KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 22. N:0 7. 99 



is stated by Stebbing to be in his species, I have not here quoted Hyperoche cvypto- 

 dactylus as a synonym for H. Luetkeni. I strongly suspect, however, that the two spe- 

 cies may soon be found identical. 



The male. 



The body is more slender than in the female. The integument is thick and hard, 

 much thicker in the elder males than in the younger ones, and more darkly coloured. 

 The surface of the segments is smooth and even as if polished. 



The head is as long as the first two pergonal segments together, more broad than 

 long; the antennal groove on the front side of the head reaches from the middle of the 

 head to its lower front margin. The head is not twice as deep as long. 



The eyes occupy the whole surface of the head. 



The first pair of antennas (PI. VII, fig. 2 and 3) in the fullgrown male are shorter 

 than the second pair; in young males the relation between the two pairs varies a little, 

 in very young ones the first pair are decidedly the longest. The first joint of the ped- 

 uncle is thick and stout, longer than the two following joints together; the second joint 

 is shorter than the third. The first joint of the flagellum is almost half as long as the 

 length of the head, and much longer than the whole peduncle; it tapers towards the apex, 

 with bulging sides, the inner side is richly provided with long slender hairs. In the young- 

 males the first joint of the flagellum is comparatively much longer than in the fullgrown 

 male. The second and third joints are tolerably short, but the following, twenty-five to 

 thirty-five in number, are elongated, slender, more than six times as long as broad; they 

 are provided with some club-shaped, olfactory bristles. In the young males the second 

 and following joints of the flagellum are short, scarcely as long as broad, and without 

 bristles. 



The second pair of antennae (PI. VII, fig. 4). The peduncle is more slender than 

 in the first pair; the first joint, or rather the first two joints, if the peduncle is considered 

 to be composed of five joints, are coalesced with the integument of the head; the third 

 joint is longer than the fourth, the fifth or last one is longer than the third, almost as 

 long as the third and fourth together. The first joint of the flagellum is about as long 

 as the last joint of the peduncle, but much narrower; it is more broad at the base than 

 at the apex, nearly five times as long as broad at the base. The following joints are 

 more elongate than the first one, cylindrical, six to eight times as long as broad. The 

 joints of the flagellum are twenty-two to twenty-eight in number, in the fullgrown male. 

 In the young males the joints are, as in the first pair, almost as broad as long, and few 

 in number. 



The labrum is broad, bilobed. 



The mandibles (PI. VII, fig. 5) have the stem long and stout, the incisive lamina 

 is armed with a dozen small, sharp teeth, and some bristles, the molar tubercle is very 

 large, situated almost at the apex of the mandible at the inner side of the incisive lamina; 

 at the outer corner of the molar tubercle there is a prominence, richly covered with long 

 hairs and stout bristles. The secondary incisive projection of the left mandible is very 



