18538.] 365 
less than half the length of the wings, which are pale, with the apex slightly 
fuliginous, and extending 1 line beyond the abdomen. Anterior feet flavous, 
tibial palm hirsute, with three terminal spines, internal angle with a slender 
tarsus (apparently bi-articulate) armed with two slender curved ungues. Me- 
dial feet and posterior femora variegated; posterior tibia with lamellar appen- 
dages as in X. apicalis. Abdomen flavous beneath and at the lateral margin, 
sides and apex brown. 5 lines long to the end of the wings. 
Fort Gates, Western Texas, Lt. H. Haldeman. 
Resembles X. apiealis Say, (which occurs on the Susquehanna) in general 
appearance, but it is smaller, and the prothorax is much less inflated. 
TERMES NIGRIcEPS Hald. Body, feet, trophi and antenne flavous. Head 
glossy black, sparsely hairy, globose pyriform, projecting anteriorly and ending 
in a long horn; antenne# 12-articulate; feet slender and hairy. Length 14 line. 
Soldier ? with the head larger, sub-globular, unarmed, pale polished brown, 
front and medial line impressed; antenne 14-articulate. Length 14 line. 
Western Mexico. 
This small species constructs nests apparently of cow’s dung, which are 
attached to the trunks of trees. Dr. Le Conte has seen this or an allied species 
in Central America. The specimens with the larger head are presumed to be 
the soldiers. 
Evumenes pensinvanica Hald. Black, with dilated impressed punctures. 
Hypostoma transversely truncate, with a marginal band of white; a white point 
at the posterior base of the antenne, basal articulation of the antenne with a 
narrow line of white. Abdominal peduncle small, with a narrow white band 
near its apex. Segments of the abdomen with a very narrow margin of white. 
Wings pale fuliginous. Length 54 lines. 
Pennsylvania. 
The smallest of our species known to me, and having the mesonotum more 
caeely punctate, and the white of the face forming a transverse band ante- 
riorly. 
The Committee on Mr. Girard’s descriptions of new Nemerteans and 
Planarians, reported in favor of publication. 
Descriptions of new Nemerteans and Planartans from the coast of the Carolinas. 
By Cuaries Grirarp. 
The species here described are all marine, and were mostly collected by my 
friend Wm. Stimpson, on the coast of South Carolina. Aware that I was en- 
gaged in researches concerning the natural hi tory of these animals, he very 
kindly placed them in my hands for description. 
The number of species thus added to the American fauna amounts to nine, 
four of which are new to science and two new to America. 
Many of the following descriptions were prepared with the assistance of notes 
made on the spot by Mr. Stimpson himself, and while the animals were stil! 
alive. ‘The coloration and general form are thus more correctly given than if 
these characters had been derived from the specimens as preserved in alcohol. 
There are two forms to which I would direct the attention of naturalists, as 
they must have an immediate bearing upon the question of the natural affinities 
of these families either with annelids or with molluscs. I allude to the genus 
Imogine amongst Planarians, and to the genus Stzmpsonia amongst Nemerteans. 
The former represents those gastropods which are provided with eyes at the top 
of their cephalic tentacles, and the latter the nudibranchiated acteons, with an 
expanded back. 
