55 



trochanter 3 and 4 bear distally a sharp prick on the dorsal 

 (anterior) side (Fig. 2); the femur 4 two sucli spines ventrally 

 (posteriorly). 



Female. Fig. 1 shows us the general aspect of a female; the 

 male has thicker legs 2. The dorsal side (Fig. 1) has been de- 

 scribed above. 



The ventral side (Fig. 8) is characterized by its nearly hexa- 

 gonal sternal shield, by its genital shield being rounded anteriorly, 

 truncated posteriorly, and by its elongate ventri-anal shield. There 

 are two minute rnetapodial shields. The ring in which the leg 4 

 fits, is exactly like that in the male. 



Epistoma and hypostoma like those of the male (Fig. 1, 3 and 4). 



Mandibles (Fig. 9). Fixed finger with long cheek-tooth, strong 

 dog-tooth, two very small incisors and one strong one. Sense-organ 

 distinct. Movable finger with one dog-tooth and one incisor. 



All that may be said of the legs is shown in Fig. 1. Legs 1 

 and 4 somewhat longer than the body. Leg 2 the shortest and 

 thickest. Trochanter 3 and 4 with distal dorsal (anterior) spine. 



Habitat: decaying leaves. 



Patria: Java, Borneo. 



8. Pacliylaelaps ctenophorus Oudms., nov. sp. 



(With Plate I, fig. 10—12) 



Nympha generans feminina. Length 1330 y^. Colour a brownish- 

 yellow. General aspect (Fig. 10) like that of Pachylaelaps siculus 

 Berl. nympha generans feminina, with the following differences 

 though: 1. The apex is pointed and bears two bristles. 2. The 

 hairs on the dorsum are half or a third their size, except those 

 on the shoulders, which are stronger. 3. The insect is larger, 

 measuring 1330 /*,., whilst the nympha generans feminina of Pachy- 

 laelaps siculus Berl. is only 875 (j.. in length. 



Ventral side (Fig. 11). The great difference lies in the form 

 of the genital and anal shields. Tbe genital shield is subtrape- 

 zoidal, with rounded anterior and posterior margins, and concave 

 sides, resembling a church-bell. lts posterior margin lies in the 



