56 



sarue curve as the outer inargins of the fused lateral and nieta- 

 podial shields. The anal shield is small, much narrower than the 

 genital shield, 



The epistoma is of the coinmon type. 



The hypostoma has two horns whieh have half the size of 

 those of P. siculus Berl. The inner malae form a long feathered 

 spine. 



The mandible (Pig. 12) is provided with three teeth on each 

 finger, the cheek- and canine-teeth directed soinewhat backward; 

 the upper incisor large, projecting beyond the lower one. 



Habitat: Heliocopris bucephalus. 



Patria: Java. 



9. Pachylaelaps uiiuutus Oudnis., nov. sp. 



(With Plate I, fig. 13—16, 18—19, 21—25, Plate II, fig. 17, 20, 26—29) 

 The species was found by me on Heliocopris bucephalus, one of 

 the most common beetles (Copridae) of Java. Nymphs, males and 

 females were present. 



Nymph (Fig. 13). The nymph is a real nymph, without genital 

 characters. lts length is about 420 y. ; its shape somewhat oval, 

 its leugth twice its breadth, it is somewhat shouldered, and has 

 nearly parallel sides. The colour is that of the known species of 

 Pachylaelaps, a brighter yellow than of Parasitus coleoptratorum 

 and others. The ventral si.de (Fig. 14) is characterized by the 

 following particnlars. The sternal shield is anteriorly prolonged 

 by a piece, intercalated between it and the capitulum. I will 

 call this piece a praesternal shield. It bears the small mentum 

 on its anterior edge. The sternal shield itself bears 8 hairs, and 

 its hind-half, eomparable to a genital shield, two little hairs. 

 The part between the coxae 4 is narrow. Th ere is a subqua- 

 drangular anal shield, two very elongate lateral shields with the 

 peritremata, and two small metapodial shields. The epistoma 

 (Fig. 15) ends in a semicircular denticulated comb; the middle 

 and a lateral tooth twice the length of the others. The hypo- 

 stoma (Fig. 16) is typical. The bases of the maxillae are coa- 



