70 



ON THE BRACHYUROUS DECAPODS OF THE CAPE. 



Stirps. CALAPPINA. 

 Fam. MATUTIDiE. 



Genus. MATUTINUS. 



Sub-genus. Matuta, Fab. 

 Sp. S3. (Matutinus) Matuta Victor, Fab. 



Matuta victor, M. E. Hist. Nat. des Crust, vol. ii. p. 115. tab. 20. fig. 3 and 6. 



Note. I agree entirely with my lamented friend Dr. Leach in thinking, that there are many 

 species confounded together under the name of Matuta victor. I do not consider the above 

 names of the family and genus to possess any authority, and merely publish them in order that 

 the reader may understand the relation which the sub-genus bears to the stirps Calappina. 



Stirps. LEUCOSINA. 



Here likewise I shall not pretend to characterize the families, or to describe the genera of a 

 stirps in which so few species are as yet known; but shall merely content myself with the 

 following description of the only sub-genus of the groupe which is known to be found at 

 the Cape of Good Hope : — 



Suh-genus. Leucisca, M'L. 

 Bodg in front slender and compressed, but behind thick. 



Cephalothorax smooth, plane, depressed, sub-elliptical, broader than long, and having a thin 

 reflexed margin; while the clypeus is advanced with a round sub-reflexed apex, which is 

 scarcely emarginate. 



Orbits small, sub-circular, and hidden under the clypeus; while the eyes are deeply set, very 



minute and globose. 

 Exterior Antennce very small and rather tri-articidate. 

 Interior AntenncB hidden under the clypeus in transverse reniform fossulee. 

 External Pedipalpi very large, and closing a triangular buccal cavity; their second joint is 



oblong, quadrate, and broader in front than the third, which is triangular, with a sharp 



point, while the external palpus is lunate. 

 Feet; first, second, and third pairs have been lost in the only specimen before me; but the 



two remaining pair are short, and all are inserted under the margin of the cephalothorax. 

 Abdomen of the female with four segments. 



The nearest crab to this is one from the Red Sea, which is described by Riippell under the 

 name of Oreophorus horridus. Both come near to Calappina. 



Sp. 34. ( ) Leucisca squalina, n. s. tX-.JjT 



Descr. Leucisca alba, dorso medio convexiusculo, oculis glaucis, pedipalpis externis palpisque 

 margine externo granulatis, pedibus articulo quarto extus sulcato, unguibus longis acutis. 

 Note. The length of this curious little crab is only about three lines ; and my specimen is 

 much injured, having lost the chelee, and several other of the feet. The abdomen also is 

 in a damaged state. 



