FISHERY BULLETIN: VOL. 79, NO. 3 



Table 2.— Continued. 



'Kurata, H. 1970. Studies on the life histories of decapod Crustacea of Georgia. 

 ^Character unchanged from first zoea. 

 ^Character unchanged from second zoea. 

 "Character unchanged from third zoea. 



Unpubl. rep., 274 p. Univ. Georgia Ivlar. Inst., Sapelo Island. 



nodifrons); minute or Type C {Neopanope sayi, N. 

 texana, N. packardii, Panopeus herbstii, 

 Eurypanopeus depressus, Hexapanopeus angusti- 

 frons, Rhithropanopeus harrisii, Pseudomedaeus 

 agassizii, Eurytium limosum). The antennal 

 exopodite of Micropanope sculptipes (Type E) is 

 thus distinctive from other xanthid larvae both in 

 its length relative to the protopodite length, and in 

 armature. Although the antenna of P. agassizii 

 closely resembles that of M. sculptipes, the pro- 

 topodite is less spinous and the exopodite is one- 

 tenth the protopodite length with two apical setae. 

 The anterodorsal carapace (anterior half of the 

 dorsal carapace surface) setae of M. sculptipes 

 zoeae first appear in the second stage (2), and 

 number 10 and 14 in the third and fourth stages, 

 respectively. Anterodorsal carapace setae are not 

 described for most of the other xanthid species; one 

 seta is illustrated in the fourth stage of Pilumnus 

 dasypodus, and Menippe nodifrons develops 4 

 setae during its second and third stages and 8 

 setae in its fourth stage. These setae are present in 



502 



stage II zoeae of Micropanope barbadensis (1-2), 

 stage III (4), and stage IV (12-14). 



Micropanope sculptipes zoeae have abdominal 

 spination characteristics which consist of lateral 

 hooks on the second and third abdominal somites, 

 and smooth posterolateral spines on the third 

 through fifth abdominal somites. The posterolat- 

 eral spines increase in length with each succeed- 

 ing zoeal stage. This pattern of abdominal spina- 

 tion is similar to that observed for most other 

 xanthid species, but some species vary. 

 Hexapanopeus angustifrons does not possess pos- 

 terolateral spines in the first stage, but develops 

 them in subsequent stages in a manner similar to 

 M. sculptipes. Rhithropanopeus harrisii possesses 

 lateral hooks only on the second somite and con- 

 spicuously long posterolateral spines on the fourth 

 and fifth somites. Pilumnus sayi has serrated 

 posterodorsal margins and lateral hooks on the 

 second through fifth somites, andP. dasypodus has 

 serrated posterodorsal margins on the third 

 through fifth somites and lateral hooks on the 



