119 



c" Coalesced portioii of shortcr ramiis of oiiter anten- 

 imlar fiagelluiii usiuiUy distinctly longer than the free 

 portion, 



Squilla (Tjiniié), var. (>/efj(()i!> (Rathke). 

 Mandibular palp tlirec-joiiitcd. Fingers of 2^1 legs measuring 

 more than two-thirds the leiigth of the palm, sometimes even 

 longer than it. 



// Carpus of 2^ legs little shorter than chela, measnring more 

 than two-thirds of it. ') 



c' Shorter ramus of outer antennular llagellum measnring 

 more than two-thirds the length of antennular peduncle. ^) 

 Second tootli of tlie upper margin of the rostrum situated 

 either immediately before the orbital margin or over it 

 or just behind it, teeth of the upper margin not pro- 

 minent. 



(V Upper margin of rostrum usually armed with 5 teeth, 

 lower margin with 4. •^) The rostrum reaches, espe- 

 eially in young and middh^-sized specimens, sometimes 

 also in adult individuals, more or less far beyomi 

 the middle of shorter ramus of outer antennular 11a- 

 gollum (the coalesced portion included). 

 adspersus (Rathke) Typical form. ') 

 d" Upper margin of rostrum usually armed with 6, lower 

 with 3 teeth. ^) Shorter ramus of outer antennular Hagel- 

 lum usually reaching by more than half its length, the 

 coalesced portion included, beyond apex of rostrum. 

 adspersus (Rathke), var. Fahricii (Rathke). 

 c^' Shorter ramus of outer antennular Hagellum measuring 



1) Except sometimes iu youDg male specimens of Leander longirostris (H. M. -Edw.). 

 Vide p. 163. 



2) In the Meditenauean form of L. longirostris (H. M.-Euw.) the shorter ramus 

 seems to be longer than two-thirds the peduncle (Confer p. 164). 



3) Not counting the apical tooth near apex of rostrum. 



4) These characters of the typical form are taken from a rather small number 

 (22) of specimens: the examination of a larger number from the Black Sea appears 

 therefore desiiable, in order lo ascertain whether these characters are indeed constant. 



