December 1S03.] 



PSYCHE. 



573 



that it could not be separated from M. albus 

 which I lately described from specimens on 

 a malvaceous plant in Jamaica! There are 

 differences, indeed, in the color of the exuviae 

 and other small points, whereon a new 

 variety is founded — but after comparing 

 concolor with the types of albus, I can see 

 nothing to separate them specifically. 

 Thus we have : — 



(a.) albus. Jamaica, on a malvaceous plant, 

 alt. 50 feet above the sea, climate very humid, 

 tropical. 



(b.) albus v. concolor. New Mexico, on a 

 chenopodiaceous plant, alt. 3,800 ft., climate 

 very dry, not tropical. (One can scarcely 

 say temperate, the summer heat being 

 greater than in Jamaica). Truly a singular 

 distribution ! 



A NOTE ON THE LARVA OF DATANA FLORIDANA GRAEF. 



BY HARRISON G. DYAR. 



Having examined some specimens of the 

 larva of Datana floridana in the collection 

 of the Museum of Comparative Zoology at 

 Cambridge, I am able to confirm the des- 

 cription 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 ex- 

 tremities. 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 differ- 

 ing from the corresponding structures in D. 

 major and D. palmii. The species is closely 

 allied to D. palmii, and may prove, on further 

 investigation, to be not specifically distinct. 

 The following table may replace the one given 

 by me (Ent. amer. vi, 132). I include the 

 names of the three species whose larvae are 

 unknown, in the order in which they will 

 probably be found to belong. 



Mature Larvae (Stage V). 



Secondary hairs much shorter than primary ones. 

 Hairs concolorous, pale. 



Cervical shield black. ......... 



Cervical shield yellow. 



Lateral lines separate at extremities. ..... 



Lateral lines confluent at extremities. ..... 



Hairs not concolorous. 



Secondary hairs black; head red. 



Lateral stripes broken into spots. 



Lateral stripes continuous. 



Stripes narrower than the subdorsal black space; head pale 

 Stripes broader than this space; head dark red. 



Secondary hairs brown ; head black or red. .... 



Secondary hairs nearly as long as primary, concolorou-. 



Cervical shield black. ...■••••• 

 Cervical shield yellow. .,...•••• 



minis Ira. 

 \californica\. 



drc xclii. 



ma 1 or . 



red. 



palmii. 



floridana. 

 [modesta]. 

 perspicua. 



[robusta~\. 



integer rima. 

 contracta. 



