202 Journal New York Entomological Society, [Vol. xxiii, 



Abdomen. — In life dark green with a distinct reddish tinge espe- 

 cially on the dorsal side; gills pale reddish; each lateral hump is 

 tipped with a circular spot of small spines, near the center of the spot 

 there is a seta; the dorsal hump ends in a pointed finger-like process; 

 the lateral fringe commences at the middle of the third segment and 

 extends to the caudal margin of the eighth segment, where it ends 

 on a backward projecting lobe, the fringe is weak and composed of 

 very fine hairs ; the arrangement of gills is diagrammatically shown 

 in pi. i6, fig. 13, the gills of the median line possess hairs, continua- 

 tions of the lateral fringe; the ninth segment, as seen from above, 

 projects backward as a prominent lobe which bears a chitinous plate 

 and is armed on its caudal margin with four well-developed setse 

 and several of smaller size; on the fleshy projection above each drag- 

 hook there are three large and several small setse ; the drag-hooks 

 bear one large and apparently three small hooks on the dorsal side, 

 pi. 15, fig. 2, illustrates a drag-hook with only the largest of its three 

 teeth showing, the others being hidden behind this one. 



Pupa. — Description made from a cast skin. The mouthparts are 

 weakly chitinized, the labrum is rectangular with rounded corners, 

 about one and a half times as long as wide; the mandibles are about 

 half the length of the labrum and are almost as broad as long, a 

 projection on the outer side bears two prominent setse on its tip; the 

 lateral fringe commences on the cephalic margin of the fifth ab- 

 dominal segment and loops under the caudal margin of the eighth 

 segment; a pair of sucker-like disks occur at the caudal margin of 

 the last abdominal segment above. Each disk has a single seta on 

 its outer margin and a group of three large setse beneath its cephalic 

 margin; the first abdominal segment has a striate appearance above 

 and is bordered behind by a mark, as in pi. 16, fig. 5; the arrange- 

 ment of teeth on the dorsal plates is illustrated in pi. 16, fig. 5. 



The Case. — Length 30-40 mm. ; breadth about 5 mm. In form 

 it is a slightly curved cylinder, tapering a very little toward the rear 

 end. It is built of quadilateral sections of leaves arranged in a 

 series of three to five circles. The inside is lined with a thin layer of 

 silk. The case is light in weight and is easily dragged about by its 

 active occupant who, on very slight provocation, will quit the case 

 entirely. 



We are unable to give characters for separating the case of this 

 species from those of other species of the genus. 



