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



125 



2. EUIULOPIS MIRABILIS, C. BOVALLIUS, 1887. 



PI. VIII, fig. 19—33. 



Diagn. Caput paullo hirsutum, segmentis tribus primis peraei longius. Segmenta percei breviter hir- 

 suta, segmenta sex ultima elevata, depressionibus interrupta. Angulus infero-posterior carpi 

 pedum percei primi paris non productus, spina terminali destitutus. Processus carpalis 

 pedum secundi paris dimidium metacarpi haud superans, spina terminali destitutus. Pedes 

 parium trium ultimorum duobus pra?cedentibus longiores. Pleon quam person haud brevius. 

 Rami pedum uri lanceolati, marginibus serratis. Telson pedunculo pedum uri ultimi paris 

 angustius. 



The head is a little hirsute, longer than the first three pergonal segments together. The 

 segments of the perason are shortly hirsute, the second to seventh segments are elevated, one 

 elevation separated from another by a depression. The lower hinder corner of the carpus of 

 the first pair of perceopoda is not produced, and wants a terminal spine. The carpal process 

 of the second pair is about half as long as the metacarpus; it wants a terminal spine. The 

 last three pairs are longer than the two next preceding pairs. The pleon is about as long 

 as the person. The rami of the uropoda are lanceolate, with serrated margins. The telson 

 is narrower than the peduncle of the last pair of uropoda. 



Colour. Red, with darker spots, especially on the hind part of the body, and on the peraeopoda, the 

 eyes are deep brown with a metallic lustre. 



Length. 6 — 8 mm. 



Hal). The tropical region of the Pacific, in the Bay of Panama; taken in 1882 by the author 

 among the Islas de las Perlas, at San Jose, and in the Bahia de Tycho, Isla 

 del Rey. (F. M.; S. M.) 



Euiulopis mirabilis is a well defined specis, very easily distinguished from the 

 other known species of the genus by the form and armature of the first two pairs of 

 peraeopoda, and by the form and serration of the rami of the uropoda. By this latter 

 characteristic the present species conies nearer to the genus Hyperia than Euiulopis Loveni 

 does, and may be looked upon as connecting Euiulopis Avith Hyperia. The hair-cover- 

 ing is less spread out over the body, the hairs are much shorter, and, in some parts, 

 more spine-like, than in E. Loveni. Unhappily I have not seen any female specimens, but 

 it is likely enough that the same sexual dimorphism may appear in this species as in 

 the above described one. 



The body is not compressed, tolerably wide; the hind part of the body is compa- 

 ratively much longer than in the preceding species, the pleon being fully as long as the 

 peraaon. 



The head is almost as long as the first three pereeonal segments together; it is as broad 

 as long, and about a third more deep than long. The antennal groove commences just 

 at the middle of the front side, and continues on the under side to the buccal region. 



