THE CANADIAN ENTOMOLOGIST 



305 



The genus thus formed is a very homogeneous group, and is 

 apparently characteristic of the Charadriiformes (as that order is 

 understood by the more recent authors), especially of the Laro- 

 Limicohe. A single species, A. grandiculus (Kel.) is recorded from 

 Passerine hosts, but it is possible that these records are unnatural. 

 Only those species of which it is possible to be practically certain 

 have been referred to the genus, and doubtless others will later be 

 included. The list as given probably contains some synonyms, 

 but this cannot at present be definitely determined. 



The figures illustrating the genus are of A. uniseriatus (P.), 

 the genotype, and A. timidus (Kel.). 



Genus Heleonomus, n. gen. 



Figs. lOd, 12, 13e. 

 Menoponida? with very distinct 

 patches of spines upon the ventral 

 face of the posterior femora and upon 

 the 4th abdominal sternite, the spines 

 composing the patches very numerous, 

 closely crowded together and distinct- 

 ly smaller than those constituting the 

 general cha^totaxy. Thorax 3 - seg- 

 mented, the meso-thorax small. 

 Head of characteristic shape, the 

 lateral margins slightly swollen above 

 the bases of the antenna, the temples 

 prominent, reclined with the anterior 

 margin set at a very sharp angle to 

 the longitudinal axis of the body. 

 Lateral margin of the head with a 

 deep notch just before the eye, this 

 notch backed up by a large chitinous 

 area. Oesophageal sclerite and glands 

 present. Male genitalia apparently 

 quite characteristic, the basal plate 

 extremely long and slender, the para- 

 meres large and stout, with the distal 

 half curved sharply outward. A pair 



Fig. 12. — Heleonomus miandriiis (Kell.), 

 ventral side of male. 



