallidiore ; antennis, palpis 

 pedibusque paUido-testaceis, illis versus apicem obscui'ioribus. — 

 Long. Corp. lin. 2-3. 



Olistopus glabratus, Bi-nlle, in Webb ef Bei-th. (Col.) 56 (1838). 

 Habitat in Canaria, Teneriffa, Gomera et Hierro, in locis infe- 

 rioribus et intermediis, hinc inde baud infrequens. 



As may be gathered from what has been said, the smaller size, 

 narrower outline, darker hue, and more convex and shining surface 

 of the present OUsiJiopus, in conjunction with its more deeply striated 

 elytra (which are acuter at the shoulders, more brightly testaceous at 

 the sides, and have their interstices more distinctly punctulated and 

 Mwalutaeeous), wiU at once separate it from the last species. It is 

 universal throughout Grand Caiiary, Teneriffe, Gomera, and Hierro 

 (in the last of which it was likewise captured by Mr. Gray, and in 

 Gomera by Dr. Crotch), — occurring beneath stones, though not very 

 commonly, at low and intermediate elevations ; but it has not yet 

 been observed in either of the eastern islands of the Group*. 



* Amongst five examples of Olisthopus communicated to me in 1856 by Dr. 

 Heer of Zurich, and taken at tlie Canaries by M. Hartung, are four of the O. 

 elongatus, WolL, and one of the glabratus, Br. Tlie wliole were sent under the 

 latter name, and were stated to have come from Lanzarote ; but as M. Hartung 

 collected also in Teneriffe, I have not the slightest doubt that tlie specimen 

 of tlic glabratus was from that island, and had become accidentally mixed up, 

 afterwards, with those from Fuerteventura and Lanzarote. Nevertheless as I 



