TENTH KEPORT OF THE STATE ENTOMOLOGIST 



453 



hooked with no sucker visible, the last segment long, slender, spiny at 

 tip and on the two anterior pairs bearing a clavate appendage. The 

 hairs are very long, those on the posterior part of the body eq^ual to or 

 greater than the length of the body, and their origin marked by chit- 

 inous rings, six located on the posterior portion of the anterior division 

 of the body and standing quite erect, ten on the posterior portion, two 

 at antei-ior angles, two behind the middle, and others near the margin 

 on the posterior third of the body; abdominal suckers, four, located 

 between the abdominal legs. 



This species differs from 7! phylloxerm Riley, particularly in the 

 greater length of the tarsal joints, greater curvature of tarsal claw, and 

 the much greater length of the hairs — those at the end of the 

 abdomen being as long or longer than the body, while those of 

 phylloxerm, Riley describes as about one-third the diameter of the body. 

 It is also larger than specimens I have determined as phylloxerm, and 

 the second pair of legs is further back on the body than shown in 

 Riley's figure. 



Prof. Osborn found the above species different from the Tyroglyphus 

 which I had sent to him occurring in cavities in potatoes (see page 451). 



Phytoptus pyri (Scheuten). 

 Pear- Leaf Blister- Mite. 



(Class Arachnida: Ord. Acarina: Fam. Phytoptid^.) 



Scheuten: in Wiegman's Archiv., 1857, p. 101 (original description as 

 Typhlodromus pyri) . 



Packard: Guide Study Ins., 1869, p. 666 (brief nonce, as T. pyri). 



Glover: in Rept. Comm. Agricul. for 1872, 1874, p. 113, fig. 2 (brief notice, as 

 T. jiyri) . 



Murray: Econom. Entomol. — Aptera [1877], p. 358 (brief account). 



Burrill: in Gard. Monthly and Horticul., xxii, January, 1880 (general 

 account) . 



Riley: in Am. Ent., iii, 1880, p. 26 (review of Burrill's account), p. 74 (refer- 

 ence to Glover's account, as T. pyri) . 



Garman: in Rept. Ins. III., xii, 18S3, pp. 125, 134, 140, figs. 24, 25 (Burrill 

 quoted) . 



Osborn: Bull. no. 2 Iowa Agr. Coll., 1884, p. 56 (brief account). 



Crawford: Rept. on Fusicladiums, etc., in Australia, 1886, p. 46 (general 

 account) . 



Osborn-XJnderwood: in Canad. Entomol., xviii, 1886, p. 12 (listed). 



Gillette: in Rept. Mich. Hort. Soc. for 1886, 1887, p. 87 (mention). 



Webster: in Insect Life, i, 1889, p. 363 (mention); in id., v, 1892, p. 105 

 (abundant in Ohio); the same, in 23d Ann. Rept. Ent. Soc. Ont. , 

 1892, p. 40; also in Canad. Entomol., xxi^, 1892, p. 207. 



