TEEKESTRIAL ISOPODA OF NATAL. 473 



So fai* as I am aware none of tlie.se have been adequately 

 described or figured. 



For the specimens of L. dilatata I am indebted to the 

 kindness of Mr. Keppel H. Barnard, of the South African 

 Museum ; the rest of the material has been obtained by Dr. 

 Conrad Akerman. 



Brandt's desci'iptions are very short, and as his Avork is not 

 readily accessible I repeat them here : 



a. Corpoi^e oblongo. 

 Ligia glabrata n. sjy. Antennarum articuli apicales 

 margine superiore ciliati. Appendicum caudalium 

 articulus basalis tetragono-oblongus, hand iinpressus. 

 Patria : Caput bona3 spei. 



/3. Corpore ovato. 

 Ligia dilatata n. iip. Appendicum caudalium articulus 

 basalis mediocris, tetragono-oblongus. 

 Patria : Caput bonaj spei. 



Krauss (4) gives the size of L. glabrata as 11 lines in 

 length and 5*5 in breadth. 



In 1885 Budde-Lund re-described both species, but his 

 material seems to have been poor. He further very briefly 

 described a new species under the name of Ligia graci- 

 lipes, from a few specimens in the Simon Museum, obtained 

 at Laudana. 



The question naturally arises, " Ai-e these three referable 

 to one species or are they distinct from one another ? " The 

 material I have examined helps us to answer partly this 

 question. 



There is no doubt as to Brandt's L. dilatata. His L. 

 glabrata, I am inclined to think, is only an immature form of 

 the former, whilst Budde-Lund's gracilipes is insufficient!}" 

 described to pronounce an opinion on. The onh' two state- 

 ments of any value which this author gives are that the 

 flagellum of the antenna contains 22 joints and that the 

 animal is from 7-9 mm. long. Possibly gracilipes is only a 

 young form of some species. In comparing it with specimens 



