104 (JUNE, 
magno, oculis parvis, palpis articulo ultimo triangulari, Ket tibiis omnibus 
apice longius bicalcaratis. 
1. T. salinus, depressus rufo-testaceus, tenuiter cinereo-pubescens, subti- 
liter punctulatus, capite thoraceque nitidis, illo magno basi emarginato, anten- 
narum articulo ultimo precedentes quatuor equante. Long. -21. 
Lec. An. Lyc. 5, 156. 
This curious insect was found on the shore of a salt lake in the northern part 
of the great Colorado desert. It runs very actively and frequently takes flight, 
like Cicindela or Bembidium. 
Reddish brown, with very fine cinereous hair. Head flat, quadrate, shining, 
finely punctured, posterior angles rounded, occiput channeled, margin almost 
acute. Thorax narrower than the head, a little longer than wide, trapezoidal, 
slightly narrowed behind, base finely margined, slightly foveate in the middle; 
disc flat, finely punctured; elytra not wider than the head, parallel, truncate at 
base and tip, opaque, very finely and densely punctured, dusky towards the 
base. Legs long, moderately slender; posterior tarsi nearly as long as the 
tibie. The male has the anterior tarsi a little dilated. 
2. T.alutaceus, elongatus, fere depressus, niger, subtilissime alutaceus, 
brevissime pubescens, capite postice subtruncato, thoraceque punctulatis, elytris 
obsolete punctulatis, antennis testaceis articulo ultimo precedentes duos 
zequante. Long. :1. 
Anthicus alutaceus Lec. An. Lyc. 5, 155. 
Found at San Diego, California. A much smaller specimen, with the head 
more rounded behind, was found at the Gila. 
Elongate, almost depressed, black, opaque, scarcely pubescent. Head large, 
slightly convex, finely punctured, base truncate, with the margin not acute, 
posterior angles broadly rounded. Thorax narrower than the head, trapezoidal, 
narrowed behind, base margined; finely punctured. Elytra scarcely wider than 
the head, truncate at base and tip, very finely rugous, and very obsoletely punc- 
tured. Posterior tarsi shorter than the tibiz. The last joint of the antenne is 
here only twice as long as the preceding, and the constriction is at its middle, 
so that it appears like two ordinary joints. It was not until I removed the 
mould very carefully, and counted the joints, that I became aware of the affinity 
with the first species. 
The Committee on the following by Dr. Woodhouse, reported in 
favor of publication in the Proceedings : 
Description of a new species of Ectopistes. 
By 8S. W..Woopuouss, M. D. 
Ecropistes margtnella, nobis. 
Form.—Bill short and slender, wings long and pointed, second quill distinctly 
longest, its general form resembling E. Carolinensis, but much more delicate. 
Dimensions.—From tip of bill to end of tail, total length of skin 9 3-10ths 
inches ; wing from flexure 5 4-10ths inches ; tarsus 73-10ths; bill total length 
6-10ths, from gap 7-10ths; tail 4 inches. 
Color.—Bill dark brown; upper surface of the head he’ mottled with 
black and light brown ; head. front of neck, back, and upper tail coverts, of a 
lightish brown; a brownish white band extends from each eye across the fore- 
head; one reddish brown from the anterior part of the orbit to the back of the 
head; throat very light brown inclining to white: the feathers of the lower 
portion of the throat are black, with a light brown margin, giving the appear- 
ance of circular bands of black and white; breast, belly, vent and under tail 
coverts light fawn; sides lead color; primaries dark brown; the first, second 
