1874. 221 



In tlie entire absence of red coloration, this species agrees with 

 T. alhq)es, Thorns., and it has a considerable resemblance to Emphftus 

 tener, Fall. (pnteUafus, Kl.). 



I have only seen one example, which was taken three years ago 

 on tlie 2()th of May, at Kenmuir Bank, on the Clyde, above Glasgow, 

 probably by sweeping herbage. 



Nematus gkaminis, up. n. 



JV. ni(/er, nitidus, pedihus alhidis, femorihus 4 anticis 'pro parte, 



posticis fere fotis, tarsis posticis flbiarumque apicihus nigris. AIcb liya- 



lince, costa albida, stigmate fusco. Abdomen subtlis albo-virescens. ? , 



Long. 2f, alar. exp. of Hn. 



Antenna3 black, finely pubescent, a3 long as the body ; head black, pubescent, 

 and finely punctured above and in front ; labruni blackish or greenish-white ; palpi 

 fuscous at the base, remainder whitish ( ? greenish- white when fresh) ; thorax black, 

 shining, minutely punctured above, covered with white down underneath ; tegxilee 

 white ; pronotum thinly edged with white ; feet covered with a white pubescence ; 

 coxae white, anterior black at the base ; four anterior femora sordid white, irregularly 

 encircled with black from near the extreme base to the middle ; the second pair with 

 more black than the first ; posterior pair black, with the base white ; tibiae white ; 

 the posterior black at the apex ; tarsi white, slightly fuscous at the joints ; posterior 

 black ; wings hyaline, iridescent ; costa whitish, stigma fuscous or fuscous-black ; 

 nervures fuscous-black, pale at the base ; abdomen black above, the extreme apex 

 greenish-white ; imderneath whitish-green, the apex black and pdose : the saw is 

 curved at the base, its back rather straight, and with 17 or 18 waved teeth. 



Some variation exists in the amount of black with which the 

 femora are marked, at least, among bred specimens. 



Larva : head green, a little smaller than the second segment, flat 

 in front, with a fuscous tint, a darker line dow^n the centre ; eye 

 spots black ; mouth brownish-black ; feet and claspers glassy-white ; 

 body cylindrical, entirely grass-green, covered with longish hairs, 

 the sides slightly overhang the feet. Length 8 — 9 lines. 



Food plant, low grasses. 



The pupa is of a lighter green than the larva, with the wrings, 

 antennje, and feet glassy-white. 



The larva? are very irritable ; and, when touched, lash the body 

 about furiously. The cocoon is of the usual Nematus form, and, in 

 confinement, is spun against the sides of the breeding jar, or between 

 the blades of grass. I have taken the fly as early as the 26th April ; 

 the larva about the middle of June ; and have reared the imago at the 

 end of July. Possibly t^vo broods occur. The species is not un- 

 common in the Glasgow districts ; and it has been taken near 

 Aberdeen by Mr. J. W. li. Traill, and at St. Albans by the 

 Kev. T. A. Marshall. 



