GONODACTYLUS — MANNING 



15 



Discussion. — 67. spinosus most closely resembles 67. lanchesteri, 

 described above, but differs in having a narrower telson, with poorly 

 developed intermediate marginal teeth, and in having many more, 

 smaller dorsal tubercles on the carinae of the telson. In 67. spinosus 

 the intermediate denticles are set at or behind the apex of the inter- 

 mediate tooth, whereas in 67. lanchesteri they are recessed anteriorly. 

 The basic telson shape in G. spinosus is similar to that found in 67. 



Figure 5. — Gonodactylus spinosus Bigelow, female lectotype, TL 21.0, Mauritius: a, last 

 abdominal somite, telson, and uropod; b, submedian teeth of telson, ventral view; c, 

 uropod, ventral view; d, rostral plate. 



espinosus (see below), but that species differs in several features, 

 the most important of which is the lack of dorsal spinules on the 

 telson. 



The larger of Bigelow's syn types, a female, TL 21.0, from Mau- 

 ritius, is here selected as the lectotype; the other syn type, a female, 

 TL 20.5, from the same locality, becomes a paralectotype. Both 

 specimens are in the U.S. National Museum. 



