MEMOIRS OF THE NATIONAL ACADEMY OF SCIENCES. 283 



down on the side of the first abdominal segment to the l)ase of the third pair of thoracic legs. The 

 dorsal line divides again on the fifth abdominal segment, inclosing a long triangle extending back 

 to the ninth segment. An oblique reddisli line on the seventh abdominal segment. On the 

 suranal plate are two parallel dorsal dark lines. 



HUuje IT. — Length, 20 mm. Markings as in Stage III, but nmch more distinct, and now the 

 two dorsal prothoracic spines are slightly sliorter, thicker, and more rounded at the end, witliout 

 the two lateral teeth, being of the same shape as in the full-fed larva. Head reddish, nearly as in 

 the last stage. Thoracic legs reddish. 



Stage V (and last). — Length, 35 mm. Head (in alcoholic specimen) deep reddish on the sides. 

 Protlioracic spines rounded, reddish, tipped with blackish. Body leaf-green, the lines faintly 

 marked; the two dorsal reddish lines dividing on the third thoracic segment, uniting again on 

 the fourth abdominal segment, and inclosing a lanceolate oval dorsal spot, the dorsal line again 

 dividing on tlie fifth abdominal segment, and in my specimen nearly obsolete behind. A lateral 

 oblique reddish band on the first abdominal segment beginning just behind the spiracle and 

 extending to the base of the third pair of legs. A lateral reddish band on third and sixth abdom- 

 inal segments, suranal plate broadly edged witli reddish. Anal legs reddish above and on the 

 sides. Thoracic and abdominal legs reddish. 



A NOTE ON THE LARVA OF DATANA FLORIDANA Graef. 



"Having examined some specimens of the larva of Daiana floridana in the collection of the 

 Museum of Comparative Zoology at Cambridge, I am able to confirm the description by Mr. 

 Koebele (Bull. Brooklyn Ent. Soc, iv, 21), and to add that the lateral lines are slightly broader 

 than the intervening black spaces, or as broad; not confluent at the extremities. The large, 

 normal hairs are white, and arise singly from minute tubercles. The fine short (secondary) hairs 

 are black, very inconspicuous without a lens, and not diflering from the corresponding structures 

 in B. major and D. pahnii. The species is closely allied to J>. palmii, and may prove, on further 

 investigation, to be not specifically distinct." (Psyche, vi, p. 573.) 



A NOTE ON DATANA CALIFORNICA Eiley. 



This form, labeled by the late C. V. Riley as Datana caUfornica, I find, on examination of the 

 types of tlie moths and two blown larvae in the National Museum, to be only a slightly marked 

 variety of Datana miimtra. The specimens are all from Santa Clara County, Cal. 



The moths, S and 9 , six in all, only differ from Eastern D. ministra in being a little paler; the 

 lines and other markings are the same, as well as the scallops of the wings. They are of large 

 size, a female expanding 52 mm.; length of a fore wing, 25 mm.; that of an Eastern 9 , 22 mm. 



The two larva' were of huge size, 58 mm. in length, blown specimens. They differ sliglitly 

 fi'om several blown specimens of Eastern ministra. The head is black and the i^rothoracic shield 

 gamboge-yellow, as in normal D. ministra, and the stripes along the body are yellow, and as in 

 normal ministra, but very sliglitly narrower. Beneath, the body is decidedly darker, and the base 

 of the legs is darker, deep reddish where those of the Eastern ministra are usually gamboge-yellow. 

 Also the latero- ventral yellow line is much narrower and more nearly obsolete. However, a blown 

 specimen of an Eastern ministra approaches the California larv;e in having deep red legs. On 

 the whole, while there are slight differences in the California form, I am yet somewhat in doubt 

 whether to call it a well-marked climatic variety. Dr. Dyar, on seeing the siiecimen, coincides 

 with me. 



NOTE ON THE VESTIGES OF MANDIBLES IN THE PUPA. 



Regarding the nature of the pieces which I have designated as paraclypeal. Dr. Chapuan, to 

 whom I submitted proofs, writes me as follows: ''The paraclypeal pieces have always passed with 

 me as mandibles, but there is room for doubt. Where there is a distinct articulation all around I 

 think it is so, but in other cases it may be the corner of the head case of the larva, just as prologs 

 and other larval marks often present." I am inclined to adopt this view. On comparing the 

 paraclypeal pieces in figs. 12, 23, 24, 26, 27, 28, 29, 30, 31, 37, 41, 45 with the swollen bases of 

 the large functional mandibles of Micropteryx purpuriella (fig. 5) they seem to agree with them 

 in position. 



