270 
PACIFIC SCIENCE, Vol. XXI, April 1967 
Fig. 4. Lucifer chacei, female, thelycum: a, ventral, b, lateral. A, P, Anterior and posterior margins of 
ventral process; P3, base of 3rd pereopod; SP, spermatophore ; ATR, atrium; SEM. REC., seminal receptacle. 
distribution of L. chacei : east indies: 
many localities (Hansen, 1919). Hawaiian is- 
lands: Oahu, Molokai (Hiatt, 1947). line is- 
lands: Fanning Island (Edmondson, 1923). 
tuamotu islands: Tikahau Atoll, society is- 
lands: Tahiti (Papeete Harbor) ; Moorea 
(Paopao Bay) ; Bora Bora (south of Farepiti 
Pt., olf Tereia Pt., west of Toopua I.), mar- 
shall islands: Rongelap Atoll (off Yugui 
I.); Eniwetok Atoll (west of Parry I.). It is 
probably widespread in the tropical Pacific, and, 
like its Atlantic counterpart, L. faxoni , is prob- 
ably a coastal species. Along the east coast of 
Australia it is replaced by L. penicillifer Han- 
sen (Gordon, 1956). 
reproduction: I have examined the female 
TABLE 1 
Diagnostic Features of L. chacei Compared with L. faxoni 
Lucifer faxoni borradaile 
Lucifer chacei, new species 
1. Last segment of peduncle of ant. 2 in $ reaches 1. 
beyond eye and nearly to distal margin of 1st 
segment of ant. 1 peduncle, in $ reaches beyond 
middle of cornea and to distal third of 1st seg- 
ment of ant. 1 peduncle. 
2. Rostrum reaches proximal border of statocyst. 
3. Ventral cushion of $ telson much broader than 
its posterior height. 
4. Sheath of petasma curved. 
Last segment of peduncle of ant. 2 in S reaches 
middle of cornea and distal third of 1st segment 
of ant. 1 peduncle, in $ reaches proximal margin 
of cornea and to distal third of 1st segment of 
ant. 1 peduncle. 
2. Rostrum reaches almost to distal end of statocyst. 
1 
3. Ventral cushion of $ telson about as broad as its 
posterior height. 
4. Sheath of petasma straight. 
