20 — 



minute setae at apex present, inconspicuous (seen 

 with low power microscope). 



Mandibles somewhat" longer than wide at. base, 

 the left 4-dentate, the teeth distinct, the right 3-den- 

 tate, the third tooth small; ridges much less con- 

 spicuous than with albohirtum, obtuse. Retinaculum 

 of left mandible from dorsad showing three teeth, 

 two small, the third (distal) large; of the right man- 

 dible the same but the large tooth is proximad or the 

 first which is not as elevated as the third tooth of 

 the retinaculum of the left mandible. Penicellus a 

 small tuft of hairs from the proximal face of the 

 retinaculum (right mandible), semirerect; in the left 

 mandible, a quarter circle of hairs around the pro- 

 ximal edge of the retinaculum from dorsad. A small 

 cluster of hairs on each mandible dorsad near the 

 center of the retinaculum just at its base (also in 

 the ventral aspect). Clothing about as in albohirtum. 



Maxillae about as in albohirtum; the two lobes 

 are in one piece as in that species but here the suture 

 between them is not distinct and the apex of each 

 is connate, not free for a short distance as in 

 albohirtum. Also, here, the dorsal edge of the stipes 

 is not armed with a longitudinal row of distinct, 

 comblike teeth. Third joint of palpus distinctly 

 longer than either of the other two which are wider 

 than long, 3 conical, distinctly longer than wide ; 

 joint 2 with a bristle laterad and one ventro-laterad, 

 both at tip. 



Distal joint of labial palpus distinctly longer 

 than the proximal which is wider than long. Palpus 

 naked but its stipes with setae on its lateral aspect. 



Thorax widening a little distad, there as wide 

 as long and about twice the width of the head. Latero- 

 cervical shield with" short setae in round white circles 

 along ventral half of cephalic margin, continued 

 around ventral apex and half way up to the opposite 

 margin toward the spiracle ; also in middle of that 

 portion of the caudal margin between spiracle and 

 apex a row of three of these setae, well separated. 

 Ventral half of the shield like a blunt, short, stout 

 finger. Spiracle situate ventrad of middle of the 

 shield, the latter inflexed so as to avoid the spiracle, 

 the latter separated from the shield. Thoracic inci- 

 sions practically as in albohirtum. Cervix naked. 



Legs only slightly increasing in size caudad. 

 Cephalic femur three — fourths the length of the caudal 

 one. Tarsi longer than their respective femora but 

 only a little so. Tibiae barely longer than wide. 

 As in albohirtum. Abdomen gradually widening 

 caudad, nearly thrice the length of the thorax, widest 

 at segment 8. Body with a longitudinal fold from 

 head nearly to apex, this fold just ventrad of the 

 spiracle. Muscles controlling the stigmata distinct. 



Clothing of dorsal body consisting of generally 

 a row of short setae across each fold but two on the 

 abdomen except caudad, each row widening laterad 

 toward the spiracle; ventrad there are several rows 

 on each segment, the setae in each longer than those 

 of the dorsal rows. Dorsad at apex, the anal seg- 

 ment with numerous stiff setae of varying length 

 but generally longer than those ventrad just before 

 apex. The latter are short, straight and stiff, di- 



stinctly denser than the dorsal setae and enclosing 

 a long-övate (somewhat over twee longer than wide) 

 naked area whose apex is a little before tip; between 

 the tip of this area and the vent there is a cross-row 

 of long setae, followed by several rows of short setae. 

 There are two setae at base of antennae laterad, one 

 ventrad of the other. Cephalic margin of epicranium 

 between the mandibles unarmed. There are two 

 conspicuous, isolated bristles dorsad on each man- 

 dible between tip and middle and a little laterad. 

 Stadium II. g| 



The same. Length when extended, 18 mm; 

 greatest width, 4.75 mm; greatest width of the head, 

 2.2 mm. Distal third or less of mandible black. 

 Thoracic peritreme farther open than the abdominal 

 peritremes. Joint 1 of antennae a little shorter than 4 

 which is longest; joint 2 barely longer than wide. 

 White, pustula-like setigerous spots on latero-cervical. 

 shield not distinct. The shield is shorter and stouter 

 at ventral end. Tarsi still longer than their femora. 

 Ridges of mandible subobsolete. The dorsal of the 

 two lateral bristles of joint 2 of the maxillary palpus, 

 latero -dorsad. 



Stadium I. 



The same. Length when extended, 8 mm; 

 greatest width, 2.3 mm; greatest width of the head, 

 1.25 mm. 



Form more slender, less thickened caudad; the 

 colored parts are paler, yellowish. Only the apex 

 of the mandible is darker, being reddish brown. 

 Antennae and palpi pale, also the legs and the latero- 

 cervical shield. Peritremes pale yellow, inconspicuous. 

 Joint 4 of antennae much the longest, 3 subquadrate, 

 subequal to 2, 1 somewhat longer than 2 or 3. Third 

 tooth of retinaculum of left mandible very large, 

 towering over the other small ones and in*ventral 

 aspect distad curved proximad. Third tooth of 

 right mandible acute like the others, distinct but 

 smaller. Teeth of left mandible acute, long distad. 

 Third tooth of retinaculum of left mandible with 

 the dorsal edge acute, straight, like a cutting edge. 

 From dorsal aspect, retinaculum apparently with 

 four teeth because the first is more or less divided 

 longitudinally. Of the two bristles on joint 2 of 

 maxillary palpus 1 is lateral, the other ventral. Body 

 setae long, fine. The apical spine-like termination 

 of tarsi obsolete. to be continued. 



6:11.57 



Färbungsafoerrationen. 



Von Fianz Bandermann. 



Man hat im Allgemeinen festgestellt, daß bei 

 einer Anzahl von Tiergattungen der Albinismus 

 hinsichtlich der kälteren Zonen stark hervortritt, 

 wie diese Färb Veränderungen entstehen, ist in be- 

 kannten wissenschaftlichen Zeitschriften oft genug 

 dargelegt worden; ich will auch nur einige auffallende 

 Erscheinungen besprechen. Wie entsteht z. B. die 

 7 farbige Hauskatze, deren Eltern völlig grau waren; 

 wie entstehen einfarbig weiße, schwarze oder graue 

 Katzen, deren Eltern 6 farbig gezeichnet sind ? 



