76 ENTOMOLOGICAL SOCIETY 



Hetcerius morsus Lee. Found by Mr. T. D. A. Cockerell 

 at West Cliff, Colo., April 23, in a " nest of a brown ant, appar 

 ently, without doubt Formica fusca L." (Ent. Mo. Mag., 26, 

 1890, p. 158). 



Hetcerius hornii Wickh. This species, which is unknown to 

 me, was described by Mr. Wickham (Pysche, 6, p. 322) from a 

 specimen found with Formica schaufussi, at Cheyenne, Wyo., 

 in May, 1889. 



Hetcerius tristriatus Lee. This is a common species from 

 the Rocky Mountains to the Pacific States, and seems to live with 

 all species of Formica occurring in that region. The following 

 hosts were ascertained by Mr. Hubbard and myself : Formica 

 subcenesceus (Glenwood Springs, Colo., May 15), F. obscuri- 

 pes (Tenino, Wash., May 30), F. schaufussi (Ft. Assiniboine 

 and Helena, Mont., in April and May). 



Hetcerius n. sp. A very small species allied to H. brunni- 

 pennis was found by Mr. Hubbard and myself just as widely 

 distributed and having the same hosts as H. tristriatus. Upon 

 uncovering colonies of Formica subcenesceus at Glenwood 

 Springs we repeatedly observed that an ant seized with its man 

 dibles the beetle and carried it into the safe retreat of the subter 

 ranean galleries. 



Cremastochilus crinitus Lee. This is extremely abundant 

 throughout northern Utah, in the plains as well as in the moun 

 tains to an altitude of about 7,000 feet, and it is a common sight to 

 see specimens being dragged about by ants. Formica obscuri- 

 pes and F. fzisca have been ascertained as hosts. Normally, the 

 upperside of the beetle is furnished with long hairs, but in most 

 specimens found the hairs have been eaten off by the ants, usu 

 ally completely so. The excretion which is so eagerly sought 

 for by the ants issues from a pair of glands at the inner side of 

 the anterior thoracic angles and another pair of glands situated 

 beneath and within the posterior angles. That exuded from the 

 latter source is very copious, and, if a specimen of the beetle is 

 for some time not attended to by ants, it accumulates as a honey- 

 colored, sticky mass at the base of each elytron. 



Saxinis saucia Lee. Several larval cases were found under 

 stones in colonies of Formica subcenescens at Glenwood Springs, 

 Colo., May 15, 1891. The larvse were full grown at that time, 

 and two images were bred from them about three weeks later. 

 The dirty brown cases are slightly bulging behind and have no 

 longitudinal ridges. 



Coscinoptera vittigera. Larval cases were quite abundant 

 among colonies of Formica subcenescens at Glenwood Springs, 

 Colo., May 15, 1891. Two specimens of the beetle were bred 



