ARAEOSTERNUS WIENECKIt. 431 



Pag. varipes Heller being found in the Red Sea and in 

 the sea of the Moluccas will therefore probably occur also 

 throughout the whole Indian Oceau. 

 Dimensions of the Banda-Neira specimen : 

 Width of anterior margin of carapace 11 mm. 

 Distance from anterior margin to cervical suture 13 mm. 

 Length of eye-peduncles (basal scales included) 8'/2 mm. 

 Length of the larger hand 27 mm. 

 Length of the tarsus of the third left pair 25 mm. 



Araeosternus loieneckii nov. Gren. Nov. Spec. 

 A new form of the Family of Loricata, 



This very interesting new form which I wish to give 

 the name of Araeosternus on account of its narrow ster- 

 num , belongs without any doubt to the Family of Lori- 

 cata (Scyllarides, Palinurides). As regards its generic cha- 

 racteristics , it is nearly allied to the genus Palinurus Fabr. 

 s. s. (Palinuri communes Edw.), but differs so remarkably 

 by the structure of the cephalothorax , the shape of the 

 front and the form of the sternum, that henceforth it 

 must represent a new subfamily equal in value to that 

 of the Scyllaridae and Palinuridae. 



The cephalothorax has an elongate subcylindrical shape; 

 the upper surface has an elongate rectangular form , its 

 greatest breadth, that is found a little behind the cervical 

 groove , being in proportion to the length as 5:8; the 

 cervical groove is found a little behind the middle , the 

 lateral portions of which run downwards and forwards 

 towards the anterior part of the autennary sternum ; bran- 

 chiocardiac grooves very faintly marked ; close before and 

 parallel to the curved posterior margin of the upper sur- 

 face of the cephalothorax occurs a very deep , smooth 

 groove. — The cephalostegite or that part of the surface of 

 the carapace which lies before the cervical groove is con- 

 vex longitudinally , the omostegite nearly straight ; the 

 whole surface however very convex transversily , the lateral 



Notes from the Leyden ÜMuisevim , Vol. lU. 



