626 FIFTH REPORT OF THE ENTOMOLOGICAL COMMISSION. 



ning through it. The tubercles of twelfth and thirteenth segments are now yellow, 

 and at the base of those of 5, 9, 10, and 11 are some bluish dots. Upon being 

 touched, the young larva exhibited the usual retractile horns. These were situated 

 at the base of the head, between it and the second segment. They were pale orange, 

 much darker at the tips. I regret that I could not carry these larvae farther than 

 this stage. I was called away from home, and on my return found them dead. Three 

 larvaj were obtained from eggs observed to be deposited by the female upon Ahtus 

 viridis. The following is the record of changes : Eggs deposted July 6, larva hatched 

 July 13, larva first molt July 15, larva second molt July 18, larva third molt July 22, 

 larva showed retractile horns July 24. (Papilio, ii, p. 114.) 



5. Halesidota maculata (Harris). 



The young larva of Halesidota with yellow and black tufts occurred 

 upon the alder September 1, 8 to 9™™ long. They must have just 

 molted, as in a previous younger stage the larva has much longer, more 

 irregular, scraggly hairs along the back. 



Young larva. — It differs much from the full-grown larva in the body being cylin- 

 drical, the hairs long, uneven, and very sparse compared with the full-grown larva. 

 Head narrow, deeply lobed above, black. Segments 4 to 9 yellow above, elsewhere 

 white, and on the sides marked with black lines. Ou third thoracic and second and 

 seventh abdominal segments the double spike-like black tufts are, though high, not 

 so long as some of the dorsal hairs. 



6. Halesidota caryce (Harris). 



This also occurred on the alder, with the preceding species. 



7. Limacodes ? sp. 



The slug caterpillar described below occurred both on the hazel and 

 alder September 20, at Providence, E. I, 



Larva. — In outline regularly oval cylindrical, with two subdorsal sharp ridges, 

 dividing the upper surface into a dorsal, and two somewhat wider concave lateral 

 areas. Pale pea-green, the two subdorsal ridges yellow, and with a broken yellow 

 line on each lateral acute ridge. In the median or dorsal area is a median row of 

 round straw-yellow spots, with a small central depression and a lateral row of small 

 rounded alternating dots. Two rows of similar yellow spots on the lateral area. 

 Length, 8™'" ; breadth, 5™™. 



8. Jpatela hastuUfera (Abbot-Smith.) 



This common hairy and tufted caterpillar occurs late in summer and 

 through the early autumn from Maine to Georgia, and is the larva so 

 often found ichneumonized, attached firmly to branches, and perforated 

 on the back and sides with holes out of which the flies have escaped. 



We have found the larva on Betula populifolia in Maine August 28 

 to September 4. 



Young larva 12'"™ in length. — Differs from full-grown larva in the hairs on the upper 

 side of the body being much paler, contrasting lees with the yellow on the sides and 

 ends of the body ; the hairs are also less closely cropped ; head more deeply cleft, the 

 lateral prominences more marked and head less rounded than in full-fed larva ob- 

 served August 28. 



