132 Mr. C. J. With on Cnielonethi 



ones are long and slender. The tenth and eleventh tergites 

 bear a pair of "tactile^* hairs each. The sides of the 

 abdomen are minutely sliagreened. Tlie fifth to the 

 eleventli sternal sclerites are similar to the tergal, but they 

 are rather short in the middle and -widened out laterally ; 

 the hairs, which are long and slender, are not placed along 

 the hinder mai-gin, but behind. The selerite of the fourth 

 sternite is divided into two well-separated triangular por- 

 tions. The selerite of the third sternite is better marked 

 and provided with short hairs along hindmost margin and 

 ■with the front margin curved inwards in the middle. 

 In front of this sternite, -which constitutes the hindmost 

 genital plate, and between the fourth pair of coxae, a com- 

 plicated system of inner organs belonging to the male 

 system are visible. 



Antennce (figs. 2 a-Z»). — The anteunse are large and gape 

 distinctly when closed. The Jlagellum consists of at least 

 six long slender hairs, provided with densely placed tiny 

 teeth along the front margin ; the hindmost hair is con- 

 siderably shorter than the others. This flagellum presents 

 great similarity to that of /. crassimanum, Balz. (cf. H. J. 

 Hansen's figure, 15, tab. v. fig. C/). The immovable finger 

 possesses along its inner margin a dorsal row of many 

 tiny teeth, which vary in number and size in the different 

 specimens. 



The serrula interior is very similar to that described by 

 Hansen in Id. crassimanum, Bal. (fig. Qh) ; the basal teeth 

 are placed near to each other and are very short compared 

 with the distal ones, which are almost completely free, 

 slightly curved, j)ointed, and with the hinder margin 

 serrated ; this serrula seems to be fused with the finger in 

 its whole length to base of terminal tooth. Independent of 

 this serrula, and placed on a lower level, there is a very long, 

 slender, and curved spine, slightly dentated along its hinder 

 margin ; we find a similar one in /. crassimanum, but less 

 curved. 



The (jalea is rather long, slender, and blunt ; its root is 

 well removed from the tip of the finger. The end of the 

 movable finger is moderately curved (fig. 2 a) ; behind 

 the tip the dorsal margin possesses six to ten teeth, 

 which are of unequal size in the different specimens, and 

 even in the two antennae of the same specimen. 



The serrula exterior is very similar to that draMu by 

 Hansen for /. crassimanum (fig. 7); its distal portion is 

 free ; there are about 30 teeth, which are larger distally 

 and are more or less fused. When the serrula is observed 



