NO. 1361. REVISION OF AMERICAN SIPHONAPTERA— BAKER. 423 



Male: Head flattened above or even a little depre.ssed. Upper row 

 of bristles on vertex dislocated at middle, two bristles l)eing lower than 

 the other two. The inner and outer spines in eaeh ^•roupofantei)v<'i- 

 dial bristles arc considerably smaller than the middle one, though not 

 reduced to hairs. 



Lateral portion of ninth termite two-lobed, the upper lobe very short 

 and bluntly rounded and with three lono- bristles on the posterior niartrin; 

 lower lol)e as in agyrte^^ with one bristle over the insertion of the 

 cla.spers. Upper claspers rather lonj^-, pai-allel sided, the oute- upper 

 anofle obtusely pointed, the upper inner angle broadly obliquely rounded 

 and hero margined with a number of small hairs; on the hind margin 

 are several minute hairs near the upper end, and several small bristles 

 below. 



Length, 1.75 mm. 



ryi?d.— Cat. No. 6923, U.S.N.M. 



CTENOPHTHALMUS INTERMEDIUS (Wagner). 



This species — described as a Typhi opsyUa by Dr. Wagner — w;w (col- 

 lected on Metaehlrns opossum in Paraguay and Ecuador. It is an 

 interesting addition to the American fauna, very distinct from an}-- 

 thing previously described. The structure of the head strongly sug- 

 gests CtenopsylJus^ ])ut the tiliial spines and other characters are those 

 of Ctcnoj)Mhahiiiix. 



CTENOPHTHALMUS FRATERNUS Baker. 



This species is known only from the type, a single female taken at 

 Brookings, South Dakota, by Professor Aldrich. He did not give the 

 host, though it is ([uite likely to prove to be one of the moles. As tlie 

 original characterization was somewhat meager, the following descrip- 

 tive notes are added: 



The head is broadly rounded from the occiput to the prominent 

 frontal notch, and thence slopes downward and backward to the 

 mouth, giving the head an angulated appearance. A row of six bris- 

 tles occurs high upon the gena; below this a row of two large jukI one 

 small bristle, and on lower posterior portion of gena a ctenidium par- 

 allel to the upper rows of bristles and composed of live large, stout, 

 dark -colored spines, the middle three longest. The antennal groove 

 reaches to three-fourths the depth of the head, is not coiuiected with 

 the opposite antennal groove by a furrow passing over the top, and is 

 without minute hairs or bristles scatten^d along the posterior margin. 

 On the disk of the vertex occur extensions of th(^ two rows of bi-istles 

 on gena — about seven bristles above and eight below. Hind margin 

 of head with the usual bristles. Labial palj)i eipialing three-fourths 

 of anterior coxa% the apex of the last joint having the usual minute 

 hairs except that posteriorly on each palpus one is nuicli eidai'giMl and 

 hooked. 



Proc. N. M. vol. xxvii— 03 28 



