THE CANADIAN ENTOMOLOGIST 405 



line on dorsal portion of head connecting with fine median line 

 extending to posterior portion of prothorax where it connects with 

 a subquadrate spot, lateral posterior margins of prothorax, central 

 portion of metathorax between tubercles, posterior half of meso- 

 thoracic lobes, lateral margins of 6th, 7th and 8th abdominal seg- 

 ments, dorsal median spots on 6th, 7th, 8th and 9th abdominal 



segments, 1st, 2nd and most of 3rd abdominal segments. Ventral 

 surface dark brown except light median band extending from 

 front of head to 8th abdominal segment and the 1st, 2nd and 

 outer portion of the 3rd abdominal segments which are also light. 

 Lobes of mesothorax extending to 5th abdominal segments, sides 

 of lobes somewhat angulated. Head with a pair of elongate spines 

 on front, a tubercle on vertex" bearing a pair of elongate spines and 

 a short one anterior and posterior to this pair, a pair of elongate 

 tubercles on dorsum of head, each bearing six elongate spines of 

 varying lengths. Prothorax with sides broadly lobed, four spines 

 in centre arising from a tuberculate base and a pair of smaller 

 spines arising from a posterior light area, anterior margins of 

 prothoracic lobes bearing three short spines, posterior to these 

 arises a long one, posterior to this long one, there is another of 

 similar length, on lateral posterior angle of lobe is a tubercle bear- 

 ing five spines of varying length and a short hair interiorly. Meso- 

 thorax with a pair of dorsal tubercles on either side of light area 

 each bearing three spines, lateral margin bearing two spines on 

 outer angle of lobe and two minute ones posterior to these; posterior 

 to the two minute ones there is a tubercle bearing three or four 

 spines. Second abdominal segment bears a pair of median dorsal 

 spines. Fifth, 6th, 8th and 9th abdominal segments each bear a 

 pair of median, dorsal tubercles from each of which arises a single 

 spine with two hairs anterior to it. Lateral margins of abdominal 

 segments four to eight bear a single tuberculate spine from base 

 of which arises two smaller spines and a hair. Eyes prominent, 

 consisting of a number of ommatidia. Antennae four-jointed, 

 sides parallel, apical joint slightly clavate, second joint two-thirds 

 the length of the first, third joint three times the combined lengths 

 of the first and second, fourth joint slightly longer than the first 

 and second combined. Two apical joints bearing several long 



