22 



dorsal side and remains there, running along the dorsal shield 

 till above the coxae 1. 



Epistoma like that of the male. 



Mandibles (Fig. 16 and 17) remembering of those of L. lepido- 

 peltis Klti. The immovable finger, however, has no crooked appen- 

 dages dorsally and outward, but 3 hooks ventrally and inward. 

 The movable finger has a knife-like inner blade with a hook or 

 tooth directed forward. 



Hypostoma, maxillae, palps. Like those of the male, except 

 that the inner malae are bowed inward and cross with their 

 tops (Fig. 15). 



Habitat. Vesperugo noctula. 



Patria. Germany. 



3. Lipoiiyssus albatus (C. L. Koch). 



With Plate, I, fig. 18-25. 



Nympha. Length 360 p. — Colour white, or pale. — Shape 

 like that of the nymphae of the other species of Liponyssus. — 

 Dorsal side (Fig. 18). There is one dorsal shield, without any 

 structure, long-oval, with the top turned backward. On this shield 

 there are four longitudinal rows of hairs, two marginal and two 

 medial. The posterior pair of hairs is long. The soft skin of the 

 abdomen bears hairs too. — Ventral face (Fig. 19). The sternal 

 shield is long, with 4 pairs of hairs. Between this and the anal 

 shield the usual three pairs of hairs are present; the soft skin 

 behind the coxae 4 and surrounding the anal shield is provided 

 with many hairs. 



The peritrema is curious ; it reaches the level between legs 1 and 2. 



The legs 1 and 2 are obviously thicker than 3 and 4. On femur 

 1 and 2 we observe two spines (Fig. 18). The coxa 2 bears two 

 spiues, one directed forward, one backward (Fig. 19); coxa 3 

 bears two spines turned backward. 



Epistoma triangular, pointed anteriorly. — Mandibles without 

 teeth. — The hypostoma was not distinct enough, to give parti- 

 culars. The palps are usual. 



