12 MANDIBULATA ORTHOFTERA. 



Not common ; found occasionally in August and September at 

 Darenth and Birch woods, and also near Hertford, and in the New 

 Forest and in Dorsetshire. 



Genus II.— MICROPTERYX* mihi. 



Body moderately stout, glabrous; eyes scarcely prominent^ sessile; head 

 gibbousj front broad, obtuse, rounded ; antennas very slender, moderately 

 long, inserted in a cavity between the eyes, the basal joint short and robust, 

 second small ; thorax somewhat flattened above, the sides suddenly and 

 considerably deflexed, rounded behind, the posterior and lateral margins 

 elevated; elytra rather short and incumbent, or longish and deflexed, 

 ocellated in the males, sometimes appearing as a minute scale in the females, 

 at others nearly as ample as in the males ; wings none, or rudimentary ; 

 abdomen gibbous beneath, furnished at the apex above with two short acute 

 processes, in the males beneath with two others, and in the females with an 

 incurved ovipositor. 



The insects of this genus may be recognized from the foregoing by 

 having the elytra nearly as long as the abdomen, combined with a 

 broad obtuse front, with the eyes scarcely prominent, and sessile : 

 they frequent grassy places, and, from the brevity of their wings, 

 they are found on the ground. Anisoptera, having been previously 

 published, I have employed a new appellation here. 



A. Elytra abbreviated and incumbent in the males ; wanting in the females. 



Sp. 1. aptera. Grisea, capite thoraceque Iwvihus, lined utrinque laterali femori- 

 busqiie posticis extus vitid longitudinali nigris, elytris maris brevissimis, 

 fceminw nullis. (Long. corp. $ 7 — 8; ? ovip. incl. 10 — 12 lin.) 



Lo. aptera. Fabricius.—Kc. aptera. Steph. Catal. 300. No. 3305. 



Griseous, or fuscous-brown; head large, smooth, broad, and rounded in 

 front; antennae longer than the body, testaceous, with the basal joint 

 brown ; thorax smooth, subconvex above, with a broad black streak on 

 each side extending from the eyes to the hinder margin ; elytra of the male 

 very short, incumbent, the left one with a thickly veined opaque space, and 

 the right one wdth a round pellucid space ; female with two rounded flat 

 scales in lieu of elytra, and both sexes destitute of wings ; abdomen 

 yellowish beneath ; ovipositor in the female short, falcate, fuscous ; posterior 

 femora with a black streak at the base without. 

 Not common : I have taken it in a wood at Hertford, and also 



near Darenth in September. I have also obtained it from the New 



Forest. 



* fiiKpog parvus, Ttrepov ala. 



