( (520 ) 



and the sccoml row consists only of two bristles on eacli side. Tiiis tergite bears 

 two rather short apical bristles on a double cone in the <?, the ? having an 

 additional bristle below them which is not situated on a cone. There is one small 

 ajiical tooth on each side of tergites 1 to 4. The first sternite in the c? bears 

 a single ventral hair. In tiie ? there are ventrally some small hairs, and in 

 addition a bristle and a patch of small hairs sitnated near the upper edge, with 

 one long bristle above it. On sternites 2 to 6 there are two bristles in the <S and 

 a row of three or fonr in the ? . The seventh sternite in the ? bears two or three 

 farther up. The stigma is small, pear-shaped, and is situated between the first 

 and the second bristles of the posterior row. 



Legs. — The forecoxa has very few bristles. On the mid- and hindcoxae there 

 are a few bristles at the anterior edge and two or three on the outer surface. 

 The hindcoxa bears posteriorly at the apex two bristles standing widely apart. 

 The femora have one bristle ventrally before the apex on the onterside. The 

 tibiae bear a few hairs on the ventral side and one row on the outer. The hind- 

 tibia has seven pairs of dorsal bristles ; the longer one of the fifth pair being 

 as long as the tibia is broad. The longest apical dorsal bristle of the hindtibia 

 is one-third shorter than the first tarsal segment. This segment is only a little 

 shorter than the hindtibia. The fifth segment is similar to that of C. tristis (Roths.)* 



The measurements of the tarsi are as follows :^ 



modified Segments. — The eighth sternite of the S is large. The finger (f) 

 (PI. XJ. fig. 40) is large, slightly curved, and bears a few hairs at the edge, 

 of which one, sitnated at its aj)ical fourth, is the longest. The exact outline of 

 the clasper cannot be made out from the single cJ specimen. The ninth sternite 

 (ix. st.) is apparently not divided ventrally, bearing at the apex on each side two 

 spine-like bristles, of which the lower one is the stouter. 



The eighth tergite of the ? bears no bristles above the stigma. At the 

 apex and near the ventral margin there are about ten to twelve bristles. The 

 eighth sternite (PI. XI. fig. 48) bears at the apex a row of about six hairs. 

 The stylet is conical and not quite three times as long as it is basally broad. 



Length: c?, 2-0.5 mm. ; ?,2-Tmm. 



We have one pair (<?, ?) of this species taken by Mr. Oldfield Thomas, 

 F.R.S., of the British Museum, off spirit specimens of Acrobates pyymaea from 

 Australia. The precise locality is not known to me. 



19. Ceratophyllus zethi spec. nov. (PI. XI. fig. 50 ; XII. fig. .52). 



Head. — The forehead (PI. XI. fig. 50) bears a row of eight fine bristles 

 sitnated between the npper end of the antennal groove and the frontal corner. 

 There is one long bristle sitnated some distance before the eye, and another at tlie 

 ventral edge a little in front of the long one. Between these bristles and the upper 

 row the forehead bears on the side numerous small hairs. There are also two 

 hairs beneath the eye at the ventral edge. The hinder part of the head bears two 



• Typhlopsylla tristis Rothschild, £nt. Rw. xii. p. 36 (1900). 



