MENOETHIUS MONOCEROS. 471 



NOTE XXI. 



ON SOME PODOPHTHALMOUS CRUSTACEA, 



PRESENTED TO THE LEYDEN MUSEUM 



BY M^ J. A. KRUYT, COLLECTED IN THE RED 



SEA NEAR THE CITY OE DJEDDAH. 



BY 



Dr. J. G. DE MAN. 



TJie carcinological collections of the Leyden Museum 

 consist, besides of the European types, chiefly of forms 

 from the East Indies and from the Japanese seas, the 

 former being collected by the various travellers of our 

 establishment, the latter being the types of the celebrated 

 work of Mr. de Haau. We cannot therefore be too 

 grateful to have found in Mr. J. A. Kruyt, Dutch Consul 

 at Djeddahj Arabia, a man, who purposes to collect the 

 Fauna of the Red Sea for the Museum. He already has 

 made an interesting beginning, by presenting to us a re- 

 markable collection of fishes and invertebrate animals ; it 

 is of the carcinological part of the latter that I may be 

 allowed to say a few words. 



1. Menoethius monoceros (Latr.) M. Edw. 



A male and a female were collected j in the male spe- 

 cimen the tubercles of the upper surface of the carapace 

 are much less developed than in the female. 



Notes from the I-(eytlen IMuseum, Vol. II. 



