KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND. 21. N:0 5. 



65 



12. VIBILIA GRACILIS, C. B0VALLIU8, 1887. 



Pl. IX, fig. 14—28. 



Diagn. Caput rostratum, segmentis duobiis priinis pereii longiu.s. Ociili parvi. Flagellum anteiinarutn 

 primi paris acutuni, caput longitudine a^quans. Pede.f pereii curti. Femora peduQi primi 

 ac secundi parium linearia, angusta. Pi'ocessus carpi pediim secundi paris metacarpum lon- 

 gitudine fere requans. Tihia? peduni tertii ac quarti parium non tumidaj; dactyli longis- 

 .simi. Pedes quinti et sexti jjariuni pedibus tertii ac quarti parium paullo solum lougiores. 

 femora lata, linearia; dactyli longi. Segmentum secundum et tertium uri coalita. Anguli 

 postici segmenti ultimi leviter producti. Pedunculi pechim iiri lineares, ramis longiores. 

 Telsov rotundatuni, dimidio pedunculi ultimi pari.* peduni uri longius. 



The head. is rostrate, longer than the first two pereional segments together. The fii/es are 

 small. The flagellum of the first pair of anfenmr is acute, as long as the head. The 

 pereiopoda are short. The femora of the first and second pairs of pereiopoda are narrow, 

 linear. The carpal process of the second pair is almost as long as the metacarpus. The 

 tibia- of the third aud fourth pairs are not tumid: the dactyli are very large. The fifth 

 and sixth pairs are onlv a little longer than the third and fourth; the femora are broad, 

 linear; the dactyli are long. The second and' third iirol segments are coalesced. The 

 hinder corners of the last segment ai-(* feebly produccd. Tlie peduncles of the nropoda 

 are linear, longer than the rami. The teUon is rounded, longer than half the peduncle of 

 the last pair of uropoda. 



Coloiir. Hyaline, with deep red, starlike spöts. 



Lengtll. 9 mm. 



Hab. Tropical parts of the Pacific. (S. M.) 



Syn. 1887. VihUia i/rariUx. C. BOYALUUS. »Syste.itiatioal list of the .4raphipoda Hyperiidea». Bib. t. K. 



Sv. Vet. .'Vk. Halldi. Bd. 11. N:o 16, p. 9. 



Vibiliii gracilis and the three followiiig species fonn u distinct grotip of Vibilitu, 

 diflei-ing from all the preceding .species by the eoraparativel}' long urns, with vounded sides 

 and inore or less produced hinder corners. 



Tlie bodi/ is .sleiider, compressed. 'J1ip integument is thin, hyaline, densely provided 

 with .starlike spöts of a dark red eolonr. These spöts consist of regnlar crystals of some 

 calcareous tnatter (Pl. IX, fig. K! — 18). 



The head is a third deeper than long, as long as the first two pereional segments 

 and half the third. The rostrum is as long as a fourth of the head, tolerably acute, feebly 

 bent downwards. Just bevond the base of the first pair of antenna.^ the anterior sides 

 pi-oject into a shar]) toothlike process on each side of the head (Pl. IX, fig. 15). 



The eyes are comparati\eh- small; they consist each of scarcely more than twenty ocelli. 



The jirst pair of antennn> (Pl. IX, fig. 15) have the basal joint of the peduncle more 



than twice longer than the two succeedine' ioints together, the third joint is twice as long 



9 



K. Sv. Vet. .\kad. Han.tl. Band. 2h N:u i. " 



