290 ENTOMOLOGICAL NEWS [XXXI, '20' 



only moderate. Last pair of legs extending for the full length of their 

 tarsi beyond the tip of abdomen; trochanters swollen, much stouter than 

 the longer femora; claws weak and situated at the tips of long pedicels. 

 Length, 1.70 mm.; width, 0.90 mm. 



From Ithaca, New York; under a stone; by the writer. 



Described from female type, in the writer's collection. 

 Its large size and epistome with five subequal teeth are the 

 most significant characters of this species. 



Liponyssus setiger new species. (Text figs. 6, 7.) 



cf. Species yellowish brown and strongly spined. Palpi rather small 

 and not more than one-half as long as anterior legs. Chelicerae not very 

 stout but long and with sharp chelae; upper chela about one and one- 

 half times as long as lower and sword-shaped. Body broadest at its 

 middle and pointed behind, shoulders prominent. Above the body is 

 well clothed with prominent, long, straight, spine-like setae; a rather 

 conspicuous recurved pair is situated at the apex of the cephalothorax^ 

 and a single straight seta is situated at tip of abdomen. Peritreme slight- 

 ly sinuous and ending at a level between coxae III and IV. Legs stout; 

 last pair longest. Second pair of legs larger than adjoining pairs. Last 

 pair extending for fully half their length beyond the tip of abdomen; 

 trochanter stoutest segment; femur equal to patella in width and but 

 slightly longer. Length, 0.64 mm.; width, 038 mm. 



9 . Stouter than the male, with the setae of the body less conspicuous . 

 Chelicerae of the generalized type; fi.xed arm with a rather conspicuous- 

 lateral seta. Posterior legs not enlarged as in male. Length, 0.68 mm.; 

 width, 0.45 mm. 



From Madison, Wisconsin; on a short- tailed shrew; by 

 A. C. Burrill. 



Described from several specimens all collected at Madison. 

 The presence of the lateral seta on the fixed arm of chelicerae 

 of female in this species is almost a unique character. In 

 general appearance similar to L. spiniger Ewing, but without 

 the enormous spines on the first and second pairs of legs. 

 Cotypes in the writer's collection. 



Liponyssus bertnudaensis new species. (Text fiig. 8). 



9 . A medium-sized, light yellowish brown species. Palpi fully one- 

 half as long as the anterior legs. Chelicerae moderate in size, not heavily 

 chititinized. Body broadest behind the posterior coxae, almost evenly 

 rounded behind, shoulders pronounced. Peritreme following the body 

 wall for about one-half its length, then extending backward in a sinuous 

 course to the stigma which is located at a level between the third and fourth 



