6 PROCEEDINGS ENTOMOLOGICAL SOFIETV 



Pteroptus grossus, new species. 



Body broadest at anterior third, rounded in front, tapering behind to 

 a small rounded tip; above without bristles on anterior part, except a 

 few along the margin and one on each humerus; apical third of dorsum 

 with many short, stiff bristles, becoming larger near the tip, where they 

 are very numerous. Legs large and heavy, with many large bristles, 

 longer than the joints, except on the tarsi. Venter without bristles, and 

 only a few small ones on the ventral side of the legs. In the female the 

 posterior part of abdomen is broader, and the shield does not reach be- 

 hind the hind coxae. 



Length, 1.4 mm. 



From Beulah, New Mexico, on a bat. 



Family IXODID.E. 

 Ornithodoros marginatus, new species. 



Body fully twice as long as broad, much narrowed and tapering in 

 front to a pointed cone, which greatly overhangs the mouthparts; behind 

 the body is broadly rounded. The dorsum is concave, the margin ele- 

 vated all around and with a row of small tubercles, each tipped by a 

 brush of short, erect hair, extremely characteristic. The dorsum is 

 slightly elevated in the middle, with irregular depressions each side; 

 the surface with scattered small tubercles, each tipped with a tuft of 

 short hair; pleura with similiar tubercles, but none as large as those on 

 the margin of body. Sternum without tubercles, but with simple hairs. 

 Legs rather short and stout, leg I about one-half the length of body, all 

 joints with many simple hairs, those on the upper surfaces of the last 

 and penultimate joints of legs I, II, III short and erect; all tarsi with- 

 out humps; the penultimate joint largest near the tip. No eyes. The 

 beak prominent from below, the palpi slender; no flaps at sides, all with 

 stiff, simple hairs. The anus large, situate considerably behind the 

 hind cox;t ; a transverse furrow behind it. The sternum with a groove 

 each side in front, approximating near coxae III ; a groove each side on 

 posterior part of sternum, bending outward behind the hind coxae. 



Length, 5 to 8 mm. 



From a cave in Guauajay Mountains, Cuba, May 5 (Palmer 

 and Riley); also from a West Indian bat (Barrett) probably 

 from Porto Rico. The cave specimens are mostly covered 

 with dirt; they doubtless fed on the bats in theca^e. Readily 

 known from all other species by the row of tufted humps on 

 margins of body. 



Ixodes aequalis, new species. 



Shield yellow-brown to dark red-brown. Capitulum subtriangular, 

 porose areas rather large, subcircular, less than one-half a diameter 



