PROCEEDINGS OF SOCIETIES. 
63 
Found on gravelly sea-coasts below high-water mark, walking with the wings 
half raised, and in rapid vibration, without taking flight. In such a situation I 
found, also, the empty puparia lying about, somewhat like those of a Chironomus. 
I have observed the insect only in blustery weather, as it happened, and could 
not find any trace of the female among them. When shut up in a box they sur¬ 
vived but a few minutes, and all the limbs curled up. 
. There are two other small Diptera known, which seem to bear an affinity to this 
species—viz., Corynocera ambigua , Zett. Ins. Lap. 856, 1, from the shore of an 
Alpine lake in Lapland; and Monodicrana terminalis, Loew Bernst. Fna. 32, an 
amber insect. 
Fam.—DOLICHOPIDJE. 
Dolichopus prsetextatus, pi. 2, fig. 5. 
Pallide viridi-ceneus , antennis nigris , arista glaberrima, pedibus jiavis , tarsis 
posticis fuscis basi jiavis , alis apice nigro-marginatis , alulis pallido-ciliatis , 
lamellis obtusis fuscis, Mas. (Metatarso postico mutico, ciliis genarum pallidis). 
Long 2\, Exp. 5 lines. Robust; brassy-green, with hoary bloom; the thorax 
faintly streaked in front. Face narrow, shorter than the eyes, silvery white; 
lower occiput with yellowish beard. Antennae black, short, third joint obcordate. 
Arista glabrous, arched, the penultimate joint as long as the third of antennae, the 
last twice as long, slender. Palpi black. Wings hyaline, the tip with a narrow 
black edge, the hind margin sinuated, the subcostal areolet long, the subapical vein 
sinuated, the discal veinlet straight. Alulae with pale fringe. Legs rather short, 
testaceous; coxae cinereous; femora below, the anterior pairs only at the base, 
ciliated with fine pale hairs ; the posterior ones above ciliated with black bristles; 
before the tip, in front, two spines on the middle, one on the hind thigh. Fore 
tarsus short, the metatarsus as long as the following three joints together; middle 
tarsus dusky at the joints, hind pair dusky, with only the base of the metatarsus 
yellowish; this is spineless and shorter than the following joint. Hypopygium, 
two-thirds of the length of the abdomen, and closely applied to the ventral surface ; 
aculeus shorter than it, internally bidentate, the tip produced into a straight spine ; 
next a forceps, with nearly linear arms, angulated near the tip; near the apex another 
forceps, with broader, somewhat curved, triangular lobes, pale, with dusky tip, 
extending beyond the lamellae, which are blackish brown, broad at the tip, obtuse, 
and slightly ciliated. The length of the subcostal areolets indicates an approach to 
Argyra. 
A single specimen found among the sea-reeds, on the sandhills of Rossbegh 
Point (Kerry), in July. 
Rhaphium flavicolle, pi. 2, fig. 6. 
Mg. Zw. iv. 56. 24.—Wlk. Ins. Br. i. 195. 1.— Pallidum , Ztt. 
Aphrosylus celtiber, pi. 2, fig. 7. 
Obscure schistaceus , femoribus apice posterioribus fere totis rufopiceis, antennis 
nigris; Mas, lamellis fuscis longe crinitis, tarsi anlici articulis 2 primis subin- 
crassatis. 
Long 2%, Exp. 5| lines. Dark slate-gray, head above and mesonotum 
blackish, the latter with two faint lighter streaks in front. Antennae black ; third 
joint conical, thickened at the base, twice as long as the two preceding together in 
female, yet longer in male. Arista about as long as the antenna, naked, thick 
at the base, very slender at the tip. Face ochre-brown; epistoma blackish, in male 
hoary. Proboscis black and glossy, except the wrinkled membranous space at the 
base in front. Palpi dusky ferruginous; outwardly silvered and naked in male, 
duller white, and with black pubescence in female. Beard yellowish, with some 
blackish hairs next the orbit. Prosternum at each side, with three black 
spines (as in A. raptor ). Wings sooty-hyaline, with blackish veins. Legs 
grayish black, the fore femora rufescent at the tip, the posterior femora almost 
wholly piceous; the armature of the legs as in A. raptor , the spur of fore tibia 
springing directly from the straight tip of this, under the thin, fluted, whitish, 
transparent edge. In the male, the fore metatarsus is gradually thickened to the 
