DECAPOD CRUSTACEANS OF THE WEST INDIES 147 



Domiiiica Stations: 1-5, 7-9, 11, 19, 20, 23, 25, 29, 32, 34, 39-48, 

 53-55, 58-60, 66, 70, 73, 75, 77, 78, 85, 87, 90-92, 95, 105, 106, 109, 

 117-127, 130 (0-2,850 ft.). 



Remarks. — Comparison of material available to us from Dominica 

 and Martinique, including a male from the type-series of Pseudo- 

 telphusa tenuipes from Dominica and a female from the type-series of 

 Telphusa dentata from Martuiique, discloses no differences between 

 the two populations. Pretzmann has uiformed us that the male 

 holotype of P. tenuipes in the British Museum has pleopods different 

 from those of Martinique specimens, which led him to assign that 

 species to the subgenus Neopseudothelphusa of Giiinotia, but he sug- 

 gested that an error of documentation might be involved. On the basis 

 of the evidence available to us, it would appear that Guinotia dentata 

 is the only pseudothelphusid on Dommica. 



The series of this species collected durmg the Dominican Survey 

 displays a rather remarkable uniformity m the proportions of the 

 carapace (fig. 41). Although the carapace is slightly narrower in 

 juvenUe specimens (average length 0.64 of average width) than 

 it is m large adults (average length 0.60 of average width), there 

 seems to be a very regular transition from the juvenile proportions to 

 those of the adults. Even recently hatched young, still held in the 

 brood pouch formed by the abdomen of the mother, have the carapace 

 of similar proportions, although of rather different form. In the pre- 

 sumably first mstar, the carapace is about 3.2 mm long and it is 

 considerably swollen and apparently foreshortened by contauied yolk 

 material; it resembles the carapace of the true land crabs, such as 

 Cardisoma, but the front is so produced that it compensates for the 

 reduction in postfrontal length. The numbers of immatiu"e with 

 carapace lengths of 13-14, 16-17, and 19-21 mm suggests that these 

 sizes may represent common mstar intervals. 



Females with eggs were taken in January and February, and those 

 with young were found in February, October, and November. Inas- 

 much as most large adult specimens were collected m those four 

 months, there is no satisfactory evidence for or agamst the existence 

 of a restricted breedmg season ui this species, nor is there any evidence 

 of monthly size classes, which might indicate such a breeding season. 

 One female with a carapace length of 44.1 mm carried 152 eggs; 

 another, 55.5 mm long, had the same number of eggs; and a third of 

 51.8 mm harbored 202 young. 



50. Guinotia (Guinotia) garmani garmani (Ratlabim) 



Figure 43d 



Pseudothelphusa garmani Rathbun, 1898 [part], p. 522, figs. 14a, b, f, g [type- 

 locality: Trinidad]; 1905, p. 298, fig. 91. 



