16 ARKIV FÖR ZOOLOGI. BAND 7. NO 12. 



The diagnosis is a follows: »Scutum dorsuale integrum. 

 Foeminse sternum in duas partes laterales divisum, fere eva- 

 nidum. Rima genitalis (foem.) in arcum, in ter secundos pedes 

 aperta. Ceterum abdomen, inferne scuto iinieo protectum. 

 Postice, ad latera ani, foramina dua conspiciuntur, operculo 

 quodam mobili occludenda, disculis sarcoptidarum similia, et 

 cuius naturam minus bene intellexi. Peritremata longa usque 

 ad secundi paris pedes producta. Rostrum minuseulum, palpis 

 deformatis, quinquearticulatis, articulo postremo tentaculi- 

 formi, plicato, clavato et setoso, omnino tentaculo Trombidi- 

 darum simili. Pedes antici ambulacrati, sed tarso curtissimo, 

 ceteris segmentis longe et robuste spinosis. Ungues ambu- 

 lacrorum evanidi.» 



If we examine Berlese's drawings [fig. 1 Pl. 9], it becomes 

 evident that what he considers to be the two halves of the 

 sternal shield is in reality nothing else than a pair of well 

 developed jugular shields. They are placed even more late- 

 rally than these usually are and have a position between coxae 



I and II. It is true that in some genera, especially in the 

 Antennophorince, the sternal shield is divided into two, but the 

 position of these is always the same as that of the undivided 

 sternum, viz„ in the middle of the ventral side, between coxae 



II and III resp. 



Furthermore, as already pointed out above (p. 9), the 

 last joint of legs I is not the tarsus, but only a part of the 

 tarsus, the real tarsus being divided into two joints, and the 

 terminal joint is consequently equivalent to the telotarsus, 

 which occurs in the nymphal stage of some genera (vide 

 above p. 9). 



On examining Berlese's figures we notice also the foUow- 

 ing features, which are omitted in the diagnosis, but are 

 nevertheless worth while pointing out. The coxse seem to 

 be large in comparison with the trochanters and almost semi- 

 spherical; a pair of small metapodial shields exist. 



Very remarkable features are further the two small discs, 

 found on both sides of the anal aperture, and the very narrow 

 elongated chela mandibuli, as w^ell as the pedunculate 5th joint 

 of the palpi [figs. 1 d, 1 e, 1 f. Pl. 9]. 



As to the systematic position of the genus, Berlese seems 

 to be quite at a loss, he says (p. 207) »Paradoxam hane spe- 

 ciem et genus, ubi in systemate introducam, nescio, nisi prope 

 Antennophoros et Iphiopsides». 



