374 CANABIAN COLEOPTERA. 



cedes from the ordinary Thylacites in having its fiiniciilus-joints free 

 from rigid setse, its prothorax comparatively narrow and cylindric, 

 and its third tarsal joint very much less expanded or bilobed. From 

 the CiieorJiim, however, it may immediately be known by, inter alia, 

 its rostrum being less deeply excavated at the tip, by its scuteUum 

 not being visible, and by its surface being studded with long and 

 erect hairs. Its legs also are slenderer than is the case in the repre- 

 sentatives of that group, — the tibiae, particularly however the ante- 

 rior ones, being (although more evidently fringed with minute spi- 

 niiles) less dilated at their extreme apices. 



570. Thylacites obesulus, n. sp. 



T. densissime albido-squamosus et pilis longissimis suberectis moUi- 

 bus parce obsitus ; capite prothoraceque vix subochraceo-tinctis, 

 hoc angusto, subcylindrico, mox ante basin transversim constricto, 

 longitudinaliter vix sublineato-macidato ; elytris valde convexis, 

 rotundato-subquadratis, irregulariter nigro-maculatis, maculis 

 valde irregularibus plus minus confluentibus et versus sutiiram 

 longitudinahter dispositis ; antennis pedibusque rufo-ferrugineis, 

 illis subcalvis, his albo-squamosis ; tarsorum articulo tertio vix 

 dilatato. — Long. corp. lin. 2|. 



Habitat Lanzarotam ; in aridis maritimis arenosis prope oppidum 

 Arrecife, mense ApriH a.d. 1859, exemplar unicum cepi. 



A single specimen only of this very distinct Thylacites has hitherto 

 come beneath my notice. It was captured, during April 1859, at the 

 roots of sand-plants, on a sandy slope behind the sea-beach of Lan- 

 zarote, about a mile to the south of Arrecife. 



Genus 218. SITONES. 

 Germar, Im. Sjx'c. i. 414 (1824). 



571. Sitones gressorius. 



Curculio gressorius, Fab., Eat. Si/st. i. ii. 465 (1792), 

 Sitones gressorius, Schdn,, Gen. et Spec. Cure. ii. 97 (1834). 

 Sitona gressoria, Bridle, in Webb et Berth. (Col.) 72 (1838). 



, Woll, Ins. Mad. 403 (1854). 



, Id., Cat. Mad Col. 119 (1857). 



Habitat in TenerifFa, Gomera, Palma et Hierro, super folia Liijpini 

 termis Forsk. hinc inde sat abundans. 



As in Madeira, the S. gressorius of Mediterranean latitudes appears 

 to be attached in these islands to the Lupines (Lupinus termes, Forsk.), 

 which are often cultivated at intermediate elevations. Under such 

 circumstances I have captured it near Las Mercedes and about 

 Orotava in Teneriffe ; in the Barranco above 8'" Cruz of Palma ; 



