AKT. 14 TEEMITES FROM AMAZON BASIN — SNYDER 36 



Antenna yellow to light yellowish-brown, 11-12 segments, seg- 

 ments become longer and broader toward apex, with long hairs; 

 third segment (if 11 segments) elongate, clavate, longer than second 

 or fourth ; fourth shorter than second segment ; if 12 segments, third 

 short, ring-like, shorter than second but subequal with fourth 

 segment. 



Pronotum jellow-brown, saddle-shaped, anterior margin short, 

 steep, not emarginate, with short hairs. 



Legs yellowish, elongate, slender, with long hairs. 



Abdomen with tergites light yellow-brown, with microscopic 

 hairs and a row of long hair at the base of each t^rgite lacking in 

 the middle of the abdomen ; cerci fairly elongate. 



Measure m ents. — 



I.eugth of eutire soldier, 2.4(»-2.;)0 mm. 



Length of bead with nasu.s, 1.10-1.20 mm. 



Length of head without uasus (to auterior), 0.7!j mm. 



Length of nasu.s, 0.40 mm. 



Lengtli of pronotum, 0.12 mm. b 



Length of hind tibia, 0.65 mm. 



Width of head, 0.65 mm. 



Widtli of pronotum, 0.30 mm. 



N. (C.) jmlliceps Snyder is a dark colored', ' small species, with 

 nasus not robust. ' ' 



Type locality. — Cachuela Esperanza (Beni-Siver), Bolivia. 



Described from a series of soldiers collected with workers at the 

 type locality in March, 1922, by Dr. W. M. Mann ; with this termite 

 were soldiers and workers of Arimtennes {A.) albidus Hagen. 



Type, soldier.— Cut No. 2TG657 U.S.N.M. 



Subgenus Diversitermes Holmgren 



Silvestri's remarkable species diversimiMes was placed in this 

 subgenus of Nasutiternies Banks by Holmgren in 1912. Holmgren 

 had found the intermediate soldier caste in Bolivia; the species 

 has been previously known to have only two types of soldiers. The 

 major soldier has an unmistakable large rounded head and the inter- 

 mediate soldier has a head constricted in the middle, of somewhat 

 of the shape of an hour glass, as in Velocitermes Holmgren (pi. 3, 

 figs. 1-4). 



This subgenus is confined to South America; two species have 

 been described — diversimiles Silvestri and castaniceps Holmgren. 



NASUTITERMES (DIVERSITERMES) MELANOCEPHALUS, new species 



Queen (first form). — Head blackish, dark reddish-brown near 

 base of antennae, with dense short hairs and quite a few long hairs, 

 wider than in N. (Diversifeiviies) diversimiles Silvestri. Fonta- 



