MARINE CADDIS-PLY FROM NEW Z^SJuXSD. 



419 



are not discernible. The pronotuin is narrow and transverse, 

 but with the anterior angles Fig. 2. 



much produced ; the colour 

 is testaceous, mottled with 

 paler ; fringed with long 

 hairs. Mesonotum similar 

 in form, but somewhat 

 broader, and the angles less 

 produced ; almost entirely 

 pale yellowish, slightly mot- 

 tled with testaceous ; less 

 chitinous than either the 

 head or pronotum. Meta- 

 notum the broadest segment 

 of the thorax, scarcely chiti- 

 nous ; the sides apparently 

 with a hair-bearing tubercle. 

 Leo-s wholly bright yellow A. Head of pupa, above. B. Same, beneath . 

 the anterior pair short, the two other pairs longer (not extra- 

 ordinarily long) and nearly equal. All the legs are simple 

 (without teeth or spines), and present nothing 

 unusual in form ; the claw very long and curved. 

 Abdominal segments having the sides nearly 

 parallel, apparently bright yellow in life ; ter- 

 minal segment dilated, its posterior margin 

 angular and notched in the middle. Anal claw 

 (fig. 1, C) very short, piceous, much curved, and 

 seated on a strong protuberance ; on either 

 side of the posterior margin of the anal segment 

 is a tuft of very long black hairs. I can dis- 

 cover no trace of stigmata in the larva in its 

 present condition ; and the respiratory filaments are rather uncer- 

 tain ; but there are distinct traces of bundles composed of three 

 or four short filaments on either side of the ventral surface of the 

 first and second abdominal segments ; on the other segments I 

 cannot define traces of filaments. 



(iii.) On the same slide are disconnected fragments (figs. 2, 3, 

 and 4. Eig. 2. A, B, head above and beneath : fig. 3. A, B, meso" 

 notum and metaiiotum : fig. 4. A, maxillary and labial palpi ; B, 

 portions of tarsus ; C, mandibles) of what Prof. Hutton assumed to 

 be the perfect insect. Here he was a little mistaken. The frag- 



Fig. 3. 



A. Mesonotum. 



B. Metanotum. 

 Of pupa. 



