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



The fillet is attached near the base of the lobe, and projects outwards, in front of it. 

 There is a single colourless spine, one capillary seta and one crochet above the spine, 

 and one crochet below. This capillary seta persists in all the feet. 



The anus is terminal. On its ventral margin are the remains of 4 short stumpy 

 cirri, the upper pair being the longer. The capillary setae (figs. 15J, 151,) have 

 broad wings which tend to curve inwards, so that frequently only one is visible. 

 They are obliquely striated, and taper to a slender tip. In the posterior feet the 

 wings are broader than those in the anterior feet. The crochets (fig. 15K) have 

 each two broad wings over the tip, with delicate oblique striations. The boldly 

 curved terminal tooth has a crown of 6-10 slender spines. 



The mandibles (fig. 15E) are fused throughout their whole length. The biting 

 plate is composed of 5 or 6 half-rings. The shafts are striated longitudinally and 

 also obliquely. The whole structure is very delicate and the edges are so thin that it 

 is impossible to indicate the precise shape. The forcipate processes of the maxillae 

 are normal in size and shape, and are equal in length to the posterior processes or 

 " supports ", which have a distinct waist. Lying alongside the forcipate processes are 

 two narrow dotted strips of chitin. The main dental plates are each composed of a 

 dark-coloured ventral part, rather narrow and bearing teeth, and a larger and paler 

 reflexed plate lying above it. There are 5 teeth on the right side, 4 on the left. 

 The 3rd pair of jaws have bifid tips, and the 4th pair strong simple tips. Fig. 15D 

 shows them after they have been flattened. Lying alongside the 3rd and 4th pairs 

 are two rectangular dotted plates. 



This species is characterised by the very slender elongate body, the structure of 

 the jaws, the shape of the head and setae, and the presence of capillary setae in all 

 the feet. 



In the shape of the jaws it resembles the L„ tetraura (Schmarda) as described by 

 Ehlers (1901, p. 137), but the two species differ widely in the distribution of the capil- 

 lary setae and crochets. In the form of the setae, and in having two teeth on the 

 3rd pair of jaws, it resembles L. inclica, Kinberg (1910, p. 48), from the Bangka Straits, 

 but differs in having only a single tooth on the 4th pair of jaws, and in the presence 

 of capillary setae in the posterior segments, etc. This species rather closely resembles 

 the L. heteropoda of Marenzeller (1879, p. 30), from Japan. The latter differs in 

 having a longer and more pointed head, shorter and broader body, with fewer seg- 

 ments, feet of somewhat different shape, and in the relative length of the two lobes. 

 In the middle of the body the foot of L. heteropoda carries a rudimentary dorsal lobe 

 with a few simple setae embedded in the tissues. The capillary setae are distributed 

 as in the present species, and occur in the posterior feet. The jaws are similar as a 

 whole, but differ in details, especially in the shape of the maxillae and mandibles. The 

 tips of the crochets also differ. 



Habitat. — A single entire individual and a fragment of a second were obtained by 

 digging in sand just above high- water mark on the shore of Chiriya Island, in the 

 south-western extremity of the Chilka Lake. They were collected during the salt- 

 water season, in February, and the saline of the adjacent water was i - oii. 



