CANARIAN COLEOPTEKA. 53 



but it seems to be the true la'vlc/atus of Zimmermann, Dejean's crassus 

 being the preceding (and rarer) species. Both of these Zahrl have 

 also been communicated by the Bariio do Castello de Paiva. 



(Subfam. XI. DITOMIDES.) 



Genus 28. ARISTUS. 

 (Ziegler) Latr., m(/ne Anhn. (ed. 2) iv. 387 (1829). 



83. Aristus subopacus, n. sp. 

 A. niger, subeyHndi-ico-oblongus, calvus, subopaciis, minutissime alu- 

 taceus ; capite prothoraceque parce (illo profundius) punctatis, illo 

 valde convexo integro (/. e. fronte vix impressa), hoc bre%d, ad basin 

 subito et valde constricto, ad latera grosse marginato (angulis ipsis 

 posticis rectis marginatis) ; elytris subparaUelis, leviter punctato- 

 striatis, interstitiis depressis fere impunctatis ; antennis ad apicem, 

 palpis tarsisque rufo-piceis. — Long. corp. lin. 5. 



Ditomus clypeatiis?, Brulle [uec Rossi], in Webb et Berth. (Col.) 57 

 (1838). 



Habitat in montibus Fuerteventurse, a meipso Aprili ineunte a.d. 

 1859 sub lapide in summo monte " La Atalaya " dicto semel lectus. 



The only specimen which I have seen of this very distinct Aristus 

 was captured, on the 4th of April 1859, from beneath a stone, on the 

 summit of La Atalaya (above Betancui'ia), — the loftiest mountain of 

 Fuerteventura. Whether it be the insect referred by M. Brulle to 

 the Ditomus clypeatus of Rossi, I am unable to say for certain, the 

 greater number of his types (supposed to be in Paris) being either 

 lost or inaccessible ; but, judging from the very few words which ho 

 says about it, I think that it most probably is. It differs, however 

 from the ch/peatus in being rather larger, more parallel (or cylindric), 

 and broader ; in its entire sculpture being very much finer ; in its 

 head being more convex, and free from foveas ; in its prothorax being 

 more strongly margined at the sides (even to the basal angles them- 

 selves), and with the anterior angles less porrect ; and in its surface 

 (which is totally free from pile) being more alutaceous and less 

 shining. Prima facie it has somewhat in common with the Ditomus 

 opacus, from the south of Algeria. 



(Subfam. XII. HARPALIDES.) 



Genus 29. CRATOGNATHUS. 



Dejean, Spec. Gen. des Col. iv. 46 (1829). 

 The four species described below, I am informed by Dr. Schaum, 

 are referable to the genus Cratognathus of Dejean ; and although the 



