MEMOIRS OF TOE NATIONAL ACADEMY OF SCIENCES. 283 



<lowii on the side, of the first abdoiniual segment to tlie base of tlie tliird pair of thoracic legs. Tlie 

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

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

 snranal ])late are two parallel dorsal dark lines. 



Sttuje IV. — Length, L'ti mm. IMarkings as in Stage III, but much more distinct, and now the 

 two dorsal prothoracic spines are slightly shorter, thicker, and more rounded at the end, without 

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

 the last stage. Thoracic legs reddish. 



Stage V (and last). — Length, 3.") mm. Head (in alcoholic specimen) deep reddish on the sides, 

 rrothoracic spines rounded, reddish, tijiped with blackisli. 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 sjtot, the dorsal line again 

 dividing on the tifth abdominal segment, and in my specimen nearly obsolete behind. A lateral 

 oblique reddish band (m the tirst abdominal segment beginning just behind the spiracle and 

 extending to the base of the third i)air of legs. A lateral reddish baud on third and sixth abdom- 

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

 sides. Thoracic and abdominal legs reddish. 



A NOTE ON THE LARVA OF DATANA FLORIDANA Ciraef. 



"Having examined some specimens of the larva of Dataiia jUiridaim in the collection of the 

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

 Koebele (Bull. Bi-ooklyn 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 wliite, and arise singly from minute tul)ercles. Tlie fine short (secondaiy) hairs 

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

 in jD. major and D. palmii. The species is closely allied to I), jxdmii, and may prove, on further 

 investigation, to be not specifically distinct." (Psyche, vi, p. .j7.3.) 



A NOTE ON DATANA CALIFORNICA Eiley. 



This form, labeled by the late C. V. Eiley as Batana californicii, I find, on examination of the 

 types of the moths and two blown larv;e in the National Museum, to be only a sligbtly marked 

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



The moths, 1 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 large size, 58 mm. in length, blown specimens. They difl'er slightly 

 from several blown specimens of Eastern ministra. The head is black and the prothoracic shield 

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

 normal ministra, but very slightly 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 m/«(sf;a approaches the California larvte in having deep red legs. On 

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

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

 with me. 



NliTE ON THE VESTIGES OF MANDIBLES IN THE PUPA. 



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

 whom 1 submitted proofs, writes me as follows: '' The paraclyi)eal pieces have always passed with 

 nie 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 tlie larva, just as prolegs 

 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, 20, 30, 31, 37, 41, 45 with the swollen bases of 

 the large functional mandibles of Microptcry.r purpuricUa (fig. 5) they seem to agree with them 

 in position. 



