95 



Det indbyrdes Forhold mellem de ii frie Forkrops- 

 segmenter er omtrent som hos foregaaende Art. Dog er 

 næstsidste Segment forholdsvis kortere og bredere. Det viser 

 oventil den sædvanlige mediane Længdefure, der dog her 

 er ganske smal og desuden en tydeligt markeret Tværfure, 

 der krydser hin og til hver Side kløfter sig i 2 Grene, der 

 begrændser det noget convexe laterale Parti, til hvis Under- 

 side de tilsvarende Lemmer er fæstede. Sirlsti- Segment er 

 kjendeligt smalere end det foregaaende og har de bagre 

 Sidehjorner kun lidet uddragne og stumpe. 



Bagkroppen er ai' den sædvanlige smale lineære Form 

 og har Epimererne kun lidet udstaaende til Siderne og, 

 naar undtages sidste Segment, delt i 2 eller Uere Tænder. 



Øinene er tydeligt udviklede, men meget smaa og saa- 

 ledes beliggende, at de, naar Dyret sees ovenfra, for en 

 stor Del dækkes at' de fra Siderne at' Hovedet udgaaende 

 Sniaapigge. 



Følerne viser intetsomhelst udmærkende i sin Bygning. 



Kindbakkerne er forholdsvis noget kraftigere end bos 

 foregaaende Art og har Spidsen noget sterkere indadkrum- 

 met og den ydre Kant glat. aden noget tydeligt tandfor- 

 migt Fremspring. 



Munddelene og Kodderne skiller sig ikke synderligt fra 

 samme hos de øvrige Arter. De sidste Organer udmærker 

 sig dog. sammenlignet med samme hos foregaaende Art. 

 ved kraftigere Bygning og ved sterkere udviklede tandfor- 

 mige Fremspring i den indre Kant. 



Bagkroppens Buglemmer mangler som hos de 2 fore- 

 gaaende Arter ganske Børster paa de smalt tungeformige 

 Endeplader. 



Den midterste Haleplade (Fig. 26) er af en meget 

 characteristisk Form. Den er nemlig umiddelbart bag Basis 

 særdeles sterkt indknebet, saa at det ydre Parti bliver 

 meget smalt og koniskt tilspidset. Til Spidsen er som bos 

 foregaaende Art fæstet 2 divergerende Børster, og noget 

 hengere fortil udgaar fra den ovre Flade 2 lignende. 



De ydre Halevedhæng skiller sig ikke i nogen væsent- 

 lig Grad fra samme hos de foregaaende Arter. 



Farven er temmelig ensformig hvidgraa; kun hist og 

 her bemærkes nogle spredte, ligesom udviskede Pigment- 

 pletter af lys gulagtig Farve. 



Længden er 7""", altsaa adskilligt større end hos fore- 

 gaaende Art. 



Larveme (Praniza) (Fig. 27) ligner meget Larverne 

 af de øvrige bekjendte Arter, men skiller sig ved en noget 

 undersætsigere Kropsform. Øinene er særdeles store, ind- 

 tagende Størsteparten af Hovedets Sider og er forsynede med 

 et mørkt purpurfarvet Pigment. Legemet er tydeligere 

 pigmenteret end hos Hannen, med smaa og tætstaaende 

 røde og gule Punkter, især paa Bagkroppen og den forreste 

 Del af Forkroppen. 



The 5 free segments belonging to the anterior division 

 exhibit, when compared together, about tlie same relation 

 as in the preceding species. The penultimate segment is 

 however relatively shorter and broader. Above, it has the 

 usual median longitudinal sulcus. which here. however, occurs 

 exceedingly narrow, and, in addition, a distinctly marked 

 transverse sulcus, traversing the former, and on either side 

 dividing into 2 branches, that limit the somewhat convex 

 lateral region, to the under surface of which are attached 

 the corresponding legs. The last segment is perceptdbly 

 aarrower than the preceding. and has the posterior lateral 

 corners hut very slightly producéd, and obtuse. 



The posterior division of the body has the usual slender, 

 linear form. with the epimera hut slightly projecting toward 

 the sides, as also, saving the terminal segment, divided into 

 2 or more teeth. 



The eves are distinctly developed, but verv small, and 

 so located that, on viewing the animal from above. they 

 appear in great part covered by the minute spikes springing 

 from the sides of the hend. 



The antennæ exhibit nothing distinctive in their struc- 

 ture. 



The mandibles have comparatively a somewhat more 

 powerful development than in the preceding species. with 

 the point a little more incurved and the outer edge smootb, 

 without any perceptible dentiform projection. 



The oral appendages and the legs do not differ mucli 

 from those parts in the other species. The Latter organs, 

 however. are characterized, as compared with those in the 

 preceding species, by a more powerful structure and more 

 fully developed dentiform projections on the inner margin. 



The pleopoda are, as in the 2 preceding species. wholly 

 without bristles on the narrow. linguiform terminal plates. 



The median caudal plate (fig. 2(:>) has a verv charac- 

 teristic form. Immediatelv posterior to the base. it is ex- 

 ceedingly constricted, the outer portion becoming thus very 

 narrow and conicallv pointed. To the point are attached, 

 as in the preceding species. 2 diverging bristles. and some- 

 what farther anteriorly 2 of a similar kiml spring from the 

 upper surface. 



The outer caudal appendages are not essentiallv dis- 

 tinguisbed from those in the 2 preceding species. 



Colour a comparatively uniform whity-grey; here and 

 there only are oliserved :i fe w sea.ttered and. as it were, partially 

 effaced patches of pigment, baving a light-yellowish colour. 



Lengtli 7""" — therefore considerably greater than met 

 with in the preceding species. 



The larva' (Praniza) — (fig. 27) present a close re- 

 semblance to those of the other known species, but are 

 characterized bj a somewhat more thickset form of body. 

 The eves are exceedingly large, occupying the greater part 

 of the sides of the head. and provided with a dark purple- 

 coloured pigment. The body is more conspicuouslv coloured 

 than in the male. with small and closelv disposed red and 

 yellow dots, particularly on the abdomen and the foremost 

 part of the anterior division of the body. 



