584 CANAKIAN COLEOPTERA. 



examples which I have seen having been captured by myself in Tene- 

 rifFe and Palma. My Teneiiffan specimens are from moist places in 

 the vicinity of S"* Cruz, Taganana, Las Mercedes, and Ycod el Alto, 



Genus 326. DOLICAON. 

 Laporte, EUul Ent. i. 119 (1834). 



892. Dolicaon nigricoUis. 

 D. apterus, subcylindi-icus, nitidus, niger, elytris (parce et leviter 



punctulatis) abdominisque segmentis ultimis testaceo-rufis ; capite 



prothoraceque parce sed parum profundo punctatis ; antennis pedi- 



busque rufo-testaceis. 

 Mas abdominis segmento sexto infra profunde inciso, quinto integro. 



— Long. corp. lin. 2|-3i. 



Dolicaon ruficollis, WolL, Trans. Ent. Soc. Land. i. 188 (1862). 



Habitat Lanzarotam et Canariam, vel sub lapidibus vel in truncis 

 Eupliorbiarum emortuis putridis degens. 



In aPaper "on \h.Q Eupliorhia-iuieaimg Coleoptcra" of these islands, 

 I stated that " the present Dolicaon appears to be very closely allied 

 to the D. ilhjvicus — with which indeed (judging from the diagnosis) 

 I should have united it, had I not been informed by Dr. Kraatz that 

 its head and prothorax are somewhat more lightly punctured, and its 

 antennfe a little shorter, than is the case in that species. It is not 

 impossible, therefore, that it may be but a geographical phasis of the 

 D. illyricus ; but, as I have no type of the latter for comparison, 

 I ^vill not venture to record it absolutely as such." It is not uncom- 

 mon in Lanzarote, where it occurs both under stones and beneath the 

 moist rotting bark of old Euphorbias ; and I took a single specimen, 

 during the spring of 1858, in the region of El Monte in Grand 

 Canary. In Lanzarote it was found also by Mr. Gray. 



893. Dolicaon ruficollis. 

 D. prtecedenti valdc afSnis et for.san ejus varietas insularis ; differt 

 solum (ut mihi videtur) corpore sa-pius paulo majore, prothorace 

 (ut elytris) testacco-rufo (hand nigro). — Long. corp. lin. 3|-3|. 



Dolicaon ruficollis, Woll, Trans. Ent. Soc. Lond. i. 189 (1862). 



Habitat in locis similibus ac prascedens, sed in Fuerteventura nec- 

 non in insula parva adjacente " Lobos " dicta, rarissimus. 



Possibly this may be but an insular state of the last species — from 

 Avhich it merely differs (so far as I can detect) in being a trifle larger, 

 and in having its prothorax (like the elytra) pale rufous instead of 

 black. I have taken it, sparingly, both in Fuerteventura itself and 

 on the little island of Lobos (off the extreme north of it) — in the latter 

 locality from within a rotten EujjJiorb I a -stem. 



