156 OCYPODE AFRICANA DE MAN. 



Species of Ocypodo in: Annals and Magazine of Natural 

 History, for Novemb. 1882, pag. 386 



Mr. Miers in his recent Note on the species of Ocypode 

 in the collection of the British Museum , regards my new 

 Ocypode africana as doubtfully distinct from the Indian 

 Ocypode Kuhlii de Haan and supposes it to be a mere 

 variety of the latter. This doubt may have arisen from 

 my not having compared these two very distinct species 

 with one another : I only compared the african species 

 with Ocyp. eordimana Latr. I did so , even because Ocyp. 

 africana extremely resembles Ocyp. eordimana , whilst the 

 former species m.ay he distinguished at first sight from Ocyp, 

 Kuhlii de Haan by the quite different shape of the cara- 

 pace etc. 



Ocyp. africana was described after a single male speci- 

 men from the Congo coast, presented by my cousin, Mr. 

 P. Kamerman to the Museum. Now we lately received 

 from him still eight specimens , collected at Muserra , Congo , 

 whilst the Museum was enriched moreover by twenty 

 specimens, that were collected at Grand Cape Mount, 

 Liberia , by Mr. Biittikofer , among which also many beau- 

 tiful adult females and males occur. I will therefore 

 complete my former description and furthermore give up 

 the differences of Ocyp. africana and Ocyp. Kuhlii de Haan. — 



The females that we received, had a somewhat larger 

 size than the males, but did for the rest wholly agree 

 with them. 



As regards the general shape of the upper surface of 

 the carapace , the lateral margins are much more convexly 

 arched outwards in Ocyp. Kuhlii than in Ocyp. africana , 

 and the very acute external orbital angle extends much 

 beyond the rounded prominence of the supraorbital mar- 

 gin, being directed outwards in the Indian Oc/jp. Kuhlii, 

 whilst it extends only as far as that prominence in the 

 Ocyp. africana , being moreover directed inward. The front 

 is arcuated and enlarged anteriorly in the Indian , not en- 

 larged, but provided with convexly arched converging mar- 

 Notes from the Leyden ÜVIiiseuiii , "Vol. "V. 



