142 Records of the Indian Museum. PViOn Xe VEEL. 
figs. 8-9), which are much shorter and stouter, are distally some- 
what wedge-shaped and irregularly dentate instead of slender and 
pointed, and appear to be without the two small laminar teeth 
found below the molar tooth in the present species and in P. longi- 
cauda and E. vulgata. ‘here is little or no difference between the 
teeth on the right and left mandibles. 
The maxillae (pl. xix, fig. 9) and labium closely resemble those 
of Eaton’s Ceylonese larva but are less pointed, especially the 
maxillary palps. The blade of the maxilla bears two spines dis- 
tally as in Cornelius’s figure of P. longicauda, but the lower one 
is more transparent than the terminal one, and is sometimes very 
hard to distinguish and possibly absent. 
The labial palps (pl. xix, fig. 10) bear a number of transparent 
stout curved spines at the distal extremity and a tuft of spines on 
a tubercle at the base of the penultimate segment. 
The front legs (pl. xviii-xix, figs. 8 and 11) are clothed with 
hairs and spines arranged in very definite series. ‘The transverse 
line of hairs at the base of the femur and the two transverse lines 
at the base of the tibia are finely pectinate (pl. xix, fig. 14). The 
lateral filaments on these hairs are extremely minute, but probably 
form two series more nearly at right angles to each other thanin one 
plane. The ventral aspect of the outer distal angle of the tibia bears 
a group of strong spines of which the outermost half are somewhat 
less stout than the innermost, and are coarsely biserrate Owing, 
however, to the angle which the two rows of serrations bear to one 
another not more than one of them can be clearly seen from any 
one point of view (pl. xix, fig. 12). The tarsus bears a number of 
more slender biserrate spines below its outer margin. Their serra- 
tions are more nearly in one plane (pl. xix, fig. 13). The remaining 
hairs and spines are simple. 
On the last two pairs of legs the lines of pectinate hairs are absent, 
and there are no serrate spines, simple spines and hairs being more 
extensively distributed in place of them. The spines are strongest and 
most numerous on the third pair of legs. Except for a group of 
very stout curved spines of moderate length on the ventral aspect 
of the outer distal angle of the tibia, the spines are confined to the 
dorsal surface (pl. xix, figs. 15-16). 
The first abdominal segment bears a pair of gills but no protec- 
tive lamella. The five following segments bear both gills and 
lamellae. The three remaining segments are without appendages. 
The first two of these bear spines and hairs laterally. The last 
has hairs distributed over almost the whole of its dorsal surface; 
these hairs are thick behind, but there are no spines at all com- 
parable in strength with those on the two preceding segments. 
Each gill consists of two plumes, one situated behind and to 
the inner side of the other. The former is of about equal size on 
all segments, and being directed backwards it conceals the latter, 
which is considerably smaller—more so in the anterior than in the 
posterior segments. 
All five protective lamellae are of about equal size. Each 
