968 Charles Paul Alexander 



to the writer by Dr. Cameron, a few details being added from Dr. Cameron's 

 published notes. 



Larva. — Length, 15-17 mm. 



Width, d.-s., 2.4-2.5 mm. 

 Depth, d.-v., 1.5 mm. 



Coloration light chlorophyll green, with two narrow, pale brown lines on dorsum, extending 

 from posterior end, above spiracles, anteriorly, becoming more expanded and diffused on 

 fore part of body. 



Body very depressed, both dorsal and ventral surfaces being flattened, lateral margins - 

 sharp (Plate LXXXIV, 453). Head completely retractile within prothorax. Skin delicately 

 reticulated and roughened. Thorax, viewed from above, semicircular in outline, margined 

 with about four tubercles on either side, anterior pair the largest, separated by a V-shaped 

 notch. Pronotum with an anterior pair of small tubercles and a larger median tubercle 

 behind, directed backward; segments 2 and 3 each with lateral margins two-toothed, the 

 anterior tooth the larger and more pointed; a blunt dorsal tubercle on anterior margin and 

 a larger one behind. Abdominal segments indistinctly divided into four annuh which are 

 poorly delimited; the two basal annuli narrow and corresponding to basal annulus of most 

 crane-fly larvae, the third annulus the largest and bearing a slender lateral tooth; other 

 segments less distinctly divided serrately on lateral margin; dorsum of abdominal segments 

 with a row of blunt median tubercles, there being four on each segment, the first very small 

 to vestigial, the third slender, the last the stoutest; on venter of abdominal segments 1 to 

 7, near posterior margin, a fleshy conical lobe (pseudopodium) on either side of median line, 

 these being smaller on anterior segments (1 to 4), and much larger and paler on posterior 

 segments (5 to 7). Spiracular disk very large and flattened, obliquely truncated, surrounded 

 by six small lobes, the dorso-lateral pair small, widely separated, the ventro-lateral pair 

 much larger, the ventral pair very small, slender. Spiracles very small, circular, widely 

 separated, the distance between them about equal to six times diameter of one. 



Mouth parts with labrum linguliform, terminating in four teeth, external pair smaller 

 than internal pair. Mentum with seven teeth on either side of small median one, the first 

 and the third on either side being the largest. Hypopharynx with two rows of small teeth. 

 Antenna two-segmented; basal segment elongate, pyriform; apical segment thimble-shaped. 

 Mandible (Plate LXXXIV, 454) powerful; cutting edge with about five marginal teeth and 

 two dorsal teeth; a large basal prostheca. Maxilla large; outer lobe fringed with stiff hairs; 

 a few acute sensory bristles situated on elevated papillae, two on cardo, one on outer lobe 

 of maxilla; maxillary palpi short, cylindrical, apex obUquely truncated and provided with 

 numerous sensory knobs, on side near tip a circular porous plate (which as it appears in 

 Phalacrocera is suggested by Bengtsson as probably being an organ of hearing). 



Pupa. — Length, 11.7-14 ram. 



Width, d.-s., 2-2.8 mm. 

 Depth, d.-v., 1.4-2 mm. 



Color of live pupa, leaf green; preserved specimens much paler, yellowish; pronotal 

 breathing horns grayish white; margins of abdomen nearly translucent. 



I 



