178 TR.VPEZIA FERRUGINEA.. 



with 5 — 6 sharp serrate teeth; the arms project very much 

 beyond the lateral margins of the carapace. 



The Leydeu Museum contains specimens of this species 

 from the Red Sea , as also from the Indian seas (Amboina , 

 Manipa , Xulla-Bessy) , which entirely agree with each 

 other. We have also received two specimens from New- 

 Caledonia , presented by Alph. Milne Edwards under the 

 name of Trap, dentata M'Leay (Nouv. Archiv. du Musee 

 t. IX , pag. 261), Avhich also agree completely Avith our 

 species, so that Trap, dentata A. M. Edw. is identical with 

 Trap, cymodoce Herbst. But Jrap. cymodoce A. M. Edw. 

 is identical with Trap, ferruginea Latr. Our species is 

 positively the true cymodoce Herbst and the latter is 

 identical with Tra^. coerulea Rupp., 1". because the teeth 

 of the front project more or less in the several indi- 

 viduals, because the number of the teeth on the ante- 

 rior margin of the arms varies from 5 — 7 and because 

 the colour, at least of specimens preserved in spirits, is 

 of no use in characterizing the species , some of our speci- 

 mens having a bluish gray coloured carapace', others a 

 reddish brown, others again a yellowish brown coloured. 

 But always the tooth on the lateral margin of the carapace 

 is sharp and acute, the upper part of the outer surface 

 of the hands is hairy and the inner angle of the carpo- 

 podite has a blunt tubercle. It may also be remarked, 

 that the description given by Gerstaecker of the species 

 of Herbst is taken from the single original specimen, the 

 frontal teeth of which are somewhat less prominent than 

 in the typical specimens. 



12. Trapezia ferruginea (Latr.) Heller. 

 Heller, 1. c. pag. 349. — Miers, 1. c. pag. 407. 



Fifteen very fine specimens (12 Q, 3 rf) were collected 

 in the Djeddah sea. This species has quite the facies of 

 Trap, cymodoce Herbst , but may be recognized by the fol- 

 lowing characteristics. The lateral margins of the carapace 



Notes from tlie Leyden ^Iiiseuna, Vol. U. 



