116 MANDIBULATA. NEUROPTERA. 



labiad 3-articulate, the terminal joint large, ovate, compressed : head orbi- 

 cular, forehead depressed : eyes remote, ovate : collar distinct ; thorax 

 gibbous, tuberculated : wings deflexed, rounded, covered with a mealy 

 powder ; anterior ample, larger than the posterior, which are occasionally 

 Ismall ; all with three discoidal areolets : abdomen short, elongate-ovate : 

 legs moderate: tarsi 5-jointed, Larva ovate, conic, with short setose 

 antennse and legs. 



The insects of this genus at first sight resemble certain Homoptera, 

 especially the genus Aleyrodes, amongst, and near, which I had placed 

 the only three species that I have seen, the third of which differs 

 from the others in having the posterior wings much smaller than the 

 others : the genus was first characterized by Curtis, but I had 

 previously indicated it, having placed it amongst those families that 

 I stated in a note in Part II. of my Catalogue, p. 361. I had not 

 properly investigated : the larvse, according to the observations of 

 Mr. Haliday, resemble those of Hemerobius, and are broad, ovate, 

 acute, with short antennae, &c. and are probably aphidivous : the 

 imago differs from the Psoci in having the antennae distinctly 

 multiarticulate, the wings, &c. covered with powder, and the tarsi 

 5-jointed, 



Sp. 1. Tineiformis. Margaritaceo-'cinerea, opaca, abdomine riifo-ochraceo, 

 antennis hand corpore longitudinis, alis posticis mediocribus. (Long. corp. 

 J lin. ; Exp. Alar. 2| lin.) 



Aley. dubia. Steph. Catal. ii, 367. No. 9979. — Con. tineiformis. Curtis, f. 528. 



" Dead pearly grey, powdered : antennae not longer than the body, containing 

 about 25 joints ; superior (anterior) wings very ample; inferior (posterior) 

 small ; abdomen ochreous." — Curtis, I. c. 



Abundant, in June, in lanes near Hertford and Ripley, in fir 

 groves ; also taken in Norfolk, the New Forest, Dorsetshire, and 

 near Dover. 



Bp. 2. Aleyrodiformis. Margaritaceo-alba, opaca, abdomine piceo, antennis 

 corpore longioribus, alis posticis mediocribus. (Long. corp. 1 lin.j Exp. Alar. 

 ♦ lin.) 



Aley. gigantea. Steph. Catal. ii. 367. No. 9978. 



Pead pearly white, powdered; antennae piceous, rather longer than the body, 



with about 30 joints ; anterior wings ample ; posterior rather small ; 



abdomen pitchy ; legs pale, with the knees pitchy. 



Found, in July, 1827, near Ripley. 



