HYMENOPTERA FOBMICIDJ5. (5H) 



long as the basal joint, and thickens very slightly toward the apex. The 

 thorax, preserved so as to show more of a dorsal than a lateral view, is coin- 

 pact, oval, less than twice as long- as broad, with no deep separation visible 

 between the nieso- and inetathorax, tapering a little posteriorly. The pe- 

 duncle, as preserved, is a minute circular joint, hut from its discoloration 

 appears to have had a regular, rounded, posterior eminence. The abdomen 

 ei insists of live joints, is very short oval, very compact und regular, and of 

 .1 1 H nit the si/e of the thorax, although rounder. The legs are long and 

 slender, the femora of equal size throughout, and all the pairs similar. Then- 

 is no sign of wings, and the specimen is probably a neuter. 



Length of body, 7.5 1 " 1 " ; of head, 1.4""" ; of thorax, .VJ""" ; of abdomen, 

 ',t""" : breadth of head, 1.1"""; of thorax, 1. !)""": of abdomen, 2.2 m " : diam- 

 eter of peduncle, 0.55""": length of first joint of antenna-. 1""": of rest of 

 .mtenn;e, 1.G5""" \. 



Green River, Wyoming. One specimen, No. 14HII2 (I)r. F. V. Havden). 



CAMI'ONOTI'S Mayr. 



CAMPONOTUS VETI?S. 



I'l. r, Figs, i, i*. 



f'amiiniKitim ri'tus Sciiild., Bull. 1'. S. Geol. Ocogr. Siirv. Ti-rr.. Ill, T-I'J (1*77). 



A single specimen, very fairly preserved, lying upon the side ; a rem- 

 irint of one wing is left, and a faint indication of the antenna 1 , but the 1 -u- 

 are wanting. The head has a flat summit, the upper half of the sides roundly 

 protuberant, the lower half rather broad, and tapering but little ; the thorax 

 is long and moderately slender, compacted into a single mass, with a low 

 an-h. more than twice as long as high. The first segment of the abdomen 

 increases rapidlx in size posteriorly, and has a rounded knob above at its 

 hinder end; the abdomen is long and slender, composed of five joints, the 

 >eeond the largest, gradually tapering to the pointed tip. It seems to a^n-e 

 lieiier with Camponotns than \\ith anv other genus, but has a differentlx 

 -haped head and first abdominal joint, and is smaller than the species of thai 

 ^enn-i. ao thai it Is nnlv placed here provisionally until other and better 

 Specimens are obtained 



l,e],M-t|, of body, .;.7.Y""': <if thorax, 1.15""": of abdomen, _'"" 



\\ hite li'iver. near the ( 'olorado-Utah boundary. < hie specimen < \\ 



I lelltull 



