462 Memoirs of the Indian Museum. [Vol. V, 



species." The specimens sent to me are from Barkuda Island, but without any indi- 

 cation as to whether they were found on the edge of the lake or not. The species, 

 however, is closely allied to H. hispidus, Collinge, which is described as a terrestrial 

 species and its occurrence on the shore of the lake is probably only accidental, as 

 several species of the Oniscidae, though really terrestrial, are sometimes found quite 

 close to high water mark on the sea coast. 



Hemiporcellio carinatus, Collinge and Cubans granulatus , Collinge, are as yet 

 known only from certain localities near Lake Chilka, though they probably occur in 

 other parts of India. The remaining species, Alloniscus pigmentatus, Budde-Lund, if 

 my identification of it is correct, occurs, according to Budde-Iyund, also in Madagascar, 

 where it is common, and in many localities in the East Indies. 



I have referred the four species to species already described but in each of them, 

 particularly in the case of Ligia exotica, I have endeavoured to give information 

 additional to that already published. 



I am much indebted to my assistant, Miss E. M. Herriott, M.A., for the care 

 with which she has drawn the figures illustrating the paper. 



The references are made by the year of publication to the Bibliographical list 

 on p. 480. 



Ligia exotica, Roux. 

 (Figs. 1 to 22). 



Ligia exotica, Roux, 1828. 'Crust. Medit.', livr. 3, pi. xiii, f. 9. 

 ,, Budde-Lund, 1885, p. 266. 

 ,, ,, Dollfus, 1893A, p. 3 (of separate copy). 



„ ,, Dollfus, 1893B, p. 189. 



Dollfus, 1898, p. 381. 

 Stebbing, 1904, p. 718. 

 Stebbing, 1905, p. 57. 

 ,, ,, Budde-Lund, 1912, p. 391. 



Ligia gaudichaudii, Milne-Edwards, 1840, III, p 157. 

 ,, ,, Nicolet, 1849, P- 2 65- 



,, ,, Dana, 1852, p. 741, pi. xlix, fig. 6 a-h. 



Ligyda exotica, Richardson, 1905, p. 676. 



Specimens were obtained from the following localities : — 



Barkul. Lake Chilka, Orissa, 9 — i3-xi-i2 (F. H. Gravely). Several. Serial Number 7. 



Off Barkul, Lake Chilka, Orissa, 21 — 31-VÜ-13 (N. Annaniale). Seven. Serial Number 10, " ~{^.' 



Barkuda I., under stones just above water level. Feb. 1914. Eleven. Station No. 16, " -5-f § V 



This species is very widely distributed on the warmer shores of the Atlantic, 

 Pacific and Indian Oceans, and it has been recorded on the American coast as far south 

 as Chili and Puntarenas. Though it is so common and has been known for many years, 

 it has received only scanty attention at the hands of those who have recorded it, 

 most observers having merely mentioned its occurrence without adding to previous 

 descriptions. It was briefly described by Milne-Edwards in 1840 under the name of 

 Ligia gaudichaudii , and Dana recorded it from various localities under the same name 



