Clare Island Sui'vey — Marine Entomostraca. 45 13 



wide, and separated by about two and a half times their own width. 

 First antenna (PI. Ill, fig. 6) slender, eight-jointed, proportional length 



of joints ' ^ ' ' ' ' „ ' ' ' , the second joint with a small tooth 

 lo . ZZ . 7 . 10 . o . 4 . 4 . 7 



on its upper distal margin. Second antenna (PI. Ill, fig. 7) slender, outer 



branch three-jointed, the first two joints each with a distal seta, the 



third joint with a lateral and two much smaller terminal setae. 



Maxillipede (PI. Ill, fig. 9) with a slender hand and claw. First foot 



(PI. Ill, fig. 5) slender, outer branch much shorter than the inner, inner 



branch with second and third joints together equal to about one-third of 



the first joint, third joint twice as long as the second. Second to 



fourth feet almost exactly as in A. lagenirostris. 



Fifth feet with long and narrow parallel-sided second joint bearing 

 one inner edge, two terminal and three lateral setae. First joint with 

 three terminal and two lateral setae and a small tooth distally on the 

 outer margin. 



This species is allied to A. lagenirostris, but can easily be recognized 

 by its narrower rostrum and the great development of spines on the 

 abdomen and last thoracic segment. Several specimens were taken in 

 May, 1909, off Killary Harbour in 24 fms. in a tow-net attached to a 

 dredge. 



Family CANTHOCAMPTIDAE. 



*Mesochra pygmaea Cls. — Blacksod Bay, between tidemarks, one. 



*Ameira attenuata Thomps. — Off Killary Harbour, 24 fms., one. Agrees with 



Sars' figures as given under A. tenella. 

 *A. tau (Giesbrecht). — Ballynakill, 1901, 1-3 fms., one. 

 *A. minuta Boeek. — Blacksod Bay, March, 1911, between tidemarks, two. 

 *Ameiropsis longicornis Gr. 0. Sars. — Blacksod Bay, September, 1911, 2 fms., 



one. The specimen differs slightly from Sars' figures ; and I give figures 



of the first and fifth feet (PI. II, figs. 13, 14). 

 *A. nobilis G. 0. Sars.— Off Killary Harbour, 24 fms., May, 1909, one. 

 *Stenocopia spinosa (Scott). — Off Killary Harbour, 24 fms., May, 1909, 



few. 

 *S. longicaudata (Scott). — Ballynakill, 1901, 1-2 fms., one. 

 *Leptomesochra attenuata (Scott). — Off Killary Harbour, 24 fms., May, 1901, 



one. 

 *Paramesochra dubia Scott.— Off Killary Harbour, 24 fms., May, 1909, two 



females, length - 54 mm. 

 *Tetragoniceps malleolata Brady. — Off Killary Harbour, 24 fms., May, 1909, 



few. This is the true T. malleolatus of Brady, and not the species referred 



