Briefer Articles. jj 



tera, 749; Thysanura, i fossil; PhociiOi^-amia i and 5 \ars. and 2 

 fossil. 



Among- recent records entered in our books, the following' are 

 especially noteworthy : 



Pityojihis sayi mexicanus, Arapahoe Co., (H. G. Smith, named 

 by L. Stejneger.) 



Bufo lentiginosus woodhousei, Arapahoe Co., (H. G. Smith, 

 named by L. Stejneger.) 



Succinea lineata, Binney. , Kremmling, Grand Co., (T. D. A. 

 C, named by R. E. C. Stearns.) 



Agabus morosus, Lee, West Cliff, Custer Co , (T. D. A. C. 

 named by Dr. John Hamilton.) 



Lachnosterna crinita, Burm., near Swift Creek, Custer Co. 

 (T. D. A. C, named by Prof C V. Riley.) 



Orchester minutus, near Swift Creek, Custer Co., above 8,000 

 ft. (T. D. A. C, named by Dr. J. Hamilton.) 



Chrysomela montivagans. Willow Creek, Custer Co., 8,400 ft. 

 alt. (T. D. A. C, named by Dr. J. Hamilton.) 



Callidryas philea L , c?*, Arapahoe Co., (H. G. Smith, named 

 by H. W. Nash ) 



Crambus sericinellus. Tell., W. Custer Co., (T. D. A. C , 

 named by Hy. Edwards.) T. D. A. Cockerell^ Secretary. 



West Cliff, Colo., May 16, 1889. 



BRIEFER ARTICLES. 



The Loco Weed — The disease commonly termed loco among 

 stock men, which especially affects the horses throughout the 

 West, is one generally to be dreaded. It is usually ascribed to 

 the diseased animal having fed upon some one of the many large 

 species of Astragalus of which different species are found in dif- 

 ferent parts of our country. If eaten green the plants seem to 

 have no injurious effect — at least not so noticeable — but eaten 

 dry it soon proves fatal. A tea made from the Astragalus found 

 in New Me.xico, given in three doses of a pint each to an old but 

 perfectly healthy horse, caused death in thirty eight hours, 

 according to one man, whose ver?city is. however, open to doubt. 

 According to the same authority, an Indian mistook a bottle of 

 the tea for whiskey, resulting in a rush of blood to the head and 

 death in three hours. At Eort Whipple barracks, A. T., alfalfa 

 hay mixed with the loco weed rendered the horses crazy and 

 foolish, refusing to be led. and relief was only afforded by bleed- 

 ing in the neck veins. But no evidence agreeing with the above 

 yet known to have been placed on record, that is sufficient to 

 convict any plant. Some have ascribed the loco disease to the 

 presence of ticks in the horses ears, and their penetrating to the 

 brain, but the symptoms do not seem to agree with the genuine 

 "loco." This subject is worthy of careful stud}?- and investigation, 

 and any further evidence or discussions are invited. C. R. O. 



