34 (de. a. c. oudemans). new list or dutch acabi, ii. 



The dorsal side (Fig. 54) shows two shields, of which the posterior 

 one is much smaller and more triangular than the anterior one. 



The hairs on the posterior dorsal shield are smaller than those 

 of P. Jmornm (de Geer). The posterior dorsal shield is surrounded 

 by short and stiff bristles. 



The ventral side (Fig. 55) differs from that oî ParasHus Jucoriim 

 (de Geer) by having no dark anterior portion of the sternal shield. 



The epistoma (Fig. 56) is rounded , there is scarcely a lateral 

 tooth visible. 



The mandibles lack the singular hyaline apophysis, so characteristic 

 n P. fiicorum (de; Geer). 



The hypostoma is formed also quite otherwise (Fig. 57). The two 

 horns are at their base covered by a portion of the inner mala ., 

 whereas in P. fucoruni the whole horn is covered by it (N. B. very 

 imperfectly delineated by Berlese 1). 



The legs resemble those of P. fiicorum (de Geer). 



Length 1050 ,«. — Colour pale, like V. facorum (de Geer). 



39. Parasitus cornutus (G. et B. Can.). 



(With Plate 4, fig. 58—68). 



Larva. Length 195 /<. — Colour yellow. — ^yjÌ6'/owa resembling 

 that of the male ; distribution of hairs like that of adults ; hairs 

 on legs longer and more flexible. 



Nympha I — Length 360 ,«'. — Colour paler than in the larva. — 

 Epistoma normal; hairs on dorsum hristly, remembering strongly 

 of those of the adult, but longer and slightly curved ; those of 

 the shoulders elegantly curved forward. 



'Nympha II. — Length 510 ,«. — Colour pale yellow ; animal 

 much resembling nympha I. 



Nympha III. — Length 685 ^«. — Colour pale yellowish brown. — 

 The animal still more resembles the adult form. 



Fig. 58 and 59 represent nymphal epistomala. 



