Species of Porphyrops. 353 
4, neglectus. —— 41,1, 
5. copiosus, — 2. 
{| All these occur about Holywood.] 
PORPHYROPS. Meig. IV, 45, CXXVII. 
A. Antennis apice setigeris, (Mas) articulo tertio valde elongato setd 
brevissimd, Metatarso postico basi subtus uncinato. Plectropus, mihi. 
1. pallipes. Meig. IV, 55, 23. 
Fabr. Syst. Antl. 266, 2. 
Varietatem feminz segmento tertio immaculato qualem et ipse vidi 
Meigen pro genuina habuit. 
4| A common and diffused species.] 
var. (. obscure viridi-zneus pedibus ferrugineis, femoribus tibiisque 
posticis apice nigris, abdomine basi maculis Iateralibus flavis, 
alis obscuris. 
Ihave several males of this variety from the west of Ireland, and none 
of var. a. from the same locality. They may probably be distinct species. 
2. pumilus. Meig. [V, 53, 17. 
q A single female near Holywood.] 
3. decoratus. P. obscure viridi-zneus, pedibus ferrugineis, femoribus 
tiblisque posticis apice tarsisque nigris, alis cinereis. 
Long. corp. I. 
Frons chalybea nitida : Facies sub antennis cyanea: Hypostoma candi- 
dum: Coxe antice pedesque ferruginei, femora anteriora nonnunquam 
fusco-lineata. Femina major colore obscuriore, pedibus lutescentibus 
obsoletius infuscatis, a Rhaphio macrocero ? vix nisi antennarum forma 
distinguenda. 
4] Not rare near Holywood in moist meadows among plantations. ] 
B. Antennis apice setigeris, (Mas) Hypostomate angustissimo lineari. 
Perithinus, mihi. 
4. riparius. Meig. IV, 54, 18. 
Feminam Meigen descripsit loco Iaudato. 
Mas. Tarsorum anticorum articulo 2* arcuato, 3ti° et 4'° brevissimis. 
Antennarum articulo 3° Jongiore quam femine, Frons obscure 
