286 Occasioini! f'af^crs Bcniicc I'. Bishop Mtisciini 



SQL'IIJJDAIC 



There are, at llic present time, six reeoq'iiized ijenera of the 

 S(|iiilH(lae. all tif whieh are represented in llie llishop .Mnsenm 

 eolleetion l)y one or more si:)ecies. 



The following- key, presenting" the distingnishing eharacteris- 

 ties of the genera, is one formulated by Kem])\ 



T. Articulalitm hctwccn iiktus and iscliiuiii of raptorial claw terminal 

 (normal) ; mcrus grooved inferiorly for reception of propodus through- 

 out its length ; propodus llneh- pectinate or with a series of fixed spines 

 along outer edge of dorsal surface; dactylus rarely inflated at base. 



A. Carapace with well-marked carinae ; cervical groove defined across 



dorsum of carapace; first five abdominal somites with longitudinal 

 carinae (raptorial dactylus not inflated at base) Squilla, p. 287 



B. Carapace wilhoin carinae; cer\ical groove not extending across 



dorsum of carapace; hrst live alKlominal somites witlimit longi- 

 tudinal carinae". 



1. Abdomen usually compressed; raptorial dactylus not inflated 



at base w'itli two. rarely three, teeth on inner margin,' 

 or unarmed ; telson with sharp median carina and ( in 



adults) with other carinae on either side 



Pseudosquilla, p. 288 



2. Abdomen depressed; raptorial dactylus not inflated at base 



with at least four teeth on inner margin ; telson without 

 median carina, often smooth or with a transverse circlet of 

 spines Lysiosquilla, p. 292 



3. Abdomen depressed ; raptorial dactylus with three teeth on 



inner margin ; telson closely studded with fine spineules or 

 large tubercles, with or without a pair of submedian carinae 

 Coronida, p. 295 



II. Ischio-meral articulation of raptorial claw situated at a point anterior 

 to proximal end of merus, which consequentlj' extends backward con- 

 siderably beyond the joint ; ventral surface of mcrus grooved and hol- 

 lowed for reception of propodus for not more than three-quarters its 

 length ; dactylus inflated at base. 



A. Dactylus of raptorial claw with teeth on its inner margin 



Odontodactylus, p. 297 



B. Dactylus of raptorial claw without teeth on its inner margin 



Gonodactylus, p. 299 



■'Kemp, S., Crustacea Stomatopoda of the Indo-Pacific Region: ]\Iem. 

 Indian Mus., vol. 4, p. 16, 1913. 



" See Kemp's exception and reference in his footnote Xo. i. 

 ' Kemp excludes tlie terminal tootli. v^ee his footnote Xo. 2. 



