464 MR WALTER E. COLLINGE ON 



( Joloui (iii alcohol) dark shiny olive-green, with the posterior margins of all the 

 segments lighter. 



Habitat. — Madeira, 1892 (J. W. Clark). 



Type. — In the Cambridge University Museum of Zoology. 



Some dozen or more species of this genus have been described from Spain, but I 

 have been unable to identify any of them with the present species. In the elongated 

 telson and the form of the uropoda, cephalon, antennulse, and antenna? it differs from 

 any of them. Its nearest ally is probably A. vulgare (Latreille) ; it is, however, more 

 elongated than that species, and differs from it in the characters above mentioned, as 

 also in the structure of the mouth parts. 



7. Cubaris invenustus, n. sp. (PI. II, figs. 20-28.) 



Body oblong-oval, strongly convex, smooth. Cephalon (figs. 20, 21) flattened, 

 marginate anteriorly, lateral lobes small, median lobe absent ; epistome almost 

 vertical, with slightly raised triangular shield. Eyes situated dorso-laterally. Anten- 

 nulas (fig. 22) short and stout, three-jointed, with number of stout setae on the lateral 

 portion of the 3rd joint, terminal portion rounded and with short, blunt spine. 

 Antennae (fig. 23) short, sparsely covered with fine setae, 2nd to 5th joints grooved 

 on the inner side ; flagellum two- jointed, the distal joint being a little over twice as . 

 long as the proximal one. Segments of the mesosome with the pleural plates 

 excavate anteriorly, not produced backwardly, 6th and 7th segments terminally 

 truncate, lateral portions of 1st and 2nd segments notched and grooved on their 

 lower inner margins for reception of succeeding segments (fig. 24). Maxillipedes 

 (fig. 25), the outer palp terminates in a multispinous process on the outer side, with 

 a long spine below it and two smaller ones within ; the inner palp has two blunt, 

 tooth-like spines and a much smaller one on the internal border. Thoracic appendages 

 typical. Uropoda (figs. 26 and 27) not extending beyond the telson, basal plate 

 thick and robust, with raised dorsal face, posterior margin almost straight ; exopodite 

 very small, situated on the lower inner border of the basal plate, endopodite large, 

 setaceous. Telson (fig. 28), posterior margin straight, and as broad as length of 

 segment, expanded anteriorly with triangular convexity, and slight concavity in the 

 median line. 



Length 16 '5 mm. 



Colour (in alcohol) light green with dark brown transverse stripe on the posterior 

 of each mesosomatic segment. 



Habitat. — La Massane, E. Pyrenees, June 20th, 1 891 (D. Sharp); also S. Spain, 

 May 3rd, 1894 (W. Bateson). 



Type. — In the Cambridge University Museum of Zoology. 



