I. '08. 158 



the Gulf of Marseilles. There is no doubt that A . Brendani 

 is a synonym of the species found by Gourret, though this is 

 by no means evident from his description and figures. 



Aegean Lacazei may be readily distinguished from all 

 other known species of the genus (with the possible exception 

 of A. Habereri, Doflein) by the comparatively narrow an- 

 tennal scale with concave outer edge. Doflein (1902) describes 

 the antennal scale of his A. Habereri from East x\siatic waters 

 as oval, but in a rather rough figure the outer edge appears to 

 be concave. Miss Eathbun (1906) when recording specimens 

 of this form from Hawaiian waters, does not allude to the 

 shape of the antennal scale, but mentions that the median 

 carina of the carapace is five-toothed in the female and that 

 the outer antennular flagellum of the female is not more than 

 half as thick as the inner. These characteristics are certainly 

 not present in A. Lacazei. 



In addition to the shape of the antennal scale, A. Lacazei 

 may be distinguished from A. cataphractus , the common Medi- 

 terranean form, by its more slender build and fine sculpturing, 

 by the number of teeth on the second lateral carina of the 

 carapace and by the greater length of the sixth abdominal 

 somite (in A. cataphr actus the fifth and sixth somites are of 

 much the same length). 



General distribution. — Until guite recently this species was 

 known only from the Gulf of Marseilles, where the type speci- 

 mens w^ere found. In addition to the Irish examples I have 

 examined a number of individuals caught by the Huxley on the 

 N. side of the Bay of Biscay. 



Irish distribution. — All the specimens were found in deep 

 water off the south-west of Ireland. The records are : — 



Helga. 



S.R. 165— 3/11 /'04.— 52° 6' N., WWW., 244 fathoms. Trawl 



Temperature at 230 fathoms 10-4° C, salinity 35-617^0 



— Two, 14 mm. 

 S.R. 171— 5/11 /'04.— 52° 7' N., 11° 58' W., 337 fathoms. Trawl. 



—Six', 23-32 mm. 

 S.R. 188— 3/2 /'05.— 51° 53' N., 11° 59' W., 320-372 fathoms. Trawl. 



Temperature at 300 fathoms 10-12° C, sahnity 35 -50°/^^ 



— One, 24 mm. 

 S.R. 321— 1/5 /'06.— 50° 58' N., 11° 17' W., 208-480 fathoms. 



Trawl. — One, 16 mm. 

 S.R. 330-9 /5/'06.— 51° 16' N., 11° 37' W., 374-415 fathoms. Traw 



Temperature at 400 fathoms 9-55°C., salinity 35-33°/o' 



— One, 17 mm. 

 S.R. 362— 9/8 /'06.— 51° 34' 30" N., 11° 27' W., 145-160 fathoms. 



Trawl. Temperature at 150 fathoms 10 05° C, salinity 



35-37°/^^— One, 24 mm. 



1 The type specimen is a female measuring 32 mm. 



