56 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 



3. Ventrolateral margin of head oblique 4 



4. Article 2 of antenna 1 about half as long as article 4 



of antenna 2 abyssi 



4. Article 2 of antenna 1 about as long as article 4 



of antenna 2 guernei 



5. Antenna 1 extending beyond peduncle of antenna 2 6 



5. Antenna 1 as short as peduncle of antenna 2 8 



6. Article 5 of pereopod 3 with long posterior lobe, coxae 



2-4 shorter than coxa 1 antarctica 



6. Article 5 of pereopod 3 lacking posterior lobe, coxae 



2-4 as long as coxa 1 7 



7. Antenna 1 scarcely exceeding peduncle of antenna 2, 

 rami of uropod 3 multiserrate on facing 



edges tannerensis, n. sp. (in part) 



7. Antenna 1 nearly as long as antenna 2, uropod 3 with 



one serration on medial edge of outer ramus crassicornis 



8. Antenna 2 longer than body barbarensis 



8. Antenna 2 shorter than body 9 



9. Antenna 1 extending slightly beyond end of peduncle 



of antenna 2 tannerensis, n. sp. (in part) 



9. Antenna 1 scarcely exceeding article 4 of 



antenna 2 mintiticornis 



10. Ventral pair of corneal lenses situated beneath lateral 

 cephalic margin, not visible laterally, head bearing 

 distinct rostrum nearly half as long as article 1 

 of antenna 1 securiger^ 



10. Ventral pair of corneal lenses situated on lateral 



cephalic surface, rostrum absent or very short 11 



1 1. Article 5 of pereopod 2 four times as long as 



article 5 of pereopod 1 lepta 



11. Article 5 of pereopods 1 and 2 subequal in length 12 



12. Cleft of telson one fifth or less 13 



12. Cleft of telson one third or more 14 



13. Article 5 of antenna 2 shorter than article 4, article 6 



of pereopods 1 and 2 much longer than article 5 gaimardi 



13. Article 5 of antenna 2 equal to article 4, article 6 

 of pereopods 1 and 2 not much longer than article 



5 longicornis 



14. Antenna 1 exceeding peduncle of antenna 2 by a 



length equal to article 5 of antenna 2, or less 15 



''finploops securi(jrr K. H. Barnard (see 1932) is removed to Byblis because 

 article 2 of pereopod 5 is distally broadened. 



