tlie Atlantic Cossonldes. 399 



pedibusque vix rufescentioribus ; antcnnls tarsisque brevibus ; 



articiilis funiculi inter se compactis, secundo reliquis (se- 



quentibus) baud longiore, capitulo ovato parvo minus abrupto ; 



tarsorum articulo antepenultimo minus dilatato, prsecedenti- 



bus vix latiore et obscure bilobo. 

 Long. Corp. lin. H. 



Habitat in ins. Ascension, a dora. Bewicke mense Aprili a.d. 

 ISCO captura. 



The present Pentarihrum differs from the English P. Huttoni, 

 not only in its smaller size, narrower outline, and more cylindric 

 body, but likewise in its broader, shorter and more deeply punc- 

 tured rostrum, more convex forehead and larger eyes, in its rather 

 more transverse scntellum, its straighter and more cylindrical pro- 

 thorax — the broadest part of which is at the extreme base (where 

 it is of the exact breadth of the elytra), and not just before it as in 

 that species, — and in its rather less rugulose elytra, which have a 

 somewhat less evident tendency to be separately rounded-off at 

 their respective apices. 



Many specimens of it were detected by Mr, Bewicke, during 

 April of 1860, "in the decayed wood at the bottom of some 

 boxes," which he suspects had been used for importing plants into 

 the island, — prohahly either " from the Cape of Good Hope or the 

 Mauritius." It follows, therefore, that the insect is but a doubtful 

 native of Ascension, and that its presence there may have been 

 only accidental. Still, its close affinity with the British species, 

 and its no distant relationship with the two Mesoxeni from Madeira 

 and Teneriffe, would make it at least milikely that so remote a 

 spot as the Mauritius should be its proper country, — a conclusion 

 which its admixture (at Ascension) with a single example of the 

 minute Cryphalus aspericollis, which also occurs in both the Ma- 

 deiran and Canarian groups, would not tend to invalidate. 



Genus Stenotis. (PI. 19, fig. 8.) 

 Woll., Ins. Mad. 316, tab. vi. f. 5 (1854). 

 Concerning the present genus I have nothing to add beyond the 

 remarks given in the " Insecta Maderensia." The excessively 

 narrowed outline, pallid hue, sub-pubescent and less hardened sur- 

 face of the extraordinary little weevil for which it was established, — 

 which, moreover, has its antennas inserted considerably behind the 

 middle of its (much porrected and slender) rostrum, its antepenul- 

 timate tarsal joint considerably expanded and bilobed, and its 

 prothorax and elytra straightly truncated (rather than sinuate) at 



