' THE CANADIAN ENTOMOLOGIST. 229 



Mass. It is known from California, Colorado, Florida, and Georgia, on 

 orange and lemon. * 



(69) Mytilaspis Gloverii, Pack.; 1869-1897. N. 



At Lawrence, Mass., on orange and lemon in fruit stores, and 

 recorded from California, Louisiana, Florida, Georgia, and New York, on 

 orange and lemon. 



(70) Ptnnaspis pandani, Comst.; 188 1-1880. L 



At Cambridge Botanic Gardens, coll. by J. VV. Folsom, 1898 (Ckll. 

 in litt.). Originally described from Harvard Botanic Garden under the 

 gen us • My t Hasp is. 



CORRESPONDENCE. 



A CALIFORNIAN TICK. 



Sir, — Herewith I send a specimen of an Arachnide which looks ta 

 me to belong to the genus Argas, or so it was called when I was studying 

 that group of Arf/irozoa. 



At the same time, I send you an account of observations upon the 

 effect of the bite of the Argas, which observations seem to me to throw 

 some light on the conflicting statements regarding the effect of the bite of 

 the reputed Argas Persicus. 



From the observations of my correspondent, Mr. R. A. Plaskett, whO' 

 resides in a district in the Santa Lucia Mountains infested by this very 

 local Arachnide, it appears that horses, which animals are generally 

 bitten just above the hoof, seem not to suffer. The Argas drinks only 

 from three to five minutes and then drops without leaving a swelling. 

 This is unlike the Ixodes and Trombidiuvi, which will suck for a day or 

 two, frequently causing swelling and suppuration. These are generally 

 reputed to be the result of methods used in extracting the animal, but 

 they are occasionally observed where the animal has left of its own free 

 will after having satisfied its appetite. 



Another peculiar characteristic in the habits of the animal is its dis- 

 like of green vegetation. It is always found on the top of dry, leafless 

 twigs or in dust, never amidst foliage, as are Trombidium and Ixodes ; 

 but tliis part of my friend's observations has to be taken cum grano salts, 

 as he is not an experienced entomologist, and amidst green foliage it is 



