Cooley & Kohls: Argasidae of N. America, etc. 45 



the pulvillus and claws long and slender. Palpi long and slender; terminal 

 article about three times as long as wide. 



Hypostome. — Long, and with the denticles arranged -/ L », lateral denticles 

 larger; denticles present for most of the length. Apex rounded, corona with a 

 few very fine denticles. Length, 0.18. 



Fed larvae are short-oval, measuring about 3.75 x 2.75. Leg I as distant 

 from the capitulum as from leg II. 



HOSTS AND DISTRIBUTION 



The type specimens were from Mexico. 



California. — Banks (1908) saw specimens from San Francisco and Santa 

 Clara County and stated that "it has been taken from cattle and cattlemen." 

 Nuttall, et al. (1908) mention specimens collected at Los Olivos (Santa 

 Barbara County) in August, 1904. Herms (1939) stated that the species 

 occurs in the more mountainous coastal counties and that he collected it on 

 Mount Hamilton (Santa Clara County) in deer beds among the low scrub 

 oaks (Querent diunosa) . Kohls collected 200 nymphs and adults on Mount 

 Hamilton, May 15, 1940. 



We have seen specimens as follows: 8692 A, on ground, September 11, 

 1932, Mount Hamilton, Santa Clara County, 5 immature specimens (Heber 

 Donohoe); 8607A, deer bed ground, Mount Hamilton, July 1932, Santa 

 Clara County, several specimens; 12751, ground, October 1936, Monterey 

 District, 1 adult (Joseph W. Burke); 5 lots, dates ranging from June 10, 1938 

 to January 30, 1940, Hastings Natural History Reservation, Monterey Coun- 

 ty, several specimens of all stages, (Dr. J. M. Linsdale); 16286, Monterey 

 County, June 30, 1939, 1 nymph; 17338-39-41, host not stated, April, May, 

 June, 1940, Calaveras Dam, Alameda County, 3 nymphs (Robert Holden- 

 ried); 17392, Cliff swallow's nest in cave, April 8, 1932, Mt. Diablo, Contra 

 Costa County, 1$ (Aitken and Howell); 17955, Odocoileus hemionus, 

 August 8, 1940, Hastings Natural History Reservation, Monterey County, 29 

 nymphs (Dr. J. M. Linsdale); Odocoileus hemonicus colambianus Septem- 

 ber 8 and 9, 1941, Cobb Mt., Lake Co., 4 nymphs (J. E. Hare). 



Mexico. — Nuttall et al. (1908) determined specimens collected in Janu- 

 ary 1908. They were found "whilst exploring some rock inscriptions near San 

 Geronimo, on a hill in a sandy plain (Isthmus of Tehauntepec) ." 



Hoffman (1930) stated: "O. coriacens is a native of the hot and temper- 

 ate regions along the Pacific extending all the way from California to Chiapas. 

 As to the eastern or Gulf region of Mexico, I am as yet uninformed." (Trans- 

 lation.) 



