(du. a. c. oudemans). notes on acaki. 143 



In many particularities this larva (Fig. 39) resembles that of 

 Tr. gi/7miopterontm (L). I can nothing say about the pseudostig- 

 matic organs, as they were wanting. 



These is but one dorsal shield, with 5 hairs and 2 pseudo- 

 stigmata, the situation of which is perfectly as in the named 

 larva. On the back there are only four transversal rows of four 

 hairs each. All the hairs of the body are thick and feathered (Fig. 40), 

 The body does not show any deep fold or segmentation. There are 

 so far as I could observe only hvo eyes. The maxillar palp (Fig. 41) 

 ends in a bifid claw. I did not observe a fifth joint appending to 

 the fourth claw-bearing one. The second joint projects with an 

 angle sidewards (Fig. 41 represents the ventral face of left palp). 

 The ventral face of the body (Fig. 42) shows also less hairs than 

 in the above named larva. — The middle claw is twice thinner 

 the lateral ones. 



22. Key to the species of Thrombidium F. 



Larvae. 



1. 



Two dorsal shields . . 



One dorsal shield . . 



Q { On each side one eye . 



' On each side two eyes. 



o ( Psdst. org. filiform . . 



' Psdst. org. davate . 



. Thp. holosericeum (L.) 

 . 2 



. Thr. russicum Oudms. 

 . 4 



. Thr. gymnopterorum (L.) 

 . Thr.BerleseiOudms.nov.nom. 

 (Beri., Trom. Tab. XVI). 



23. Eremaeus hessei Oudms., nov. sp. 



(With Plate 12 fig. 43). 



Length 520 ^. — Colour tawny. — Shape resembling Eremaeus 

 tibialis (Nie.) — Dorsal side (Fig. 43). Rostrum blunt ; céphalothorax 

 usual shaped, with parabolic outlines; tectopedia 1 large ; tectopedia 

 2 short ; lamellae blades ; translamella a distict blade , as wide as 

 the lamellae; lamellar cusps distinct, ending in a stiff lamellar hair. 

 Interlamellar hairs a good distance before the demarcation between 



