578 CANARIAN COLEOPTEKA. 



(Subfam.V. XANTHOLINIDES.) 



Genus 321. XANTHOLINUS. 



Dahl, Emydop. Method, x. 475 (1825). 



881. Xantholinus marginalis. 



X. niger, elytris (vix subseriatim punctatis) Isete riifo-testaceis ; ca- 

 pite magno, basi subrecte truncato, sat dense et profunde punctato 

 punctulisque minutissimis intermediisirrorato; pro thoracis margin e 

 postico late et laterali angustissime rufescentiore, scriebns doi-sali- 

 bus 8-11-pimctatis; abdomine, prsesertim postice, rufescentiore ; 

 antennis rufo-fuscis ; pedibus testaceo-rufis. — Long. corp. lin.3-3|.- 



Xantholinus marginalis, Wall., Trans. E)it. Soc. Loncl. i. 187 (1862). 

 Habitat in Lanzarota et Fuerteventura (aut saltern in ins. parva 



adjaeente " Lobos " dicta), caules Eupliorhiarum putridos destruens. 



In its brightly rufo-testaceous elytra, this beautiful Xantholinus 

 " has [as I stated in my Paper, above alluded to, " on the Eupliorhia- 

 infesting Coleoptera of the Canary Islands "] much the colouring and 

 general aspect of the common European X. glahratxis ; but it is 

 smaller than that insect, with its head and prothoracie series much 

 more densely punctured, with the margin (particularly the hinder 

 one) of its pronotum diluted in hue, and with its elytra, abdomen, 

 and legs respectively paler. It is very rare, and (so far as observed 

 hitherto) quite peculiar to the damp, rotting EttpJiorbi a -stems — 

 among which it was taken by Mr. Gray and myself, on the Risco, in 

 the north of Lanzarote, during January 1858 ; as well as by myself, 

 on the 28th of March of the following year, in the little island 

 of Lobos, off the extreme north of Fuerteventura." 



882. Xantholinus hesperius. 



Xantholinus Hesperius, Erich., Ocn. et Spec. Staph. 329 (1839). 

 , Woll, Ann. Nat. Hist. vi. 100 (1860). 



Habitat Canariam, Teneriifam et Palmam, baud infrequens. 



The X. hesi'ierius of south-western Europe (and which occurs 

 sparingly at Madeira) is probably universal in these islands— though 

 hitherto I have observed it only in Grand Canary, TenerifFe, and 

 Palma (in the second of which it was found likewise by Dr. Crotch 

 and the Barao do Castello de Paiva, and in the third by Mr. Gray). 

 My Grand-Canarian specimens are from the region of El Monte, and 

 the Teneriffan ones from the Agua Garcia and the vicinity of Orotava. 

 Prima facie it is a good deal allied to the European X. linearis 

 (which, although common in the Madeiran Group, has not yet been 

 detected at the Canaries) ; but its head is a little larger and less ob- 



