128 INSECUTOR INSCITI^ MENSTRUUS 



idaho'ensis Theobald, prodotes Dyar, plutocraticus Dyar & 

 Knab, balteatus Dyar & Knab, decticus Howard, Dyar & Knab, 

 cataphylla Dyar, nubilus Theobald, fisheri Dyar, ventrovittis 

 Dyar, centrotus Howard, Dyar & Knab, provocans Walker, 

 lugustivittatus Dyar & Knab, obturbator Dyar & Knab, con- 

 dolescens Dyar & Knab, and leucomelas Lutz. 



Of these, only diantaeus, decticus, prodotes, and centrotus 

 can be compared with acrophilus. A. prodotes inhabits the 

 same general region, the Rocky Mountains, but has a gray 

 mesonotum, like pullatus, whereas acrophilus is golden yellow. 

 The coloration of the adult of diantaeus is unknown, the 

 species being founded on the male genitalia ; but it comes 

 from the mountains of New Hampshire and is probably a 

 different species. A. centrotus and A. decticus are from the 

 region north of Lake Superior. The former has the mesono- 

 tum all brown dorsally as in auroides Felt and provocans 

 Walker, and, therefore, does not agree. A. decticus comes 

 closest, having the same black-spotted head; but besides the 

 different faunal region, decticus has the abdominal bands 

 obsolete dorsally, the tibiae are entirely black without gray 

 scales, and the mesonotal brown stripes are much broader than 

 in acrophilus. It therefore appears that this represents a dis- 

 tinct species. 



DESCRIPTIONS OF SOME LEPIDOPTEROUS 

 LARV^ FROM MEXICO 



By HARRISON G. DYAR 



NYMPHALIDJE 



Peridromia amphinome Linn. 



Head shining black, angled, roughened with points below, 

 on the sides forming several short horns; each lobe produced 

 into a long spine, three times the height of the head, with three 

 or four short branches, ending in a slight knob tipped by yel- 

 lowish, the whole spine minutely spinulose. Body cylindrical, 

 the prothorax rather small, mesothorax slightly inflated. Black, 



