70 



catus [which see], by Lintner, hi Pr. E. S. Ph., iii (1864), 

 665. Excellent descr. of larva in five stages, by Lintner, in 

 Ent. Contr., ii (1873), 119-121. I'artial transcription of 

 Lintner's later descr., by Strecker, vii (1873), 67. 



jSmerinthus sp. Good descr., by E. B. Reed, of an unde- 

 termined Smerinthus, in Can. Ent., i (1868), 40-41, which, as 

 Saunders says, 1. c, " corresponds very nearly to that of the 

 larva of Smerinthus excaecatus, by Mr. Lintner" [i. e., jS. gem- 

 inatus] . 



This description is too good to lose, especially as it is associated Avith the 

 mention of a remarkable habit, that of emitting a singing noise when dis- 

 tm-bed, and contains some characters not attributed to any other Smerin- 

 thus larva referred to in this article, viz. : the paler green color of the back 

 of the head, the semi-transparency of the anterior segments, the central 

 elongated black patch on the anal plate and the ])cx\qv under surface, with 

 a darker central line. Its special point of agreement with 5^. geminatus 

 consists in the presence of " a reddish spot at the apex " of the head, gem- 

 inatus having the two superior granulations on the head of an orange color; 

 but both geminatus and excaecatus have a subdorsal thoracic line, while 

 none such is attributed to Reed's larva or to Cressonia jm/landis in the 

 descriptions. Comparing the description of Reed's larva with those of 

 S. excaecatus, S. geminatus and C. Juglancl s, and representing these four 

 species respectively by the letters R, E, G and J, we find that all four are 

 green, and thickly granulated, with a lateral stripe on each side of the green 

 and granulated head [head pale reddish brown, in J, according to Clemens], 

 and seven oblique stripes on each side of the green body, the granulations 

 being larger by the side of the stripes. The head of R, G and J is large 

 and triangular, that of G rising above the first segment and being flattened, 

 that of «T with the longest diameter twice that of the first segment and with 

 quite pointed apex, while that of E does not rise above the first segment 

 and is semi-conical; it is of a deep shining green color, with a reddish spot 

 at the apex, and is paler green and granulated behind the stripes, in R; 

 green, having the granulations within the lateral stripes larger than those 

 without, in E; pale or apple-green, granulated in pale green anteriorly and 

 in white laterally and having within the lateral stripes a row of larger 

 rounded granulations increasing in size to the apex, where the two supe- 

 rior ones are papilliform and of an orange color, in G; and light green 

 [pale reddish-brown, Clem.] in J: its lateral stripes are yellow in R, bright 

 yellow and straight in G, pale yellow [Clem.] in J, but are, in E, " whitish 

 or light green " [crimson, Clem.], "bordered by darker green posteriorly, 

 commencing anterior to the ocelli, curving slightly, and uniting at the 

 apex;" the body is apple-green in R, E and J, the anterior segments being 

 semi-transparent in R, the body very pale dorsally in E, pale green, whit- 



