84 Procecdinc/s of the Biological Societg of ]Va.s]iwgton. 
Kio (’iuira|)(‘, l*eru, 14 Septviiiher, 
li)l 1, one siH'ciiiien (C. II. T. Towii- 
nend). 
Tii})e. —Cat. No. J8,:>47, IC 8. Nat. i\Ins. 
This species is remarkable for the piljinentatioii of the wiog-meinhrane 
of the snhmaro'inal cell, a condition which has not been ohserv('d in any 
other simnliid. 
Simulium spinifer new species. 
Female .—Frons light grey prnino.se, broad above, innch narrowed to 
a point a short distance above the antennre, then again slightly widened; 
face light grey prninose. Anteniue hlnnt at ti[), three joints at l)ase yel¬ 
lowish ferrnginons, the others deep black. Scntnm greyish black, evenly 
clothed with tine brassy hairs, two indistinct black depres.sed longitudinal 
stripes, at anterior margin a paii' of largo triangnlar pearly white spots, 
a whitish sjiot on lateral margins before roots of wings, a large snbquad- 
rate grey patch before antescutellar area, this last triangularly j)rodnced 
into scntelhnn. Prothoracic lol)es dnll ferruginous, with a pearly white 
spot at the outer angles. Scutellum triangularly produced to an acute 
I)oint, obscurely ferruginous, with coarse erect black hairs on the posterior 
margins. Postnotum black. Jdenne black and l)rown, with a large 
whitish prninose patch. Abdomen dull black, the two basal segments 
dull brown and with long brassy hairs. Legs blackish, marked with 
white ; tihifc of fore legs with a whitish sheen along one side, the tarsi 
entirely black; middle pair with the base of the tibia and the basal two- 
thirds of the first tarsal joint whitish, the second and third tarsal joints 
pale at their bases; hind legs .with the tihim broadly yellowish near l)ase, 
the first tarsal white and with the apical fourth Idack, the .second joint 
pale at base. Claws .simple, produced tooth-like at the ba.se. Wings 
hyaline, the venation normal ; heavy veins on anterior portion of wing 
yellowish, the costa slightly darkened distally, the spines and hairs black ; 
thin veins un])igmented. llalteres jiale yellow, the stem dark at base. 
Length: Pody, about l.M mm. ; wing, 2 mm. 
Verrugas Canyon, Peru, o July, Did, three females {{'. Il.T. Town¬ 
send). 
7’//pe.—Cat. No. 18,;U8, U. 8. Nat. .Wus. 
Simulium seriatum new s])ecies. 
Female .—Occiput black; frons grey pruino.se, broad above, tapered 
regularly to the antennre, where it is narrowed almost to a point; face 
gi-ey i)ruinose. Antennm with two basal joints dull ferruginous yellow, 
the others blackish, clothed with whitish pubescence, the tip pointed. 
8cutum uniformly greyish black; vestiture of lustrous, yellowish white, 
hair-like .scales disposed in little groups which form indistinct longitudinal 
series. 8cutellum broad, transverse, concolorous with the mesonotnm, 
the pale scales directed transvers(4y; j)osterior margin with coarse, black 
(weet hairs. Postnotum black, prninose. Pleura; grey, prninose. Abdo¬ 
men black, tlu' posterior margins of tlu' .segments narrowly ])ale irrey. 
