26 REV. J. E, HULL ON 



BELAUSTIUM, Heyden, 1828. 



Eyes 2, Body elliptical, elongate, not shouldered, 

 clothed with slender translucent setae, simple or 

 plumose. Dorsum not very convex. Post-thoracic 

 furrow present. Anterior sensillar area projecting 

 above the rostrum in a sort of nasus. 



Type : nmrorum, Herm. (= qimquiliarum, Herm). 



1. Dorsal trichomes plumose or serrulate .. ... 2 

 Dorsal trichomes nude ... ... ... ... 4 



2. Dorsal trichomes fusiform densely serrulate ... scopnlarium. 

 Dorsal trichomes normally filiform ... ... 3 



3. Apex of crista triangular... ... ... ... tardiim. 



Apex of crista more ot less rounded ... ... quisquiliarum, 



4. Dorsal trichomes rigid, spiny, acute ... ... riibripes. 



Dorsal trichomes normally filiform ... ... 5 



5. Apical pre-sensillar setee, several ... ... miniatum. 



,, ,, two ... ... ... harrisonii. 



„ ,, one only ... ... sabulosttm. 



32. Belaustium miniatum, Herm. 66, 67, 68. 



Rhyncholophus hirsutus, Geo. 



Apical part of crista hardly projecting beyond the 

 prodorsal margin, and bearing about 10 slender 

 setae. A form with pubescence a little denser than 

 the type, especially behind {Rhyncholophus hirsutus, 

 Geo.) has been referred to rubripes, Trou. which is, 

 I think, a mistake. 



Generally distributed in moss and detritus of all 

 kinds. I have even taken it from a squirrel's drey. 



Lancashire, Yorkshire, Cumberland, Ireland. 



33. Belaustium rubripes, Trouessart. 66. 



The spiny setae mark this species off from all the 

 rest. In front of the anterior sensilli there are 

 nine, exactly like those of the dorsum, 4 in a 

 transverse line, 5 marginal. 



Maritime or sub-maritime. Taken by Dr. Harrison 

 in Greatham marshes. Other British records 

 under this name should probably be referred to 32. 



