270 



L. A. BORRADAILE. 



The form of the carapace, the presence of endostomial ridges and the symbiotic habits 

 recall Quadrella. The front and 

 the spinate region at the side of 

 the granulated carapace, and again 

 the endostomial ridges, show a cer- 

 tain resemblance to Caecopilunmus 

 described above, though the eyes 

 and orbits are very different. The 

 form of the antennae points to its 

 true position being among the Me- 

 nippinae, perhaps in the neighbour- 

 hood of Pilumnus. 



2. Maldivia symbiotica, n. sp. 

 (Fig. 60). 



Diagnosis : " A Maldivia whose 

 carapace is roughened with small 

 tubercles, which in places, as on 

 the anterolateral edge, pass into 

 spines; the latter edge with four 

 lobes, including the orbital lobe, 

 each lobe bearing several spines, of 

 which one is larger than the rest, 



while the lobes decrease in size from behind forwards; the chelipeds equal, bearing on the 

 outside spines set in rows, a row along the upper edge being specially long, the fingers shorter 

 than the hand; the walking legs moderately stout, bearing some long hairs." 



Length : 1-5 mm. Breadth : IQ mm. Colour in spirit : white. 



Fig. 60. Maldivia symhiotica, found on a gorgonian, whole animal 

 greatly enlarged. 



Family Atelecyclidae. 



Subfamily Thiinae. 



Genus Kraussia Dana, 1852. 



1. Kraussia rugulosa (Krauss), 1843. 



Kraussia rugulosa, Dana, U.S. Expl. Expd. Crust, p. 302, pi. 19, fig. 1 (1852). 

 Taken on the reef in Male, Goifurfehendu and Minikoi Atolls. 



2. Kraussia integra (de Haan), 1837. Alcock, I v. p. 97. 



A small specimen from Mahlos Atoll shows characters which recall K. nitida Stimps., 

 1858, in that the frontal lobes are subdivided, though not so deeply as in Stimpson's species, 

 and the carajjace is somewhat narrower than in adult specimens of K. integra. The teeth 

 on the dactylopodites of the legs are small. 



Taken on the reef in Male and dredged in 24 fathoms in Mahlos Atoll. 



