VOL. IV.] Notes on Lepidopterous Larvce, 355 



ently without this posterior row, but has instead a terminal 

 circlet of spines of different sizes, a lateral one on each side much 

 the largest and rather claw-shaped, with the point directed 

 inferiorly. The other spines are much smaller. 

 Described from one specimen. 



II. LYC^NID ON MESQUIT. 



Four specimens of a beautiful light green Ij^csenid larva were 

 beaten, May 16, 1891, from Prosopis juliflora south of Mesilla, 

 New Mexico. At the time of capture, they measured from 5 to 7 

 mm. long, and were of the exact shade of green of the mesquit 

 leaves. They feed on the underside, thus escaping observation- 

 The head, in these and other lycaenid larvse, appears to the 

 naked eye as a small black tubercle on the ventral aspect of 

 the cephalic end of the body, which with their other characters 

 gives them much the appearance of certain dipterous larvae. 



Description op Larva. — Length (strongly curved), 4 to 7 mm.; 

 greatest width, 2 to 3 mm.; greatest thickness, 2 mm. Quite 

 similar in general outline and appearance to the lycaenid on 

 A triplex described by the writer, from Arizona (Am. Nat. 1893). 

 Differs only as follows: Light green in color, with a thick 

 clothing of minute and more spinous tubercles, from each one 

 of which springs a minute hair. With or without the median 

 and lateral rows of reddish spots on segments 3 to 10 (two with 

 and two without). One of the specimens, with the red 

 spots, has also a more or less yellowish area on each side of 

 the median row of spots. The dorsa of segments strongly or 

 hardly at all produced into the raised transverse ridges (one 

 strongly, two moderately, and one very faintly). Anterior 

 segments gradually increasing in width, to segment 6, seg- 

 ments 6 to 10 about equal in width, posterior ones narrow- 

 ing to anus. Some or none of the minute black spinous 

 tubercles interspersed among the whitish ones (more in two 

 cases — same two specimens referred to above as having the 

 rows of red spots; and a considerable number along dorsal 

 region in the other two). All four differ in having none 

 of the short and stout black spines on anterior portion of dorsum 



