98 



PTILIAD.E. 



mediate altitudes and within the sylvan districts; but it has not 

 yet been observed in any of the other islands. I am informed by 

 Mr. Matthews that the Madeiran specimens which he examined are 

 identical with the particular state which Motschulsky separated from 

 the atomaria under the name of quadrata, but which he believ 

 cannot be upheld as specifically distinct. Indeed, judging from a 

 note now before me, Mr. Matthews appeared to think it far from 

 improbable that the very slight differential characters which serve to 

 separate the quadrata from the atomaria proper are in reality but 

 sexual ones ; for he remarks " I have again looked into the quadrata- 

 question, and I am inclined to think that quadrata and atomaria 

 are but sexes of the same species ; the difference between them is 

 analogous to, and not greater than, that which exists between indi- 

 viduals of the fascicularis." 



275. Acrotrichis anthracina. 





Trichopteryx anthracina, Matth.,inEnt. Month. Maff.ii.35 (July 1865). 

 Acrotrichis anthracina, Woll., Append, huj. op. 14. 



Habitat Canarienses (G?om.), a DD. Crotch lecta. 



Three examples of this small Canarian Acrotrichis were taken by 

 the Messrs. Crotch in Gomera ; and Mr. Matthews, who detected 

 them amongst their other material, makes the following observation 

 concerning them : " I feel convinced that they represent a new species 

 belonging to the atomaria-grouip (i. e. with a wide thorax and atte- 

 nuated elytra), but differing from all in having nearly black antennae, 

 a jet-black colour, and a very minute size*; and moreover their 

 sculpture is remarkable, and very distinct. I do not think it pos- 

 sible to refer them to any known species." 



276. Acrotrichis Wollastoni. 



Acrotrichis fascicularis, Woll. [nee Herbsf], Cat. Can. Col. 103 (1864). 

 Trichopteryx Wolla,stom,Math.,in!!nt. Month.Mag.i. 248(Aprill865). 

 Acrotrichis Wollastoni, Woll., Append, huj. op. 14. 



Habitat Canarienses {Can., Ten., Gom., Hierro), vulgatissima ; per 

 regiones intermedias praesertim sylvaticas sub quisquiliis foli- 

 isque dejectis. 



Abounds in the intermediate altitudes of the Canarian Group, 

 where it occurs in much the same kind of places as A. atomaria, 



* Mr. Matthews further states, under his published diagnosis, "This species 

 is the smallest I have seen with the thorax largely dilated towards the base, and 

 the posterior angles much produced." 





