138 



Tia/isactioiii 



were large, triangular, and with the corneal axis oblique, while the carinae 

 on the carapace agree precisely with the description and figure given by 

 Bigelow, and in themselves are sufficient to show that the specimen belongs 

 to S. affinis and not to S. nepa. The specimen also agrees with his descrip- 

 tion in all the other characters that can be still seen. Unfortunately, the 

 exact locality of this specimen is not known. 



The species S. affinis is known from various localities in Japan and also 

 from Hong Kong, and its occurrence in New Zealand indicates a distribu- 

 tion similar to that of numerous other marine Crustacea. 



The species is described by Bigelow as follows : "A Squilla with large 

 triangular eyes, the corneal axis being oblique and as long as or usually 

 longer than the peduncular one and 0-05 times the length of the body ; 

 the outer margin of the dactylus of the raptorial claw not sinuate or only 

 slightly so ; 6 teeth on the dactylus ; the rostrum slightly truncated, and 

 supplied with marginal carinae and a median tubercle ; 5 carinae on the 

 carapace, the median one not bifurcated for more than one-fourth its length, 

 and the lateral ones continued into the anterior lateral spines, which do 

 not reach as far forward as the suture between the rostrum and carapace, 

 the posterior lateral angles evenly rounded ; no ventral spine on the first 

 exposed thoracic segment, its lateral processes and those of the next two 

 segments bilobed as in S. nepa ; submedian carinae present on all except 

 the first segments of the hind-body ; crest, keel, and symmetrical Unes 

 of pits on the telson and 6 marginal spines, 8 basal carinae, and between 

 the former 4 to 5 submedian, 7 to 9 intermediate, and 1 lateral denticle."' 



I give a figure representing the telson. (See fig. 3.) 



Genus Lysiosquilla Dana. 



** Stomatopoda having the 6th abdominal segment separated from the 

 telson by a movable joint ; the hind-body depressed, loosely articulated. 



I'^IG. 4. — Lf/.yiof<'/uiII(i ■sjiiiw.'ia : 'I'elson and uropod.- 



and wide ; the dactylus of the raptorial claw without a basal enlargement, 

 but with not less than 5 niarjiinal teeth ; no more than 4 denticles, and often 



