Copepods in Southeastern Pacific — Grice and Hulsemann 
327 
voort, and E. venusta Giesbrecht in the absence 
of a crest, the number of spines on the first 
basipodal segment of the fourth foot, and the 
number of setae on the lobes of the terminal 
segment of the endopod of the second antenna. 
E. speciosa is distinguished from these three 
species by the presence of 2 swellings on the left 
side and the nearly straight right side of the 
genital segment when seen in dorsal view. 
Gaetanus hrachyurus Sars, 1907 
Remarks: The first basipodal segment of 
the maxilliped carries a lamella on its external 
side as is the case in many species of Gaidius. 
Such a lamella is also present in three females 
of Gaetanus hrachyurus found by us previously 
in the Indian Ocean (Grice and Hulsemann, 
1967). This lamella is not mentioned in the 
description of the species by Sars (1907, 1925). 
Gaidius inermis (Sars, 1905) 
synonymy: Gaetanus inermis Sars, 1905, 
p. 12; Sars, 1925, p. 64, pi. 19, figs. 3-5; Rose, 
1929, p. 19; Wilson, 1950, p. 231. 
remarks: According to Vervoort’s (1952^, 
1952 b) revised definitions of Gaidius and 
Gaetanus, the species described by Sars as 
Gaetanus inermis is transferred to the genus 
Gaidius. 
Single females of Gaidius inermis were 
reported from the northeastern Atlantic (Sars, 
1925; Rose, 1929) and one female, which was 
identified by Sars (Wilson, 1950), from off 
Peru. The male is still unknown. 
Pseudochirella limata n. sp. 
Figs. 20-25 
occurrence: Station 27, 1 female. 
diagnosis: Female. Body elongate, dilated in 
the oral region. Anterior portion of head 
slightly obtuse in dorsal view. Strong 1 -pointed 
rostrum directed downward and slightly back- 
ward. Head and first thoracic segment separated 
by fine line, fourth and fifth thoracic segments 
separate. Posterior margin of fifth thoracic seg- 
ment produced covering half the genital seg- 
ment. Left side of fifth thoracic segment with 
minute spine. Abdomen consisting of 4 segments. 
Genital segment smooth, only little protruded 
ventrally. In dorsal view nearly symmetrical, 
right side slightly swollen near distal margin. 
Widest part proximally, behind which is ab- 
ruptly narrowed portion. Patch of hair on ven- 
tral side of anal segment, also on inner margins 
of furca. Flat, rounded teeth dorsally on distal 
margin of second and third abdominal segments. 
First antenna consisting of 23 free segments, 
segments 8 and 9, and 24 and 25 fused. First 
antenna reaching end of furca. Endopod of 
second antenna two-thirds length of exopod. 
Exopod consisting of 7 segments. Outer lobe 
of terminal segment of endopod with 6 large 
and 1 small setae, inner lobe with 6 large and 
3 small setae. Endopod of first swimming foot 
1 -segmented, exopod 3-segmented, segments 2 
and 3 incompletely separated. Endopod of 
second foot 2-segmented, exopod 3-segmented. 
Posterior side of first basipodal segment of 
fourth pair of swimming feet equipped with 
row of 16 spines, decreasing in size toward inner 
side. Total length 7.33 mm. Holotype: usnm 
120528. 
remarks: Pseudochirella limata shows rela- 
tionship to P. lohata (Sars), but in the latter 
species the fifth thoracic segment is more pro- 
truded and does not carry a spine, and the 
genital segment is widened distally instead of 
proximally. 
Pseudochirella tuherosa n. sp. 
Figs. 26-33 
occurrence: Station 3, 2 females; station 
10, 1 female; station 20, 1 female; station 40, 3 
females; station 41, 2 females; station 54, 2 
females; station 59, 4 females. 
diagnosis: Female. Head and first thoracic 
segment incompletely fused. Fifth thoracic seg- 
Figs. 14-19. Euchirella speciosa n. sp., female. 14, Dorsal view; 13, anterior end of head, lateral view; 
16, fourth and fifth thoracic segments, left lateral view; 17, fourth and fifth thoracic segments, right lateral 
view; 18, second antenna; 19, first basipodal segment of fourth foot. 
Figs. 20-25. Pseudochirella limata n. sp., female. 20, Fifth thoracic segment and genital segment, dorsal 
view; 21, anterior end of head, dorsal view; 22, anterior end of head, lateral view; 23, fifth thoracic seg- 
ment and abdomen, right lateral view; 24, fifth thoracic segment and genital segment, left lateral view; 23, 
basipodal segments of fourth foot. 
