KONGL. SV. VET. AKAUKMIENS HANDLINGAH. BAND. 21. N:u 5. 11 



The first joint of thc fiagelluiu is very elongated, prisniatic, tapcring towards the end, and 

 bordered by three denticulated kcels, tlie teeth very long; the inner side is fringed with 

 long olfactory hai)'s, more densely in the niale thaii in the feniale. The olfactory hairs are 

 placed in transversal ro^vs along two thirds of the length of the joint, 12 to 6 in each 

 row, the number decreasing fi'oni the base towards the end. The nuniber of such trans- 

 versal rows is 60 — 70. The rest of the tlagelluni consists of only one joint scarcely 

 equalling a twelfth of the length of tlie tirst joint; it is conical, withont hairs or serra- 

 tions; the integument seems to be nuich thinner and softer than in the first joint. The 

 flagelluni is more than eight tinies longer than the pedimcle. In the luale the whole an- 

 tenna reaches to the anterior margin of the second pleonal segment, in the female to the 

 anterior margin of the urus; in young aiumals it is shorter. 



The second ■pair of nntcnnce (Pl. II, fig. 2 — 5) in the male are, when stretched out, 

 inuch longer than the lirst pair. The pednnele is three-jointed, the first joint short and 

 stout, scarcely longer than broad, provided with some min ute hairs at the lower anterior 

 corner, the second is twice as long as the first, narrower; the thii-d joint is more than 

 twice as long as the second; both are fringed with minute hairs along the inferior margin. 

 The third joint is broader at the oiiter end, where it articulates with the flagelluni. The joints 

 of the pedimcle are capable of an almost rectangular artieulation against one another; the 

 first joint of the flagelluni can be folded up along the third jteduncular joint and the rest 

 of the flagelluni in the same manner against thc flrst flagellar joint. The whole flagellmn 

 is filiform; tlie first joint, the longest, is a little shorter than the last pcduncular joint, 

 broader at both ends; the following joints, 8 — K) in nuiubcr, are elongated, the last one 

 a little longer than the others, rounded at the tip and ciirrying along its whole length a 

 row of long thiek glandular liaii-s or slciider säcks; the jireceding joints are fringed 

 with short hairs and some few short ovate säcks, filled with some glandular matter. In 

 young males the flagellar joints are very short (Pl. II, fig. 4 and 5). In the feniale the 

 peduncle consists of t\vo short joints tipped with two or three minute articuli, totally smooth. 



The labrum (Pl. I, fig. 6) is broad, the lower margin, being incised in the niiddle, 

 forms two broadly rounded lobes. 



The mandihles (Pl. I, fig. 7 and 8) are long, the tVee end very sharp, .slightly 

 crenulated, the inner corner projects into a sharp point. 



Thc first pair of maxilUe (Pl. I, fig. 9) are well developed; they con sist of a strong 

 basal portion and two lobes; the inner lobe is strongly serrated at the apex, finely hirsute 

 at the stem; the outer lobe is smootli with a small denticle at the lower inner corner; 

 at the base of the inner lobe there is a short and thick, hirsute, appendicular lobe. 



The second pair of »laxillce (Pl. I, fig. 10) consist of a rounded basal portion and two 

 short, densely hirsute lobes, excavated at the ends, and pointed at the corners. 



The maxillipe.ds (Pl. I, fig. 11) consist of a large basal portion and a median robust 

 process, tlie homologon of the terminal joints of the lobes of the two maxillipeds in the 

 Gamniarids. At the anterior corners rise two double lamina^, the homologa of the palps 

 of the maxillipeds. The inner margins of the laminfe carry some short hairs. 



The pereion is a little longer and broader in the female than in the male. The 

 first four segments are somewhat higher than the three follo^ving, and considerably 



