NO. 1361. REVISION^ OF AMERICAS SIPnONAPTEliA—BAKKn. 413 



tinct frontal notch. Gena with the normal lower row of three bristles, 

 the middle one of the row weakest, the upper row represented l)y one 

 bristle near the mart^iii. No minute hairs occur above the eye. Gena 

 below eye obliijuely ti'uncated posteriorly. Hind mart^in of antennal 

 o-roove with a very f«nv small hairs. Hind margin of head with tin; 

 usual bristles, and one on the disk of the vertex behind the middle of 

 the antennal oroove. Labial palpi ivachinj^ beyond the middle of the 

 anterior femora. 



Pronotum with a transverse row of about ten l>ristles and a ctenidium 

 of sixtecni stout spines. Meso- and metanotum with two rows of 

 bristles each, the principal row, in both cases, composed of about 

 twelve bristles. Hind margin of metanotum with four small dark- 

 colored teeth. Abdominal terg-ites each with two rows of bristles, the 

 principal row of fourteen to sixteen bristles. Antepygidial In-istlcs 

 three on each side, two larger of nearly equal length, and one smaller 

 near the niedian line in each group. Hind margins of first and second 

 abdominal tergites with a single small dark tooth on each side. 

 Abdominal sternites each with six or seven bristles on either side, the 

 seventh and (>ighth onl}" with two rows. Just beneath the pygidium 

 on either side are two stout bristles. Tenth terg'ite with scattering 

 small bristles, which are larger toward the tip. 



Style rather short, swollen toward the base and narrowed to the tip, 

 where there is one long bristle, back of which are two small bristles, 

 one above and one below. Substylar Haps thi<'kly bristled, the longest 

 bristles l)eing apical. 



Hind coxffi without minute teeth within. Hind femur wnth a row 

 of four or five bristles on the side. One of the apical spines on joint ii 

 of hind tarsi extends to one-half of fifth joint. The last tarsal joint 

 has five spines on either margin, but the first pair are slightly l)ent 

 inward. Lengths of hind tarsal joints in the proportion 24-1 0-T-;")-!*. 



Length, 2.5 mm. Color, clear brown. 



Type.— Qui. No. 6iaT, U.S.N.M. 



CERATOPHYLLUS BRUNERI Baker. 



Plate XXV, tigs. 1-5. 



This species was originally descri))ed from C/frNm IS-Jinedtus 

 and C. fmnMini. We luue no new I'ecords to add. as some of the 

 supposedly new records have turned out to refer to difi'erent species. 

 Additional structural details may be made out from the figures and 

 synopsis. 



CERATOPHYLLUS IDAHOENSIS, new species. 



Plate XVIII, %H. 1-6. 



Four specimens which Professor Aldrich took on Citellm cohim- 

 hlaniis at Moscow, Idaho, rei)resent two perfectly distinct species, 



