N... 1059. AMEltWAN iil*EVlEtA OF HYNALPHEVH—VOUTlEltE. 5][ 



0.7 (a little narrower therefore than in S. minus). The meropodite 

 is similar in the two species (proportion 2.5). 



In the second pair the proportion of the length to the width of 

 the carpns is about 12: 1 ; furthermore, the meropodite is O.8.") of the 

 length of the carpus. 



The proportions of the feet of the third pair are the same as in S. 

 minus save for the meropodites, in which the proportion between 

 the length and the Avidtli reaches 4.25. 



The length of the telson reaches from LOG to 1.15 times its large 

 ba.se, always more than twice (2.05 to 2.23 times) its small base, the 

 article being visibly narroAver than in S. minus. 



Fig. 29. — SYXALPHErs BREViCAEPrs. a, frontal and antennal eeoion ; c, careocerite ; 

 c, egg: K, large chela; k, small cheliped op first pair, male; k', small cheliped 



OF FIRST PAIR, MALE, S. MINUS (FOR COMPARISON) ; I, FOOT OF SECOND PAIR; m, FOOT 

 OF THIRD PAIR ; m' , DACTYL OF THIRD PAIR ; t, TELSON ; t', TELSON, S. MINUS (FOR COM- 

 ■ PARI SON). 



The eggs are of large size and give rise to mysis larvai provided 

 with all their appendages, comprising the chelipeds of the first pair, 

 which are already very unequal, and those of the second pair, in 

 which the carpus is already segmented. 

 . The size may reach m or even 38 mm. (female). 



There occurs a remarkable variety of this species represented by 

 some specimens from Key West and also from Porto Rico {guerini). 

 The frontal teeth are long, especially the rostrum, which last slightly 

 surpasses the lateral teeth and is also wider at the ba.se; the margins 

 are .strongly concave outside in.stead of l)eing straight, as. in typical 

 specimens; the basicerite of the antenna is a little more spinous 



