Chilton. ^0/i Nctv Zealand Squilli<la\ (jo 



woi'ks on New Zealand Crastaeea, I give liere Brooks's dia- 

 gnosis of it. 



Lysiosquilla, Dana. 



Generic Description. — •' Stomatopoda with the 6th abdo- 

 minal somite separated from the telson by a movable joint ; 

 the hind body depressed, loosely articulated and wide ; the 

 dactyli of the raptorial claw wirhout a basal enlargement, but 

 with more than 6 marginal spines ; no more than 4 secondary 

 spines, and often only 1 between the intermediate and sub- 

 median spines of the telson, which is usually wider than long, 

 and the outer spine of the ventral prolongation from the basal 

 joint of the uropod usually longer than tlie inner. The larva 

 is an Ericlithns or SqnillericJithus w"ith the ocular and anten- 

 nulary somites covered by the carapace ; the lateral edges of 

 the deep carapace folded inwards over tlie veiitral surface ; 

 the bases of the postero-lateral spines distant from the dorsal 

 middle line ; the hind body flat and wide ; the telson w'ider 

 than long, with a few spines, or only 1, between the inter- 

 mediate and submedian spines, and the dactylus of the rap- 

 torial claw with numerous marginal spines." — [Bkooks.] 



To this he afterwards adds: "The terminal joint of the 

 exopodite of the 1st abdominal appendage of the adult male 

 is subtriangular, wath its large outer lobe separated by a suture 

 from the very small inner lobe, and the fixed limb of the petasma 

 very small and not ending in a hook." 



Lysiosquilla spinosa, Wood- Mason. 



Specific Diagnosis. — Whole dorsal surface quite smooth. 

 Carapace with rostrum making up slightly more than one- 

 fifth of th(. '■otal length from tip of rostrum to the end of the 

 telson. Eyes nearly cylindrical, corner somewhat expanded 

 and wider than the peduncles. Eostrum triangular, sides 

 slightly arched, acute in front. Eaptorial claw usually with 

 12 spines on dactylos ; inner edge of the propodos narrow and 

 finely pectinated, with 3 stout movable spines and a few fine 

 hairs near the base. Second thoracic segment produced on 

 each side into a thin rounded projection compressed longitudi- 

 nally so that when viewed from above it looks like a sharp spine ; 

 3rd, 4th, and 5th thoracic segments rounded at the sides. Ap- 

 pendages of the pereiopods ovate, that of the 4th the largest, 

 that of the 5th narrower than the others. Abdomen widening 

 slightly posteriorly, 6th segment having the postero-lateral 

 angles produced into sharp spines. Telson with the posterior 

 margin semicircular, upper surface with a median and two 

 submedian ridges ending posteriorly in sharp spines just above 

 the level of the marginal spines ; lateral portion of telson flat, 

 expanded, ending posteriorly in the lateral spines; usually 1 



