Paraspiniphora. 105 



which Keilin has given a very detailed description; according to this 

 aiithor, the larva is remarkable by its rich ornamentation with 

 cuticiilar processes. The larva is somewhat spindle-shaped, attenuating 

 towards the head and with the last segment attenuated to a process, 

 carrying below, near the base, the anus and at the end the posterior 

 spiracles; the length is about 7 mm. The thoracai segments are rather 

 smooth, but on abdomen there is on the dorsal side of each of the 

 first seven segments three transverse rows of erect bristles, the first 

 abdominal segment, however, shows only the posterior row; further 

 there is on each segment six long cylindrical papillæ, each carrying 

 at the end a bundle of four long, diverging bristles; of these six papillæ 

 four are placed in the middle row of the three transverse rows of 

 bristles in such a way that two stand near the middle and two at the 

 side margin, one on each side, further the last two are placed likewise 

 one at each side margin a little anterior to the former; these latter 

 papillæ are smaller than the other four, and at the side margin of 

 each segment there are consequently two papillæ, one behind the 

 other, the anterior being the smaller; on the ventral side there is a 

 similar, but smaller papilla at the lateral margin of each segment. 

 On each of the seven abdominal segments there are still four small 

 processes with three bristles at the end, they are placed in the posterior 

 row of the three transverse rows of bristles, two near the middle and 

 two near the side margins; the last segment has six long, hairy lateral 

 papillæ, three at each side, one at the base of the segment and two 

 near the apex. Besides these various papillæ which are visible with a 

 lens, there are still other minute formations, both dorsal and ventral, 

 especially some quite small papillæ bearing four cross-like arranged 

 hairs; of such papillæ there are four on the prothoracic and six on the 

 meso- and metathoracic segment as a transverse middle dorsal row, 

 and on the abdominal segments there are four in a transverse dorsal 

 row at the hind margin of each segment and one at each side on the 

 ventral surface, and fmally one on the base of the large posterior 

 lateral papilla. All these formations are, or bear, sensory organs in 

 connection with nerves, but for a more detailed study I refer to 

 Keilin's work. As before said only the larva of domestica is described, 

 but Schmitz (Biol. Zentralbl. 1. c.) remarks that the larva and pupa 

 of immaculata are similar, but the large dorsal and lateral papillæ 

 are shorter and with shorter bristles. — Of the other bred species 

 only the puparia are known, but as these latter still to some degree 

 show the larval ornamentation, we thus get some information as to 



