APPENDIX. 47 



Acalles senilis. 



A. precedent! similis, sed paulo minor, rostro (in utroque sexu) sub- 

 graciliore et vix levins punctate, in maribus sensim breviore, pro- 

 thorace etiam rugosius punctate, elytris postice vix minus breviter 

 coarctatis, antice magis suffuse albido-brunneo squamosis, necnon 

 ante fasciam postmediam parte central! nigrescentiore, magis de- 

 terminata (sed parva), ssepius ornatis, antennis tarsisque paulo 

 clarioribus (laete rufo-ferrugineis), his sensim gracilioribus. Long, 

 corp. lin. 2-3. 



Acalles senilis, WolL, Cat. Can. Col. 288 (1864). 



Habitat in Gomera et Hierro, a meipso semel tantum sed a DD. 

 Crotch sat copiose in ligno Fid vetustse deprehensus. 



A single (small) example of this Acalles was taken by myself, 

 during February 1858, near Yalverde, in Hierro ; but the species has 

 since been found, rather abundantly, by the Messrs. Crotch, in that 

 island and Gomera, in the latter of which they bred a considerable 

 series of it from the rotten wood of an old fig-tree. It is very closely 

 allied to the A. fortunatus ; nevertheless, apart from its difference of 

 habit (that insect being attached to the Euphorbia piscatorial), it has, I 

 think, sufficient characters of its own (even though variable in them- 

 selves) to remove all doubt as to its specific distinctness. Thus it 

 is on the average a little smaller than the fortunatus ; its rostrum (in 

 both sexes) is just perceptibly slenderer and less deeply punctured, 

 and in the males appreciably shorter ; its prothorax when denuded 

 of the scales will be seen to be even still more roughly punctured ; 

 its elytra are rather less shortly contracted behind, more uniformly 

 clothed with whitish-brown scales in front, and with the dark ones 

 which bound (anteriorly) the postmedial hastate fascia both blacker 

 and more concentrated (so as generally to form a small, central, 

 more or less conspicuous postmedial patch) ; and its antennae and feet 

 (the latter of which are perhaps somewhat slenderer) are usually of 

 a clearer or more testaceous hue. 



Genus TOKNEUMA. 

 Wollaston, Ann. Nat. Hist. v. 453 (1860). 



Corpus parvum, angustulum, subovato-fusiforme, subtus late longi- 

 tudinaliter impressum (i. e. per metastermim abdominisque seg- 

 menta primum et secundum late concavum), ubique (subtus et 

 supra) granulis (aut potius squamis granuliformibus) magnis valde 

 depressis scabrosis tectum, sed baud (nisi oculo fortissime armato) 

 setosum : capite in cavo prothoracico usque ad rostri basin im- 

 merso ; oculis nullis ; rostro fere ut in gen. Acalles, sc. ad basin 

 leviter rotundato-subdilatato et superne quasi capite articulato, 



