M. A. Stecker on a new G%nus of Aracknida. 233 



ceplialothorax of some Chernetid^ *. These may be regarded, 

 as already noticed by Dr. Joseph {loc, cit. p. 242) and myself 

 {loc. cit. p. 3), as an indication of a separation of the head from 

 the thorax ; in this case the portion between the elevation and 

 the anterior margin of the cephalothorax would have to be 

 designated the cephalic part ; and the other part, extending 

 between the ridge and the hinder margin of the cephalothorax, 

 as the pro-, meso-, and metathorax. Seen from the ventral side, 

 therefore, the chelicera and the first and second pairs of maxil- 

 lary palpi are attached to the head, and to the thoracal part 

 the three pairs of legs. Dr. Joseph's definition of the cephalic 

 division as " only reaching to the anterior margin of the first 

 hypopodia " seems to me in some degree misatisfactory, as we 

 may understand by the anterior margin of the first hypopodia 

 either the hypopodia of the second pair of maxillary palpi 

 (representing the first pair of legs) , or the pectoral piece of the 

 first pair of legs (representing the second pair of legs). 



The four eyes (F), placed on obliquely ascending conical 

 tubercles, are situated on the sides of the cephalothorax, so that 



the first pair rises nearly at the end of the first third of the cepha- 

 lothorax, consequently between the pectoral pieces of the first 

 and second pairs of maxillary palpi ; and the second pair about 

 in the middle of the margin of the cephalothorax, and there- 

 fore between the second pair of maxillary palpi and the first 



* L. Koch, ' Uebersichtliche Darstellung der europ. Chernetiden," 

 Niirnberg, 1873, p. 11 ; A. Stecker, " Ueber zweifelhafte Chernetiden- 

 Arten, welche von A. Menge beschrieben wurden," Deutsche eutom. 

 Zeitschr. Bd. xix. (1875) Heft 2. 



Ann. do Mq^. N. Hist. Ser. 4. Vol. xvii. 16 



