170 



BULLETIN 108, UNITED STATES NATIONAL MUSEUM. 



mentation, is 5^ mm. in length, and has 16 segments to one antenna, 

 the other being mutilated. There are no abdominal appendices 

 present. 



A male of the third form was fomid in a very large colony of R. 

 tibialis collected by B. T. Harvey at Colorado Springs, Colorado, on 

 April 16, 17, and 19, 1915. This colony was in an old decayed Cot- 

 tonwood stump, the roots, and subterranean galleries. Indications 

 are that the colony had its annual swarm in March or April, accord- 

 ing to Harve}^. The colony included 5,463 workers, 115 soldiers, 

 164 nymphs of the reproductive forms, and 297 young. Harvey 

 estimates that probably 95 per cent of the colony was collected. 

 The young third form male had stylets and ventral abdominal seg- 

 ments (sternites) 8 as in male; in the female there are 6 and the sixth 

 is broad; body and head markedly pigmented dark grey. Length 



Fig. 70.— Reticulitermes tibialis. Diagram of a portion of an arti- 

 ficial NE3T IN a glass JAR; NATURAL SIZE. A AND B. " ROYAL CELLS " IN- 

 HABITED BY 2 KINGS AND 3 QUEENS; SECOND FORM REPRODUCTIVE INDI- 

 VIDUALS. Workers attending queens and soldiers guardinq en- 

 trances. The mandibles are pointed toward the entrances which 



ARE NO larger IN DIAMETER THAN THE WIDTH OF THE ABDOMEN OF A 

 TERMITE. C. Cell containing eggs in large CLUSTER AND RECENTLY 

 HATCHED YOUNG ATTENDED BY WORKERS. D. EXIT HOLES THROUGH THE 

 SAND TO THE WOOD ABOVE. 



approximately 5 mm. (one should only approximate the measure- 

 ments of a specimen preserved in alcohol). There are no traces of 

 wing buds, but there are slight traces of eyes. Antennae with 16 to 

 17 segments. The pubescence is long and dense, as in reproductive 

 forms. This form is mature and very probably matured at the same 

 time as the winged adults and nymphs of the second form. 



This colony and a similar one of Neotermes castaneus Burmeistcr kept 

 alive for 17 years by the Rev. F. L. Odenbach have already been 

 discussed (Thompson and Snyder, 1919). 



On August 2, 1915, a small colony of Reticulitennes tibialis Banks 

 was collected in a stub of a dead scrub white oak, by B. T. Harvey, 

 at Ivywild, Colorado, and sent to the writer in Washington. The 

 insects, mostly in the wood, were placed in a glass jar filled with 

 moist sand. A labyrinth of galleries was constructed through the 



