26 PROCEEDINGS OF THE NATIONAL MUSEUM vol. G8 



mens, in some, being much more projecting than in others. In N. 

 cornigera Motschulsky the distance of the ocellus from the eye 

 varies; indeed, I considered determining the specimens where 

 the ocellus was closer to the eye than twice its diameter as N. cay- 

 enn<E Holmgren, although the winged adult of this species is un- 

 known; the soldiers of these two species appear to be the same. 

 N. Banks, however, believes these two species may be the same, basing 

 the decision on the soldier caste alone. 



Of the 15 species collected by Dr. W. M. Mami, on the Mulford 

 Expedition, only three are new. 



NASUTITERMES (NASUTITERMES) ADUNCUS, new species 



Soldier (pi. 2, figs. 1-2). — Head light castaneous-brown, smooth, 

 shining, in profile nearly a straight line, slightly convex at base 

 of nasus and depression on top of head, flat, dividing into two bulg- 

 ing cheeks or lobes at median line, sides of head slightly asym- 

 metrical, two rows of long hairs, one on raised area at base of 

 nasus, the other near posterior margin, head broadly pear-shaped. 

 Mandibles with elongate sharp points. 



Nasus dark castaneous-brown at apex, elongate, conical and robust, 

 apex turned down, aquiline, with long hairs. 



Antenna yellow-brown, with 13 segments, with long hairs; third 

 segment elongate, clavate, longer than second or fourth segments; 

 fourth longer than second segment; fifth longer and broader than 

 fourth segment; sixth to ninth segments longer and broader, sub- 

 equal; tenth to twelfth shorter and narrower, subequal; last seg- 

 ment slender, shorter and sub-elliptical. 



Pronotiim yellow, anteriorly yellow-brown, saddle-shaped, ante- 

 rior margin emarginate, Avitli long hairs. 



Legs yellowish, tinged with brown, elongate, slender, with long 

 hairs. 



Abdomen with tergites yellow, tinged with brown, with a row 

 of long hairs at base tergites and also dense long (but shorter) 

 hairs on tergites ; cerci prominent, elongate. 



Measureiiients. — 



Length of entire soldier, 4.40-4.65 mm. 



Length of head with nasus, 2.10-2.15 mm. 



Length of head without uasu.s (to anterior), 1.30 mm. 



Length of nasus, 0.80 mm. 



Length of pronotum, 0.30 mm. 



Length of hind til)ia, 1.70 mm. 



Width of head, 1.30-1.45 mm. 



Width of pronotum, 0.75 mm. 



N. {N.) adunciis Snyder has a longer and broader head than 

 surinui7ien-^is Holmirren, fcAver hairs on the head and a more robust 



