380 DR. K. JORDAN AND HON. N. C. ROTHSCHILD OK 



short but fairly thick ; in the i:iew species there are some weal? 

 hairs instead (text-fig. 114, VIII. st.). 



5 , The seventh sternite of the § bears on each side a row of 

 12 or 13 bristles and about 6 small bristles in front of the row. 

 The apex of this sternite (in lateral aspect) is truncate, the 

 margin being very slightly excurved centrally. The eighth 

 tergite has a cluster of 5 or 6 bristles below the stigma and about 

 15 bidstles at, and near, the ventral and apical margins. A.s in 

 the 2 of C'. tesquorum, there are two long antepygidial bristles on 

 each side, not accompanied by a third stout bristle, and the 

 bristles of the anal sternite stand far removed from the base in 

 a dense cluster occupying the apical two-fifths of the sternite. 



One pair from Yu-lin-fu, Shensi, 4000 ft., taken ofi" Citellus 

 mongolicus. 



7. Ceratophyllus famulus, sp. n. (Text-fig. 115.) 



5 . Closely resembling the preceding species," but the bristles 

 on the body and legs are moi-e numerous. 



Head , — Frons moderately curved , slanting. The tubercle small, 

 placed a little nearer to the central sensory organ (pale dot) than 

 to the oral corner. In front of the well-developed eye there is a 

 row of three bristles, the upper one being placed a little lower 

 than the centre of the eye and the second, being nearer to the 

 upper than to the lower bristle. Between the upper bristle and 

 the antennal groove there are several minute hairs. The occiput 

 has above the antennal groove one long bristle and about 14 

 minute hairs. The subapical row of bristles of the occiput 

 contains on each side five or six, of which the lowest is the 

 largest, being separated from the next bristle by a wide interspace. 

 The bristles of the second antennal segment are long, ten of them 

 I'eaching the apex of the club or beyond. The rostrum extends 

 beyond the base of the fore femur, the apex of the fourth seginent 

 being on a level with the base of the trochanter. The maxillary 

 palpus reaches to the base of the fourth segment of the rostrum. 



Thorax. — The pronotal comb consists of 20 spines. Themeso- 

 and metanotum have each two rows of bristles, the second row 

 containing 11 or 12 and the anterior one 15, on the two sides 

 together. The mesonotum has about six and the metanotum two 

 or three additional bristles on the back. The mesopleura have 

 about five long bristles and anteriorly several thin hairs. The 

 metepimerum bears six bristles (2, 3, 1). There are two short 

 apical spines on each side of the metanotum. 



Ahdomen.— The tergiteshave all two rows of bristles, with one 

 or two additional bristles on the back ; tergites I to IV bearing, 

 moreover, some apical spines. The stigmata are placed above the 

 first bi-istle of the posterior row, but far in front of it. The first 

 sternite bears a pair of ventral bristles, and no lateral bristles or 

 only one. The sternites of segments III to VI have on the two 

 sides together a postmedian row of 8 bristles and a few additioiial 

 small bristles in front pf the row, The sievepth segment, however, 



