12 Bulletin of the Brooklyn Entomological Society Vol. XI 



the females simply open a passage to the surface, staying in the 

 ground. The males come and find them. 



Little or nothing is known of the life histories of these beetles. 

 They live almost wholly underground, and are always found in 

 mountains. There are, as I have been able to find out, ten 

 species of these beetles, all living in California or the West 

 Coast. They are as follows : 



P. fimbriata Lee. Found in the middle Sierras. 



P. Behrensi Lee. In the mountains around San Francisco Bay. 



P. Rickseckeri Horn. Mountains north of San Francisco. 



P. hirticollis Schauf. Is found in the same locality. 



P. conjungens Horn. In the Santa Cruz Mountains. 



P. Ulkei Horn. Is found in Utah. 



P. staff Schauf. Is found in Oregon. 



P. australis Fall. Sierra Madre Mountains. 



P. Hoppingi Fall. In the San Joaquin Mountains. 



P. puncticollis Rivers. 



There has been a stray elytra picked up in the Santa Cruz ( ?) 

 Mountains which might prove to be from a new species, but 

 nobody can tell much from just one wing cover. 



I found three specimens of a Pleocoma on the Mt. Wilson trail 

 on Dec. 19, 1914. They may be a new species. They are now 

 in the possession of Prof. H. C. Fall, who has named two new 

 species of the genus. They were all males. If I had not at 

 that time been ignorant of the habits of the genus, I undoubtedly 

 could have gotten some females, as their holes were fairly thick 

 in the trail. 



They are apt to be found almost anywhere in the mountains, 

 so it is well to be ready for them. I neglected to take my 

 cyanide, as it was quite late for insects to be out, and as there 

 was snow on the ground about half way up the mountain. 



When I found the beetles I put two of them in a small tin box 

 and the other I tied up in the corner of my handkerchief. In- 

 side the box the beetles were having strenuous times. The 

 smaller one pried the head and thorax off the big one, and so 

 I took them all out, and came home with the three tied up in the 

 corners of my handkerchief, as the box was pretty well squashed 

 from my sitting on it during a snowball fight. 



