KONGL. SV. VET. AKADEMIENS HANDLINGAK. BAND. 21. N:o 5. 41 



The head is very short, flattened anteriorly, five times deeper than long, and shorter 

 than half the first pereional segment. Below the middle the anterior margin on each 

 side projects into a broadl}' roimded lobe, at the uppev coi-ner of ^\'hich the eye is 

 situated. The upper antei"ior corner of the hesid is obtusely roanded without any trace 

 of a rostrum. 



The eyes are elongated vertically, very small, placed at the base of the first pair of 

 antennas; they consist each of about fifteen ocelli. 



The first pair of antennce (Pl. VI, hg. 15) are somewhat like those organs in the 

 female of Hyperia; the first joint of the flagellum is thick, tapering towards the end, fringed 

 Avith thick olfactory hairs or glands; it is twice as long as the peduncle; the following 

 joints are three in number, the last is the longest and narrowest. The antennaj are twice 

 as long as the head and the first pereional segment together. 



The second j^ctir of antennce (Pl. VI, fig. 16) are short and robust; they reach to 

 half the length of the second pereional segment. The second joint is longer than the 

 third, and three times as long as the first; they are fringed with short hairs along the 

 upper margins. The first joint of the flagellum is a little longer than the whole peduncle 

 (9:.8) and shaped as the blade of a daggcr; it is fringed with short hairs along the upper 

 margin and provided with comparativelv large terminal joints, tlie last of wliich is the 

 longest and tipped with two long hairs. 



The 2')ereion; the fii'st segment is shorter than the seventh (3:5), and scarcely equals 

 in length a fifth of the third segment, whicli is tlic longest. The anterior parts of 

 the third and fourth segments are turgid or raised, forraing a kind of round wall along 

 the anterior margins. Such walls, though much smaller, are als(j to be seen at the anterior 

 margins of the second, fifth, and sixth segments. The last three pereional segments are 

 a little longer than the fourth (19:17). All the legs are thick and robust. 



The epimerah are long but not very deep, irregularly rounded bel()\\'. 



The branchial säcks are comparatively small. 



The ovitectrices were not much developed in the specimen examined, iiaked; they are 

 fixed beneath the branchial säcks. 



The first pair of jH-reiopixla (Pl. VI, fig. 17); the carpus is broad, triangulär, a little 

 longer than broad; the lowei- margin is straight. The metacarpus is much shorter than 

 the lower margin of the carpus, a little longer than broad at the base (6:5), provided 

 with sorae few long hairs along the margins. The dactylus is almost straight, longer than 

 half the metacarpus. 



The second jxiir; the carpus is verv thick, longer and broader than tlic metacarpus; 

 the metacarpus is of the same form as in the first pair, but longer; the dactylus is small, 

 shorter than a third of the metacarpus. 



The thirtJ and fourth pairs are equal, the longest of all; the femur is elongate-ovate; 

 the tibia rather shorter than the carpus; the inetacari>us a little longer than the carpus; 

 all joints siaooth without hairs or serrations. 



The fift/i pair (Pl. VI, fig. 18 and 19) are shorter than the fourth (7:8), the tibia 

 is as long as the carpus, the metacarpus a little longer; the dactylus is qnite smooth. 



K. Sv. Vet. Akad. Handl. Band. 21. N;o 5. '-' 



