180 TETRALIA CAVIMAXA. 



inermis) A. Miliie Edwards to be only a diversely co- 

 loured, perhaps local variety of Trap. Jerruginea. 



13. Tetralia cavimana Heller. 

 Heller, 1. c. pag. 353. 



A. fine female specimen of this species was found at 

 Djeddah ; it is characterized by the deep hairy groove on the 

 outer surface of the larger hand. — The carapace is 17 m.m. 

 broad and 14 m.m. long. — A. Milne Edwards presumes 

 this species to be identical with Tetralia glaberrima Herbst. 



14. Thalamita prymna Herbst. 



Alph. Milne Edwards, Arch, du Mus. X, pag. 360. 



There are 7 specimens in the collection. In all these 

 specimens the fourth tooth of the lateral margins of the 

 carapace is rudimentary and the fifth or last tooth a little 

 smaller than the three anterior ones. In young specimens, 

 which have a carapace of a breadth of less than 45 m.m., there 

 is found no crest between the elevated ridge , found on the 

 outer surface of the hands near the inferior margin and 

 which proceeds to the tip of the immobile finger , and the 

 spines of the upper surface; such a crest then appears gra- 

 dually, so that specimens, in which the carapace is 65 m.m 

 broad, show already a granulated crest on the middle of 

 the outer surface of the hands. The basal joint of the 

 external antennae is provided with a short high crest near 

 the antennae , which is armed with two or three sharp spines. 



15. Thalamita savignyi A. Milne Edw. 

 Thalamita admete ^ Audouin, Egypte, Crustacés, par 

 Savigny, PI. IV, fig. 4. — Alph. Milne Edwards, Archiv 

 du Mus. X. pag. 357. — 



A fine specimen was found at Djeddah, a female pro- 

 vided with eggs, having a carapace of 31 m.m. Ijroad and 

 19 m.m. long. — Upper surface of the cephalothorax a 



Notes ironi the Leyden Museum, "Vol. U. 



