( .-.38 ) 



f. 14). Ou each sido of the anal plate x a Hap is present. These flai)s may 

 either he the lateral jjarts of the anal jilate turned up in eonseciuenee of the ])r('ssure 

 the mounted specimen is snlijected to, or they may he separate jilates ventral to x. 



It is obvious that the portion designated in f. l"i on Fl. W'll. as ix. d 

 is really the dorsal ninth segment, and the hoomerang-.sliaped organ the ninth 

 steruite. The aual plate x must be a tenth segment, as it is separated hy a 

 suture from the ninth, the line of separation being ascertained from longitudinal 

 sections. The plate x, moreover, lias been further observed in a live specimen to 

 flajj up and down, while the ninth tergite with its sensual plate showed no 

 movement. If the lateral flajis beneath the tentli tergite, which covers the anus 

 from above (i'l. XVII. f 12. 14), are separated from x, they mnst represent 

 the tenth steruite. If, however, they arc only the sides of x, it might be suggested 

 that the tiuger-likc organ f of ix. d was a modified tenth steruite. 



In the genus T'/j/liln/jsijllti and other genera of Pulicklae not only the ninth 

 tergite of the mule aflbrds wod distinguishing characters, but also the ninth steruite, 

 as can be ascertained by a comparison of PI. XVII. f. Vi. 1:5. 



Genus TYPHLOPSYLLA. 

 1. Typhlopsylla agyrtes (PI. XVa. fig. 1 S, a ?). 



? 2'. asgimiUs Taschenberg (et alii), Die FWhe p. 1)5 (1880) (partim). 

 T. assimilis Saunders (not Taschenberg), Eitt. .I/ok. Mng. ('2). II. p. 170 (1891). 

 T. agijrtes Heller, Ent. Xnrhr. X.XII. p 97 (18!)i;) (Borkum) ; Wagner, Hor. Soc. ICiit. lioss. XXXI. 

 p. 35. t. 9. f. 23 (1898). 



The front of the head is rounded, and has in front of the antennal groove two 

 parallel rows of bristles. The first row consists of five bristles, and the second of 

 three. Immediately in front of the antennal groove is a small si)ine-like tubercle, 

 the exact position of which can be best made out from the figure. The genu has at 

 its posterior edge three spines wliich stretch backwards. 



Near the hinder edge of the head is a row of four bristles. The most ventral 

 of these is very long. Between this row of bristles and the antennal groove there 

 are five or six longer bristles. The upper four of these stand in an oblique position. 

 The antennal groove is dorsally bordered by a series of fourteen (c?) very thin 

 short hairs; in ? there are some additional short bristles behind. 



The prouolum bears a row of hve long hairs, between every two of which a short 

 hair is placed. At its [josterior margin is a comb of sixteen teeth. This number 

 appears to be invariable. The dorsal portion of tiie nicsothorax has two rows of 

 hairs on it; the first consists of short hairs, the second of long ones. The anterior 

 jjortion of the mesonotuni, moreover, bears numerous small hairs scattered irregu- 

 larly over its surface. The episternum ( + epimeron, i:i//c j). o3o) is a moderately 

 large plate, the shape of which can be best seen in the figure ; it bears ten hairs. 



The metauotum bears, like the mesonotum, two rows of hairs. Besides these 

 there are some more hairs on this portion of the thorax placed just beyond the 

 middle. The episternum is a small semicircular plate with two bristles at its end- 

 The epimeron is large and shaped as in the figure ; it bears five hairs. 



The first seven tergites of the abdomen of both sexes, as usual, have two rows of 

 bristles on them. The first of these rows consists of small bristles of a uniform size. 

 The second row contains alternately long and short liristles. The number of these 



