Vol. xxii] ENTOMOLOGICAL NEWS 53 



Maxillae with the inner lobe attenuate at tip, which bears three 

 short internal teeth, and three long, slender, curved, internal processes 

 and a row of strong setae. (PL III, figs. 29, 31). Lubiitm, when fold- 

 ed at rest, reaching back to the bases of the prothoracic legs but not 

 as far as the hind ventral prothoracic margin ; median (mental) lobe 

 but very slightly produced distad in the middle and with a very slight 

 median cleft, distal margin crenulate with a very short seta between 

 each crenulation and its neighbor; just within the crenulations a short 

 distance on each side of the median cleft is a small pointed tooth (fig. 

 28, /*) on the dorsal surface; mental setae few (2-4 on each side of 

 the median line both on dorsal and ventral surfaces) and short; lateral 

 lobes with a long curved tapering terminal spine and three distal 

 teeth of which the most internal (mesial) is shortest and is truncate 

 while the other two are pointed. (PI. Ill, figs. 27, 28, 30). 



Prothorax with three lateral tubercles, a dorso-lateral (a) which 

 is dorsal to an antero-lateral (b) and, posterior to (b), a postero-later- 

 al (c). On the mesothorax the place of a of the prothorax is occupied 

 by the spiracle, b is present while c is represented by a double tubercle. 

 None of these tubercles are represented on the metathorax which has an 

 indistinct spiracle on its lateral surface (PI. II, 14, msp). Front wing 

 pads reach to the hind end of abdominal segment 6 in larva No. I, to 

 the hind end of segment 4 in larvae Xos. 3 and 4. Hind wing-pads reach 

 almost to the mid-length of segment 7 in larva No. i, to mid-length of 

 segment 5 in Nos. 3 and 4. (In PI. II, fig. 14, the wing-pads have been 

 divaricated and are not in exactly normal positions, hence the difference 

 between the preceding sentence and the figure). Legs not of a burrow- 

 ing type, tarsi 3-jointed with an empodium-like structure (PI. II, figs. 



6. 12). 



Abdomen triangular in cross-section, of ten complete segments, 

 which decrease slightly in width from I to 8; 9 and 10 distinctly narrow- 

 er owing to their lateral margins not being produced laterad as far as 

 on the segments preceding (PI. II, fig. 15). A curved, caudad-directed, 

 mid-dorsal hook on segments 2-9 (larva No. i) or 1-9 (larvae Nos. 3 

 and 4), hooks increasing in length from segment i or 2 to segment 7 

 or 8, that of 9 slightly shorter than that of 8. (PI. II, fig. 14). Hind 

 dorsal margin of segment 10 with a wide median notch whose depth 

 is half, or less than half, the length of the segment. (PI. II, fig. 8). 

 Segments 2-7 each with a pair of tapering, finger-like ventral gills. 

 Rudiments of $ genitalia on the ventral side of segment 2 indistinct 

 in larva No. i ; in larva No. 3 they consist of two distinct black lines 

 reaching from the intersegmental groove of 1-2 to behind the hind end 

 of the sternite of 2. Rudiments of $ gonapophyses are present on 

 segment 9 of larvae Nos. I and 3 (PI. II, fig. 18). Rudiments of $ 

 gonapophyses are shown in PI. II, figs. 7, 8, 14, 15. 



